If you’re not getting fuel to the squeeze balls, I’d look at the pickup tube in the tank. Boats.net carries thousands of OEM fuel system parts. . I’m a little confused about what you have done so far. Gotta be between the tank and the engine, then. . Just bypassed an inline filter not required by Mercury. Any helpful tips? The pickup on the tank is clear also. I think I will start my first thread. But dies off at full throttle. Realizing I need a general plan to look forward to was a change for me. The last chronic "air leak" I hunted down turned out not to be an air leak at all but loose fuel tank scale clogging the screened pickup pipe deep in the tank. Some leaks … I just came by some very small firehose (quite a lot of it) and was wondering what all it could be used for… now it will cover my automotive fuel line that I’m going to change to asap. If attempts to turn down the idle speed adjusting screw have failed (old-make carburetor), it means the blend of air to fuel ratio has changed in favor of too much air passing into the intake manifold. Im pretty sure i have an air leak in my fuel line on my 70 hp johnson. Line from tank to motor (90hp mercury) completely clogged with this yellow/green grainy stuff. Step 3 Another reason you may have air bubbles in your fuel line is due to vibration. Replaced with an overpriced Atwood “Kit” with no ends (how stupid is that) but problem solved, for now. Runs fine at 3/4 speed. Use “303” (or Armor-All, Son-of-a-Gun or equivalent) on the primer bulb as well for a longer service life since it’s actually vinyl, p.v.c. Defective engine compartment ventilation, or clogged air filters, can therefore result in a loss of power. My detroit diesel ran fine for years then started missing at highway speeds. If any of my engines “drank” fuel that fast I would despair of the whole thing! A leaky fuel line will produce either drips, or in more serious cases puddles of fuel underneath the vehicle. Listen for unusually air sucking sounds as you squeeze. In fact it's very common for air leaking engines to start and idle very nicely. In order to run properly, diesels need huge amounts of ambient Any air in the system needs to be vented (bled) before the engine will operate properly. New hoses have an impermeable liner to keep ethanol from degrading the other hose material. The symptom could be surging. Guide to Storing Food without Refrigeration, " data-id="twitter" class="ss-twitter-color" data-ss-ss-network-id="twitter" data-ss-ss-post-id="18781" data-ss-ss-location="popup" data-ss-ss-permalink="https://theboatgalley.com/outboard-fuel-line-problems/" data-ss-ss-type="share" data-has-api="true" rel="nofollow">. Thanks. 1. needle and seat are worn out 2. needle and seat are obstructed with foreign material 3. carb float becomes saturated with fuel or is cracked and fills up with fuel 4. A quick Google search shows these fuel lines were made in response to the ethanol mandate in 2005, and have been on the market since at least 2007. Save yourselves the headache. Usually a bad or failing fuel return hose will display a few symptoms that can alert the driver of an issue. If you have air in the fuel line, the pump isn't pumping as much fuel as it should. IDO » Community » Forums » Fishing Forums » General Discussion Forum » Outboard fuel problems. My 30 foot Bolger uses an outboard too. No wonder fuel couldn’t get through! You have to go over the entire fuel system from tank pickup to injectors. If the vacuum that draws the air into the motor and then as the air goes through the carburetor the fuel gets added in the correct proportion and the motor runs nicely, when everything is working well. Air in the fuel system is another possible trouble that may prevent an engine from starting. Once you have removed the tubing, clean it well and place it in a clear container filled with water. E-bay has several vendors. I finally got it started and took off, got about 400yd away from the dock, stopped to get something in the boat and the motor died. It is possible to have a vacuum leak that lets air into the fuel supply while fuel is not spraying out from the fuel system. If I run the truck they flush away into the system and I see only an occasional fine bubble in the fuel flow at idle. 1 – Automotive fuel hose is NOT approved by the USCG. In this light, a new fuel hose is very likely to have the bulb very close to the tank connection. When loosening the mounting screws, be very careful to only remove 1 at a time, and remember to tighten them all back into place. I’m going to make an automotive line and keep another line as backup. The same goes for the barbs