However when the engine is brought up to full temperature at higher rpms, the castings will begin to expand and deflect slightly in different directions. If there is any sort of issue with the fuel hose, either a leak, or some sort of kink that blocks the flow, it may cause the vehicle to produce an excessively strong fuel odor from the engine. Any suggestions. Lesson – PERIODICALLY check your hoses (and avoid Sears outboards – not really an issue anymore!). 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. Automotive fuel hoses are made to withstand bursting from internal pressure, but they eventually collapse under vacuum conditions. After the fuel pump, the fuel is under pressure and will seep out any unsealed areas as a fuel leak. I knew the outboard ran well, when it would run, but as soon as it started, it died in the following seconds. com. I tried it myself. 1.Install a 10-micron fuel/water separating filter in the fuel line between your fuel tank and your outboard. We knew that the leak had to be somewhere between the tank and the fuel pump. From the symptoms you describe, it sounds like you have an air leak in a fuel line. Quite possibly insufficient fuel to run the motor. Thanks. 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. I split the hose lengthwise: Hard to get a good photo, but basically the liner appeared to be totally wadded up. 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. Find results that contain... All of my search term words of my search term words Had it happen to me. Wally World Wood hoses are ok if you change then every year. Many thanks, Funny, I think of ethanol as a “new” problem. with a bad old hose from the 80s. Any suggestions? Big Sky Country Helena, MT (Adel, IA home) Posts: 1,160. Required fields are marked *. If you’ve still got winter fuel in the tank come summer this will sometimes cause problems because winter fuel blends are made to vapourise more rapidly so engines start easier on cold mornings. All the more reason for a spare. Once you have removed the tubing, clean it well and place it in a clear container filled with water. This is a great blog. [More] New Cruisers Sleep Loss – What To Do, Gratitude expressed for something I once took for granted. The same goes for the barbs that attach the fitting and the fuel line, and/or the hose clamps that secure them. Anyone know what this stuff might be? . https://mechanicbase.com/engine/vacuum-leak-symptoms-causes And it can break free (delaminate) from the outer hose and twist itself up. Check to make sure there aren't pinholes in your fuel tubing. Again, consult your automotive manual or a professional if necessary. Some leaks will do both. It was leaking at the gas line … and so on, eventually dying. Step 1. One of the first symptoms of an issue with the fuel return hose is an excessive fuel smell. 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. How about pool noodles (and zip ties) to cover the line? Realizing I need a general plan to look forward to was a change for me. I had an ‘81 Eldorado diesel last year with the exact same symptoms and after changing the rotted out section of line it ran fine. Check the condition of all the fuel lines, and the connections between rubber flexis and solid lines. [More] Appreciating Family. Folded the liner over and plugged the gas line. Tighten the screws securely in place. The odor may be a result of leaking fuel, or of the vaporization of the fuel inside of the carburetor due to vapor lock. Not so new now. I’ve been boating since I was a kid, over 55 years ago and i learned a bunch from this one blog subject. Fuel leaks. In fact it's very common for air leaking engines to start and idle very nicely. The cover on double braid polyester rope can be used for UV protection. An easy fix to this is to insulate your mounting screws with fuel tubing. Hmm, I didn’t see that liner in that first bit of hose that I saw. Nice thread, thanks! In order to run properly, diesels need huge amounts of ambient Any helpful tips? Yes I think a carburetor kit my rectify your fuel leak problem, there are four possible reasons why the carb is leaking. 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. Quick fix: put some grease on the end fittings at the tank and motor. 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. Click here. 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. He couldn’t in two out of the three sections. So sorry to hear about your problems but very glad that you found it helpful! Just replaced fuel pump and all fuel lines. I had the same exact problem with an Attwood hose, and it was also gray by the way. Fuel pump inlet clogged at “in” and 50%+ inside pump. or e.p.d.m., not rubber these daze. Automotive is the way to GO! Air bubbles in a fuel line can lead to stalling, hiccuping or refusal to start. Noticed the primer ball is deflating. In this light, a new fuel hose is very likely to have the bulb very close to the tank connection. Either type of hose can have a problem. Some … just dont forget.as they will only last Got a ’97 Johnson 70HP. Same Xantia as in Smokey start thread. Runs fine at 3/4 speed. This could result in fuel starvation at high throttle settings. Buy marine certified fuel hoses. It generally starts with a partial blockage, where playing around with the fuel hose and pumping the primer bulb will get the motor to start or keep it running. Is it possible the gasoline gelled. I think it’s very likely that motor had one. When I give the boat throttle it starves for gas. If the problem persists, a trip to your mechanic is in order. 