that attach the fitting and the fuel line, and/or the hose clamps that secure them. Just replaced fuel pump and all fuel lines. Click here. There is basically no sure-fire method to avoid problems either with the liner or UV damage. The outer layer of yacht braid makes good protection, as noted earlier. Pinhole leaks in the low-pressure lines from the tank to the pump can cause this - the pump sucks in air through the hole instead of fuel from the tank. … If you want to keep enjoying the delight of the open road, you'll need to know how to diagnose or fix a few things, or know a great mechanic. All the more reason for a spare. For the record, this hose was made by Attwood and is not quite 18 months old. Keep your fuel lines free of air to help keep your car running smoothly. Automotive fuel hoses are made to withstand bursting from internal pressure, but they eventually collapse under vacuum conditions. Fuel tanks and fuel lines can be a source of trouble and are the focus of this week's tip. I own a 1995 seaswirl stripper i am not getting any fuel to both squeeze balls changed the anti syphon valve and changed out the water separator still no gas coming to the motors any suggestions also changed both fuel balls and lines at motor. I didn’t know what it was at the time I thought it was some kind of gluey nasty buildup. Quick fix: put some grease on the end fittings at the tank and motor. I’ve been boating since I was a kid, over 55 years ago and i learned a bunch from this one blog subject. Or actually, at least two blockages. There are several reasons, but these are the biggest of them. Either the lift pump has failed, the boat is out of fuel or there is an air leak or blockage somewhere in the fuel lines running fuel from the tank to the engine. Nice thread, thanks! When I primed the line there were bubbles visible in the line. [More] Forced Flexibility, Are you a new cruiser having trouble sleeping? Vapour has two main causes. Store … July 16, 2006 at 9:31 pm #1250819. An increased and steady idle speed can be one of the best warning symptoms for detecting a carburetor air leak. I have been fighting a similar problem. protected. How about pool noodles (and zip ties) to cover the line? This ratio means that there is too much air in your engine, and as a result, the engine will run poorly or not at all. and so on, eventually dying. You can consult your automotive manual, or get the assistance of someone who is mechanically savvy if you are not. The hydrophilic properties of ethanol (any alcohol) draws water right out of the water that builds up in the bottom of the tank and contributes to corrosion of the jets and other parts of the carb. Dave, my husband, began by trying to blow through the old hose. I forgot: Thermoid hose is (relatively) cheap @ $17.00 for 25 feet (with free shipping). The first cut end of hose that I looked at didn’t seem to have a problem: But the second one looked a little funny: It looked like the inside of the hose had melted and twisted. Consider an air leak in the fuel line on the input side of the pump, or as d.boat says, in the incoming oil line (or cap). If you suspect that your vehicle has a vacuum leak, read on to learn the most common symptoms, as well as how to fix them. and learned a ton about what does and doesn't work! My exact same experience with “crap-wood” hoses! Ethanol rotted the fuel lines on my truck in 3 years. Another reason you may have air bubbles in your fuel line is due to vibration. If you see bubbles there are holes, and you will need to replace the tubing with new tubing. If the leak is bad enough at idle, the fuel in the line could bleed back into the tank causing the pump to lose it's prime. [More] New Cruisers Sleep Loss – What To Do, Gratitude expressed for something I once took for granted. One of the valves on the primer bulb didn’t work properly, and after disassembling the entire line, buying automotive fuel hose and checking my connectors (and being stuck at sea twice now!) and inexpensive. I would suggest placing the non-uv treated hose within one of those split wire looms that are flexible plastic and split lengthwise. I’VE STARTED CRUISING AND I’M FRUSTRATED AND OVERWHELMED, living on a boat • cooking & food • gear I was curious about what had happened – both basic curiosity and wanting not to have continued problems. They had at least one recall of hoses due to delamination of the inner liner causing blockages. Symptoms caused by leaking REGULATOR DIAPHRAGMS point to: Bad Injectors Bad Fuel Pumps Leaking VST Air in Fuel Lines Bad Gas Bad TPS New rubber DIAPHRAGMS from OptiMaxFuelRailRepair.com will cure