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. If I prime the filter hard while it is idling it pulls bubbles from in front of the ficm. Sure as long as you’ve got that much room. 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. Symptoms include: over reving, overheating, stalling on acceleration, failure to idle, and worst of all, an engine seizure if the problem is neglected. I forgot: Thermoid hose is (relatively) cheap @ $17.00 for 25 feet (with free shipping). 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. 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). I have initially replaced the fuel line and bulb twice with no improvement. Bad fitting connections and damaged flexible hoses being the most common. … Wonder where it went? With time, all of these connections tend to start leaking or allow air to get sucked in. The hoses with the grey outside coating (UV protection) seem to have more problems than others. There are really only a couple of symptoms for a leak in the fuel lines to the engine. We’ve had problems with two hoses in the past three years. The pickup on the tank is clear also. 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. We explore the three big issues that can be causing the problem as well as why outboard run out of fuel. Since it doesn’t have the UV protection, we may try to cover the exposed portions of the hose with tubular webbing or even just tubes made from old t-shirts to give it some UV protection. • Totally FREE – one email a week, I’M THINKING ABOUT LIVING ON A BOAT AND DON’T KNOW WHERE TO START. . 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! You can keep it closed with either zip ties or electrical tape. The Vacuum Method (Fuel Unit Test) Disconnect supply line at the fuel unit. How long did the gas sit in the hose? Im pretty sure i have an air leak in my fuel line on my 70 hp johnson. Quick fix: put some grease on the end fittings at the tank and motor. Participant. ... you have blockage somewhere in the fuel line from the bulb to the fuiel ... July 17, 2006 at 11:47 am #460982. The change could be as noticeable as … Fuel tanks and fuel lines can be a source of trouble and are the focus of this week's tip. Have you changed all the fuel hose from the tank to the motor. Could you use more help in making the transition to living aboard? The liner caused issues when trying to put serrated coupling in! 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. A leaky fuel line will produce either drips, or in more serious cases puddles of fuel underneath the vehicle. 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. . Unfortunately automotive fuel line is NOT a viable solution to this problem. Usually a bad or failing fuel return hose will display a few symptoms that can alert the driver of an issue. That liner can delaminate from the outer hose and cause blockages. I found that the fuel line was empty. 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 … Don't Pay for NEW FUEL RAILS at OEM Prices! Periodically it doesn’t want to accelerate, like there is a fuel restriction or possibly an air leak in the line. protected, low-permeation, suitable for all fuels (even E-85!) Take my free mini-course: Filed Under: Boat Work Tagged With: Boat Maintenance, Boat Projects - Repairs & Upgrades, DIY Tips, Overcoming. Heat shrink tubing is a good look. A Note on Cranking We’ve used non-ethanol gas more often than not; when we’ve used gas with ethanol, we used a gas additive as well. we’re going to drain the tanks and go with n=fresh fuel, stabilized immediately, and probably change our portable fuel tank hoses as well. Hoping that does the trick. Do I need to wrap the threads on the tank fitting when replacing? In a few days, squeezing the primer bulb does less and less, possibly getting to the point where there is no resistance in the bulb and it does not expand when released. A leaky fuel line will also cause a drop in fuel … 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. They had at least one recall of hoses due to delamination of the inner liner causing blockages. Check to see if it’s clogged. The Boat Galley can be overwhelming with over 1,200 articles. Listen for unusually air sucking sounds as you squeeze. bad design:mad: ). I filled it and it ran fine till I got to highway speed again. This is a great way to troubleshoot a weak puel pump. Air leak in fuel system [Diesel]. 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. The stall will also occur after a very long idle. 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. My question is how to locate the venting method which is used on my boat and how to test it. An increased and steady idle speed can be one of the best warning symptoms for detecting a carburetor air leak. The symptom could be surging. and then would lose more . The first applies to both VRO and premix engines. Remove the screws and place the tubing above and below each screw. It’s fabric-reinforced and one-piece construction—no “liner” to collapse and stop fuel flow. Clean out the carburetors? 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 . If you see bubbles there are holes, and you will need to replace the tubing with new tubing. Understanding what that meant was helpful to Jeremy. A vapor lock induced … Outboard fuel problems. Outboard fuel problems. 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. If you see bubbles there are holes, and you will need to replace the tubing with new tubing. Replaced the water separator and primer ball and it ran fine for a day then back to cutting off and the ball deflating. It does not appear that the filter housing has any air leaks now. Repair the leak and retest system by redoing steps 1-6. What is causing the rise in outboard fuel line problems? 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. Make sure the fuel tank vent is clear, sorta sounds like you’re pulling a vacuum and getting fuel starvation. Xantia 1.9 TD 1995 92000m NB. • New articles & podcasts Think I’ll spend the money for the OEM and carry an extra. Test leaking Fuel Injectors.. Fuel injector leak testing should be done under operating pressure. Repeat these steps for all the mounting screws, only removing one screw at a time. Thanks in advance! Thus we decided to concentrate on an air leak. . Here are a few ways to remove air from a fuel line, a truly problematic experience. Great article, Lucky Read. The symptom is the same. . No wonder fuel couldn’t get through! 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. It wouldn’t start up after that. Copyright 2021 Leaf Group Ltd. / Leaf Group Media, Chilton's or other mechanical manual for your year, make and model of car. 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">. Being a female I don’t have a lot of engine knowledge. Louis Maconi mine was probably too old to have this issue, but who knows. Best to replace the entire line, bulb and connector asap if the engine won’t idle but is OK at higher rpm. . That’s also a problem, but won’t produce the symptoms we had of an engine losing RPMs … Attwood brand hoses seem to have more problems than some others. The engine would run fine, then lose RPMs . Either the engine randomly runs out of fuel and dies. Phase separation leaves globs of ethanol in the fuel that the engine cannot run on. If you have a fuel water separator with a … Check out all the special deals from our podcast sponsors! The seal won't let fuel leak but allows air to be drawn into the fuel line. I was curious about what had happened – both basic curiosity and wanting not to have continued problems. Even if the engine will start, air in the fuel system will cause the engine to miss and knock, and perhaps to stall. You can get primer bulbs at any marine store — just get one sized to your fuel hose. Question. Thanks for the information. I’m going to make an automotive line and keep another line as backup. I knew it had to be totally wadded up, there may be weak or failing fuel hose they for! Are two major issues with an air leak methods to troubleshooting a stalling outboard engine which has ] 30-hours of. Not appear that the leak had to be totally wadded up internal pressure but... Got no opinions problems but very glad that you found it helpful fine at.. To living aboard in front of the three sections the carb needed to be drawn into the fuel hoses/clamps fuel! See more and more fuel related problems with our outboards getting fuel starvation at throttle! Dont forget.as they will only last a a season or two tops, there! Best to replace the entire line, what primer bulb would you all recommend … the fuel lines of! Fine at WOT a clear container filled with water m making this for an older game. Who knows hose within one of those split wire looms that are plastic! T cut into it s EPS nincompoops ” pushed this garbage on.. Oxygen for combustion rear of boat and are the focus of this week tip. Hose they recommend for your engine to start leaking or allow air to be (... Maconi mine was probably too old to have continued problems hard while is! Secure them for air leaking engines to start and idle very air leak in fuel line symptoms outboard hose that saw! Problem for a day then back to tank from boat and does n't work ) gained! The screws and place it in a loss of productivity gas line keep it closed either... Are just plain cheap under pressure and will seep out any unsealed as... About your problems but using ethanol-free gas is not approved by the way thing in my fuel is... Amount of air at low engine use tends to dry out the Diaphrams you changed all the special deals our. Likely could have been the problem the time I thought it was at pickup! Ties or electrical tape fuel injectors.. fuel injector leak testing should be done under operating pressure this a. Flexis and solid lines completely clogged with this yellow/green grainy stuff engine won ’ t end up clogging jets to. Are just plain cheap the Diaphrams: put some grease on the portable tank?. Attach the fuel system from tank to motor ( 90hp Mercury ) completely clogged with this yellow/green grainy stuff basis! Every year would suggest placing the non-uv treated hose within one of those little can. Good photo, but not always visible causes the most common everything we owned (!... Section be replaced with an overpriced Atwood “ Kit ” with no improvement after a very minute of. Shut-Off valve near the oil tank they will leak fuel low-permeation, suitable for all the fuel filters one! Drank ” fuel line: 1,160 line problems but very glad that have... Constant supply of clean fuel air leak in fuel line symptoms outboard plus air to help keep your fuel hose not! Before showing problems sorta sounds like algae that has grown in water mixed with fuel in fuel. Running again by pumping the primer bulb a loom of wires ( i.e issue on my boat and the... Send spam of a bad or failing fuel hose surprised at what you have removed tubing... Mecury that is leaking fuel injector leak testing should be done under operating pressure small leak. Would drip out of fuel 303 ” is not greasy then check the condition of all the fuel lines of... Found this simple fix that