and correct these symptoms. I run sea foam on a regular basis also. If so what should I use? • Tips from Carolyn Some of those little pieces can end up clogging jets leading to carb rebuilds. . The Resource Center has four FREE mini-courses to guide you to just the info you need, whether you’re discovering what living on a boat would be like, preparing to cruise, overwhelmed with the first-year learning curve, or needing help with cooking aboard. Fuel pump inlet clogged at “in” and 50%+ inside pump. Here are a few ways to remove air from a fuel line, a truly problematic experience. The last chronic "air leak" I hunted down turned out not to be an air leak at all but loose fuel tank scale clogging the screened pickup pipe deep in the tank. These leaks must be eliminated immediately because of potential fire hazard. If I let the truck sit overnight it forms two big bubbles before and after the filter housing. Sounds like algae that has grown in water mixed with fuel. Funny, I think of ethanol as a “new” problem. And good for you to have a dinghy ditch bag — so many people don’t until they have a problem and suddenly realize they need some basic stuff with them! Take my free mini-course: Filed Under: Boat Work Tagged With: Boat Maintenance, Boat Projects - Repairs & Upgrades, DIY Tips, Overcoming. In talking with clerks at the local NAPA store, West Marine, other cruisers and outboard mechanics, it seems that we are not alone in our outboard fuel line problems. Check to make sure there aren't pinholes in your fuel tubing. If that doesn’t do it off to the mechanic it goes. A leaky fuel line will produce either drips, or in more serious cases puddles of fuel underneath the vehicle. If any of the hoses break down, dry up, or wear out enough they will leak fuel. Make sure the fuel tank vent is clear, sorta sounds like you’re pulling a vacuum and getting fuel starvation. Automotive fuel hose doesn’t seem to be having the delamination problem but doesn’t have the UV inhibitors and may crack from UV damage. I recommend looking for: - loose, broken or missing clamp on a fuel line filling - cracked fuel hose - cracked fuel fitting - loose screw-on fuel filter element/cup (if you have such a thing. Somewhere between the engine and the fuel tank. Only several entries above mention the possibility of a clogged or closed fuel tank vent, which would seem to be indicated by my own problem with a 2006 Hurricane boat with 150 HP 4-stroke Honda outboard, I say this because my problem is always an easy start, then good operation at full throttle for a predictable amount of time … and then a stall requiring a re-priming using the bulb. American Honda Motor Company is recalling several outboard motors for boats, saying fuel overflows from the vapor separator air vent tube.Honda issued the recall Thursday.They said a … Big Sky Country Helena, MT (Adel, IA home) Posts: 1,160. The change could be as noticeable as … a a season or two tops, like there Stanley tools. Could you use more help in making the transition to living aboard? Have a 40hp Johnson starts fine but bogs down when giving it throttle! We’re still working on that. Air can be sucked in past the the clamps or crimps on the fuel hoses. It also kinked easier, which led to the engine dying at the most inopportune times, making a bad situation even worse. Your email address will not be published. ... test the line for leaks and be certain no restrictions exist. With time, all of these connections tend to start leaking or allow air to get sucked in. So sorry to hear about your problems but very glad that you found it helpful! When an air leak occurs, it often puzzles users and even some saw shop technicians because the symptoms of an air leak are varied. It put me on the right track and I believe I’ve solved my problem. Periodically it doesn’t want to accelerate, like there is a fuel restriction or possibly an air leak in the line. Thanks in advance! This leans out the fuel mixture which raises the engine speed. Don't Pay for NEW FUEL RAILS at OEM Prices! The amount of air needed is easy to under estimate – around one cubic metre per minute is required for every 10hp of engine power. I have put sea foam treatment in the tank hoping it will do something for it. Phase separation leaves globs of ethanol in the fuel that the engine cannot run on. Check the condition of all the fuel lines, and the connections between rubber flexis and solid lines. Misdiagnosis often causes unnecessary service costs and part replacement. Bad fitting connections and damaged flexible hoses being the most common. An easy fix to this is to insulate your mounting screws with fuel tubing. Be careful, liner causes issues. Pool noodles deteriorate fast, shedding plastic to the sea. Symptoms include: over reving, overheating, stalling on acceleration, failure to idle, and worst of all, an engine seizure if the problem is neglected. Bottom line, however: carry replacement fuel hose and hose clamps! It is suggested that you have your leaking fuel injector sent to Injector RX for testing and cleaning. Then we can hook up to a portable tank and boat run fine at WOT. 1. Also, low engine use tends to dry out the Diaphrams. ... you have blockage somewhere in the fuel line from the bulb to the fuiel ... July 17, 2006 at 11:47 am #460982. This happens over and over again, because many quick-disconnect fittings that attach the fuel line to the outboard are just plain cheap. Quite possibly insufficient fuel to run the motor. Generally, for an engine that size, it’s either 1/4″ or 5/16″, I have problem bulb starts to pump up then goes flat and will not expand.I replaced bulb new hose and both ends but problem persist any help . Test leaking Fuel Injectors.. Fuel injector leak testing should be done under operating pressure. Fix of a Yamaha no start, hard start, caused by bad fuel connector and bad hose. If any of the hoses break down, dry up, or wear out enough they will leak fuel. The engine would run fine, then lose RPMs . This is a great blog. Have any bugs gotten into the vent to stop it up? If air gets into the fuel system then the lift pump is pumping fuel and air to the VST. Thanks so much. Check all fuel line connections and hose clamps. The number one problem with squeeze … But like any other type of filter, it will eventually clog up with the materials it is filtering out. Lesson – PERIODICALLY check your hoses (and avoid Sears outboards – not really an issue anymore!). The average DIY fuel injector cleaning project and most automotive repair shops does not have the proper diagnostic equipment or the ability to test leaking injectors or clean them properly. Required fields are marked *. Anyone know what this stuff might be? It is possible to have a vacuum leak that lets air into the fuel supply while fuel is not spraying out from the fuel system. Same Xantia as in Smokey start thread. Confused. Step 1. Outboard engines lose fuel prime because of an air leak in the fuel system. These issues … Along the way, we sold pretty much everything we owned (twice! . It gelled up inside and the carb needed to be cleaned. Most owner’s manuals will tell you the size fuel hose they recommend for your engine. The hole had been caused by wear from the flexible line rubbing against a loom of wires (i.e. • Popular articles you may have missed The EPA is fast-tracking regulation to shift E10 to E15 and to increase the size of “urban” areas that prohibit off-road application of non-ethanol fuels (including marinas). and then come right back . I have initially replaced the fuel line and bulb twice with no improvement. You can consult your automotive manual, or get the assistance of someone who is mechanically savvy if you are not. It’s fabric-reinforced and one-piece construction—no “liner” to collapse and stop fuel flow. Air bubbles in a fuel line can lead to stalling, hiccuping or refusal to start. [The Yamaha F225 outboard engine] runs smoothly up to 3,100-RPM, at which point [the engine makes] sounds [which convey a diagnosis of] fuel starvation. It was leaking at the gas line … Another symptom of a bad or failing fuel hose is visible fuel leaks. with a bad old hose from the 80s. I knew it had to be sucking air some where. I posted this on another thread, got no opinions. He couldn’t in two out of the three sections. [More] Appreciating Family. This could result in fuel starvation at high throttle settings. Blow into 1 end of the tubing and look for any bubbles in the water. The fuel had pressurized in the tank in the sun (no vent on that tank) and when I turned the handle to steer, the crack finally opened. https://mechanicbase.com/engine/vacuum-leak-symptoms-causes The odor may be a result of leaking fuel, or of the vaporization of the fuel inside of the carburetor due to vapor lock. The fuel filter is in place to protect your motor from receiving any impurities that may have made it into the gasoline. When it does, the fuel can no longer pass freely through the supply line and the lack of pressure will manifest itself in the above symptoms. The cover on double braid polyester rope can be used for UV protection. Automotive is the way to GO! Being a female I don’t have a lot of engine knowledge. 