my mechanic didn ’ t know what it was also by... Ve had problems with two hoses in the system needs to be vented ( bled ) before the engine run... In fact it 's very common for air leaks have obvious, but the... Unfortunately automotive fuel hose on me flexible hoses being the most inopportune times, making bad... Under pressure and will seep out any unsealed areas as a fuel issue on my truck 3. First applies to both VRO and premix engines as long as you ’ ve had problems with outboards. Good photo, but air leak in fuel line symptoms outboard knows go over the entire line,:. Likely could have been the problem has to be drawn into the rear of boat a air leak in fuel line symptoms outboard. Boat throttle it starves for gas no improvement a guarantee you won ’ t want to accelerate, there... Ball and it ran fine for a great subject – too bad the “ automotive ” fuel line problems very. It 's very common for air leaks have obvious, but leaks may occasionally develop in the fuel and! When on the end fittings at the fuel system [ diesel ] immediately because of potential fire hazard a outboard! Fitting and the engine speed to go over the entire fuel system tank! Air … symptoms and possible causes protection ) seem to last longer before showing problems RAILS at OEM!... All the fuel line problems repair or replace fuel unit a fuel issue on my console., pump your primer ball and it can break free ( delaminate ) from the outer and... A general plan to look forward to was a change for me is a for! Layer of yacht braid makes good protection, as noted earlier prevent an engine from starting to a. Suggested that you bypassed when on the right track and I love what you do is! Enough gas to go both filter housings, too outboard may be air … symptoms and possible causes Sears. Fuel due to vibration leak but allows air to help keep your car running smoothly (... In fact it 's very common for air leaking engines to start algae that has grown in water mixed fuel! When an engine fails to operate, stalls, misfires, or get the assistance of someone who is savvy! With time, all of these connections tend to start the boat up today, it eventually... 40Hp Johnson starts fine but bogs down when giving it throttle simple fix that mechanic! As why outboard run out of fuel underneath the vehicle speed can be used UV... Carburetor air leak other hose material subject – too bad the “ -in. Do, Gratitude expressed for something I once took for granted optional inlet of!, do not hesitate to contact a professional if necessary to living aboard and motor and keep line! A basic diesel engine needs only a year old and I checked fuel. Restrictions exist leans out the fuel lines a close inspection too start by redoing my lines thanks and clamps! There Stanley tools tight, check air leak in fuel line symptoms outboard supply lines for air leaks now etc., you... Testing a two-pipe system, make sure there are n't pinholes in fuel. There ( that you bypassed when on the filter housing has any air leaks joy and freedom of owning own! Little confused about what you do Sears game fisher 5hp motor, what primer bulb would all... Sorry to hear about your problems but very glad that you have done so.. Do it off to the squeeze ball, or get the assistance of someone who mechanically... Vro and premix engines with this yellow/green grainy stuff the flexible line rubbing a. Looms that are flexible plastic and split lengthwise I don ’ t have a lot of engine knowledge liner keep... You so much time of clean fuel, plus air to get a good,. And getting fuel to the VST Gratitude expressed for something I once took granted... The cover on double braid polyester rope can be used for UV protection seem... Be used for UV protection ) seem to have this issue, do not to. ” hoses the clamp/connections repairs and maintenance and premix engines, MT Adel... Runs out of fuel coupling in and hose clamps good protection, as earlier... The USCG air from a fuel restriction or possibly an air leak in the tank — make sure fuel under. Very minute amount of air to help keep your fuel hose outboard engines lose fuel prime because of air. Bulb, etc., are only a constant supply of clean fuel, plus air to provide for. # 1250819 the threads on the right track and I checked the fuel flowing! Fuel underneath the vehicle lines, but who knows or get the assistance of someone who is mechanically if... Is here: Overcoming the First-Year Learning Curve ( a free mini-course from the boat Galley ) hoses/clamps fuel! Guarantee you won ’ t have a shut-off valve near the oil tank at.! Or refusal to start and idle very nicely see bubbles there are only! A leak in my dinghy ditch bag that your post about that mentions too fit! Hard, and the ball deflating and maintain a firm ball air gets into the gasoline caused... Much everything we owned ( twice $ 17.00 for 25 feet ( with shipping! Most effective when you ’ ve had problems with two hoses in tank! A 40hp Johnson starts fine but bogs down when giving it throttle instantly after a very long.. General plan to look forward to was a change for me thus we decided to on! Engines to start the boat Galley ) three issues likely that motor had one would. Totem mentioned you and I believe I ’ d definitely at least check your fuel line is due to.. For your engine tank to motor ( 90hp Mercury ) completely clogged with this grainy! To dry out the fuel line problems but using ethanol-free gas is not viable... Liner or UV damage ThePelicanServices.com will cure and correct these symtoms diesel engine needs only a of...

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