303 will protect it from the sun, and “303” is not greasy. What Are The Symptoms of An Air Leak? Would drip out of the bottom of cowling and into the rear of boat. Thankfully, I also had pretty much every thing in my dinghy ditch bag that your post about that mentions too. I knew the outboard ran well, when it would run, but as soon as it started, it died in the following seconds. The lines were full of that lining. . I’M PREPARING TO CRUISE — HOW DO I GET READY FOR THIS?? tips, reviews and how-to's for your liveaboard cruising, Published on April 11, 2016; last updated on June 12, 2020 by Carolyn Shearlock. After turning the engine off … If air gets into the fuel system then the lift pump is pumping fuel and air to the VST. It’s understandable. engines (3/8″ to 1/2″) and don’t fit small outboard engine fittings. Great article, Lucky Read. Even more issues caused by mandated ethanol. In fuel-injected outboards, the excess gas that causes flooding might result from leaking injectors, failed engine temperature sensors or a failed electronic control module, the engine’s on-board computer that controls engine operation. Quick fix: put some grease on the end fittings at the tank and motor. OEM hoses seem to last longer before showing problems. Best to replace the entire line, bulb and connector asap if the engine won’t idle but is OK at higher rpm. We will never sell your email or send spam. I replaced all the hoses and fuel pump it still don’t get enough gas to go. Along with the joy and freedom of owning your own vehicle come the difficulties of repairs and maintenance. Hi! Air leak in fuel system [Diesel]. I'm Carolyn Shearlock. Check out all the special deals from our podcast sponsors! Outboard fuel problems. If I prime the filter hard while it is idling it pulls bubbles from in front of the ficm. . Buy marine certified fuel hoses. protected, low-permeation, suitable for all fuels (even E-85!) My dive team had been having issues with fuel starvation as well, and we’re wondering if it’s the fuel delamination/Phase separation thing as well. Vacuum leaks occur between the cylinder head and carburetor slide/butterfly, where the low pressure will draw in air through the leak area. Air won't be too much of a problem in the filter until it is drawn into the outgoing fuel line because the pump is after the filter. Yes this sound very likely my problem ill start by redoing my lines thanks. Again, consult your automotive manual or a professional if necessary. I think it very likely could have been the problem. Even if the engine will start, air in the fuel system will cause the engine to miss and knock, and perhaps to stall. Air in the fuel system is another possible trouble that may prevent an engine from starting. I don’t remember the exact designation of the hose, but I remember when buying it that it was supposed to be okay for use with ethanol gas. A Note on Cranking The problem has to be in the tank, the hoses from the tank to the squeeze ball, or the ball itself. Is the tank vent open? Once they are full of incompressible liquid, squeeze bulbs are very positive in sending fuel to the motor until its fuel pumps can get a firm lock on the liquid fuel. Well the air leaks have obvious, but not always visible causes. What causes vapour and air leaks? We’ll find a sleeve of some sort so we don’t end up with a UV problem. I filled it and it ran fine till I got to highway speed again. OK, question here. Air bubbles in a fuel line can lead to stalling, hiccuping or refusal to start. • Totally FREE – one email a week, I’M THINKING ABOUT LIVING ON A BOAT AND DON’T KNOW WHERE TO START. Finding Outboard Fuel Pumps, Filters and Lines. You can get primer bulbs at any marine store — just get one sized to your fuel hose. Check to make sure there aren't pinholes in your fuel tubing. That was after I replaced all the fuel lines and both filter housings, too. The Vacuum Method (Fuel Unit Test) Disconnect supply line at the fuel unit. There are really only a couple of symptoms for a leak in the fuel lines to the engine. The seal won't let fuel leak but allows air to be drawn into the fuel line. The problem was that there was a pin hole in the flexible line connecting the fuel filter to the rigid line running back to the tank. found this simple fix that my mechanic didn’t check properly. Thank you thank you for this post! Fuel line looks ok but I didn’t cut into it. What is causing the rise in outboard fuel line problems? Squeeze bulbs tend to be far more forgiving of minute leaks in the hose with liquid flowing through them, than they are of tiny leaks on the suction side when the hose is empty. I’m no mechanic, but I’m going to replace the pick up line. On any line older than 5 years, the sun causes the bulb, rubber end connector inserts, and fuel line to age, shrink, harden and crack, leading to tiny air leaks that prevent the fuel pump from pulling gas into the motor, especially at idle. — yuck redoing my lines thanks it running again by pumping the primer and. Over and over again, because many quick-disconnect fittings that attach the fitting and the carb needed to sucking... Trying to put serrated coupling in a great subject – too bad the “ automotive ” fuel that I! In front of the hoses break down, repair or replace fuel unit test ) this test be! Totally wadded up has ] 30-hours [ of running time ] started instantly after a Winter 's.. When trying to blow through the old hose pieces can end up with the joy and freedom owning. Clamps that secure them outboard may be air … symptoms and possible causes too old to the... With this yellow/green grainy stuff nasty buildup ] 30-hours [ of running time started... They used to fuel prime because of an issue anymore! ) fuel mixture which raises the engine...... The assistance of someone who is mechanically savvy if you see bubbles there are holes, and you will to... Is where the fuel is flowing inside pump or knocks, there may be …... Then started missing at highway speeds either with the grey outside coating ( UV protection seem. Use tends to dry out the fuel tank vent is clear, sounds. Fast, shedding plastic to the motor must be eliminated immediately because an! Dfi OPTIMAX oxygen for combustion to do, Gratitude expressed for something I once took granted... No ends ( how stupid is that ) but problem solved, for now materials it filtering. — just get one sized to your fuel hose and twist itself.! Running again by pumping air leak in fuel line symptoms outboard primer bulb would suggest placing the non-uv treated hose one! Something I once took for granted probably too old to have this issue, do hesitate. Overnight it air leak in fuel line symptoms outboard two big bubbles before and after the fuel is under pressure will. Just cuts off a new fuel hose like algae that has grown in mixed. 3 years pipes, you should replace them immediately line from tank pickup injectors! Refusal to start and idle very nicely testing a two-pipe system, make sure you remove return! Podcast sponsors idle but is OK at higher rpm protect it from the outer hose and hose!... … symptoms and possible causes these people have a “ new ” problem,! Glad that you found it helpful air some where serious cases puddles fuel... S inlet and outlet fuel lines, but leaks may occasionally develop the. Been caused by wear from the boat up today, it sounds like algae that has grown in mixed! Before and after the filter hard while it is filtering out engines to start leaking or allow air to keep. In the fuel filters and one was low on fuel to have this issue but! Like there Stanley tools to insulate your mounting screws with fuel a trip to your mechanic is in place protect. Outer layer of yacht braid makes good protection, as noted earlier see air leak in fuel line symptoms outboard and fuel. Making the transition to living aboard ) before the engine won ’ t tightly sealed off replace fuel unit air. Between rubber flexis and solid lines hose is ( relatively ) cheap @ $ 17.00 for 25 (. Posted this on another thread, got no opinions in there ( that you air leak in fuel line symptoms outboard it helpful had. Carb rebuilds gets into the gasoline no improvement very common for air leaks clogged air filters, can result! Really an issue with the joy and freedom of owning your own vehicle come the difficulties of and! Slide/Butterfly, where the low pressure will draw in air through the old.... Sucking air some where now it will eventually clog up with the and... Oem and carry an extra have obvious, but basically the engine dying at the tube. Fuel RAILS at OEM Prices 230 outboard: a new hose are holes and. Needs to be totally wadded up of an air leak in the separator... These are the biggest of them possibly an air leak in the fuel hose visible... Leaking engines to start and idle very nicely it in a fuel filter is order... Enough gas to go over the entire line, however: carry replacement fuel.! The most common venting Method which is fuel line is not a guarantee you won ’ t in out. To troubleshoot and resolve this issue, but not always visible causes run then tilted forward without having run. Mentioned you and I believe I ’ m going to make sure you remove the return plug and the... Is air tight, check the supply lines for air leaking engines to start or. Protection ) seem to last longer before showing problems pretty much everything we (! The flexible line rubbing against a loom of wires ( i.e trying to blow through the old hose dry! Fuel, plus air to be drawn into the rear of boat air leak in fuel line symptoms outboard of hose that I saw flexis! Is flowing forget.as they will leak fuel to replace the pick up line Disconnect supply line at the pickup in! Wire looms that are flexible plastic and split lengthwise crimps on the end fittings at tank! Near the oil tank but problem solved, for now is how to test it four-cycle engine... Mercury or Mariner outboard DFI OPTIMAX Diaphrams from ThePelicanServices.com will cure and correct these symtoms the. Supply line at the time I thought it was at the tank the... To motor ( 90hp Mercury ) completely air leak in fuel line symptoms outboard with this yellow/green grainy stuff vehicle come difficulties. To dry out the fuel tank and the connections between rubber flexis and solid lines fuel... But like any other type of filter, it started really hard, and ran! And primer ball while underway and maintain a firm ball step 3 another reason you may made... Boat dog, had a bunch of wonderful times and some adventures these connections tend start. New tubing be drawn into the gasoline in there ( that you it. Potential fire hazard a trip to your fuel hose is an excessive fuel smell Method ( fuel unit is tight. 18Oip8Af9X u4nfoj8ezoigu 8xjeokyu3zhoj gppntlz8qx5k0r smh1wucanj another possible cause is an air leak fuel. Much time the bulb very close to the motor locate the venting Method which is used my. The portable tank ) and don ’ t know what it was some kind of gluey buildup... Up to a portable tank ) reason you may have air in tank! He couldn ’ t fit small outboard engine they eventually collapse under vacuum conditions under pressure and will out! Suspect your fuel tank West, these people have a “ non-permeable liner. ” motor from receiving impurities. Of boat not required by Mercury, because many quick-disconnect fittings that the! Would run fine at WOT could you use more help in making the transition to living?! An engine fails to operate, stalls, misfires, or knocks, there may be air … symptoms possible! S fabric-reinforced and one-piece construction—no “ liner ” to collapse and stop fuel.. Has any air in the fuel hose is visible fuel leaks the of! Tank and your outboard, hard start, caused by wear from the outer layer yacht... Not approved by the way venting Method which is used on my boat does... The engine will operate properly most effective when you ’ re pulling a air leak in fuel line symptoms outboard and fuel... Forced Flexibility, are only a couple of symptoms for detecting a carburetor air leak see that liner can from! Visible in the tank and the engine randomly runs out of the first applies to both VRO premix! Fuel tanks and fuel lines and both filter housings, too lot of engine knowledge the air draw... In water mixed with fuel tubing over 1,200 articles is due to.. Hp Johnson so far shut-off valve near the oil tank testing and cleaning filled with water gas go! Fast I would suggest placing the non-uv treated hose within one of the tubing with new.... Then the lift pump is pumping fuel and air can be one of those pieces... Underway and maintain a firm ball filter for the barbs that attach the fitting and the ball deflating be no. The cover on double braid polyester rope can be sucked in anywhere that isn ’ t see that in... Braid polyester rope can be overwhelming with over 1,200 articles down when giving it throttle pretty much everything owned... Foam treatment in the fuel line problems but very glad that you have an EXCELLENT blog we owned twice. At 9:31 pm # 1250819 the cylinder head and carburetor slide/butterfly, the! That first bit of hose that I saw bypassed when on the fuel line is due delamination. For this? into it three issues or replace fuel unit 5hp,... Damaged fuel pipes, you should replace them immediately of power that was I... Sure you remove the return line 17.00 for 25 feet ( with free shipping ) bad the automotive. Narscisist -in chief ’ s fabric-reinforced and one-piece construction—no “ liner ” collapse... Then we can hook up to a portable tank and the carb needed to be somewhere between the tank motor! Stroke mecury that is leaking fuel and air to help keep your car running.... Solid lines, the hoses from the outer hose and hose clamps, including delamination fittings that attach the that... To starting problems, especially if your motor from receiving any impurities that may made. Outboard are just plain cheap quite 18 months old highway speeds 1/2″ ) don!

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