When they go bad, they won’t stay hard. Thank you!,,,will work on that tomorrow afternoon,,,,, Marine Mechanic: Tan, MerCruiser Certified Technician replied 7 years ago. Hold the primer bulb vertically with the arrow facing the sky and squeeze the primer bulb until it is completely collapsed. Over time, fuel lines can harden, and a brittle line is prone to leaking fuel, either from a crack or around the connections where it meets the gas tank and the carburetor. Just haven't had a lot of need to read it as only breakdown I've had is Tilt/Trim relay failure about 3 years ago. Any help on how to get the airlock out or what I should try will be appreciated. i have changed all the filters and it did not help at all. When the engine is primed it cranks and runs good with good compression until the fuel has been used from the prime in the float tanks. I replaced with Evinrude 3/8" line and Evinrude 3/8" primer bulb. Use a circuit tester to check all the electrical connections to the fuel pump. 0 votes Thank you for your question. It is a cheap fix to replace a primer bulb. Be careful to install new fuel lines on the engine the same way the original fuel … 06-17-2012, 05:02 PM. So i after i got it home, i replaced the fuel line all the way from the check valve at the tank to the motor (Check Valve had nothing in it like someone had already punched it out). I have replaced the fuel lines, diaphrgam and check valves in the fuel pump, rebuilt both carbs, replaced fuel filter, and all new gaskets from the fuel tank through the carb. Two separate pickups in the fuel tank? Step 3. Now when the engine is shut off after running a while. Im assuming is unlikely that the the hard piping along the frame to the engine bay has a hole. If the carburetor is not adjusted properly or the gaskets leak, the engine is difficult to start; adjust the carburetor and replace worn gaskets. Step 2 Consult a pro. Old fuel, water in the fuel, or the wrong fuel-to-oil ratio can make a Mantis tiller hard to start. Jimmy Jig. If it doesn't get … Can they be swapped between tanks and see if the problem follows the pickup and its fuel line? When you pull the starter rope, tabs extending from the pulley and cam should grab the hub on the engine, causing the engine to turn. Engine is seized. Try a manual reset. yes I have 2 separate lines, separate water separators. If it's not that, then am I looking at a fuel pump? The most common cause of the fuel system not holding pressure up to the injectors is the fuel pump inside the fuel tank. The primer bulb is designed to draw fuel into the carburetor from the fuel lines. I pulled it out to check the issue. If the primer will not prime, the engine will not run. Then, stick your finger on the hose barb. Metacafe,  I have a fairly new motor with original fuel line and bulb. Remove the starter assembly and inspect it to determine if it is working properly. PS - If it's that VST float valve, you're running Rich. The primer bulb is best installed where it can be easily accessed for operation. Rather than "soft" was it "partially collapsed"? The lift pump is "trying" but can't bring the fuel. When you release the rope, the tabs should retract and the rope should rewind back on the pulley. If you're troubleshooting your smart lighting setup, a manual reset of each bulb might be in order -- and all it takes is a few flicks of the switch. Blower, lawn mower, weed eater, trimmer Supported videos include: Easily create a Forum Website with Website Toolbox. Please enable JavaScript in your browser settings. Only 98 here east of Dallas - thinking of breaking out the "long-handles"! My fuel primer bulb won't get hard and I think this is why my Yamaha 250 HPDI is cutting out at higher throttle settings. What's up? The ball won't stay very firm when running - that's Normal. Lights Overview. I also noticed that the ball on that particular engine did not stay hard even after it had been running for some time and primed. Never had any issues with the motor starting, idling or running WOT. Remember: Using others' images on the web without their permission may be bad manners, or worse, copyright infringement. Remove the spark plug, and wipe it dry with a clean rag. The ball was soft not flattened out. Dailymotion,  Easily create a Forum Website with Website Toolbox. 1 decade ago. New one won't stay hard either, still surging. In most pre-rigged boats being delivered these days, the primer bulb is seen located within 12-18 inches of the engine. They are pretty easy to get to and a relatively cheap maintenance item. Fuel line bulb would not stay hard, replaced with new. Step 1. pumped it up and it was good the rest of the day. 1- If the bulb was soft, that points more toward a restriction somewhere back in the lines/filters. Quick fix: put some grease on the end fittings at the tank and motor. You need to look at the primer bulb and line as well as check things like the gas tank and seals to get it working again. Facebook. If the bulb pressurizes, be careful reconnecting the line as it may spray fuel. 16 years of experience. A leaf blower's fuel lines carry fuel from the tank to the carburetor and from the primer bulb to the fuel system. The bulb was soft after running. Fuel filters may need periodic replacement or cleaning – consult your owner’s manuals for more details. Primer bulb won't stay hard enough to start Help please !!!! If the filter appears dirty, replace it with new one. Pump the bulb until it is firm to the touch. faulty, fuel lines not hooked up properly/pinched. Customer reply replied 7 years ago. 06-24-2013, 07:37 PM. Try to start the chainsaw after priming the carburetor. I noticed my primer bulb won't stay hard on the engine side so for me that's my only clue. Dailymotion,  The other test you can do is to run the engine on another fuel source to eliminate a fuel restriction of the boat side fuel system. Starts ok, idles ok, about 2,000 rpm and up misses, no fuel leaks that I can see no codes, primer bulb is solid, fuel filter clear with a small air bubble in it, it did this last year and the primer bulb didn't seem to stay hard, took it in and dealer said bad fuel but primer stayed solid when I got it back. A cracked carburetor bulb will not be able to create a vacuum and will prevent it from sucking fuel into the carburetor. Give it a good thorough looksy on all the fuel lines. Bad starter recoil. Watch the Fuel Filter. Another logical cause could be the fuel pump. If not, what else? Won't Stay Running. it could be a slight crack or weathering in the bulb or the hose. Compare it to the other engine. If you're troubleshooting your smart lighting setup, a manual reset of each bulb might be in order -- and all it takes is a few flicks of the switch. I have a Walbro carburetor and the primer bulb appears to work, as it is drawing fuel into the bulb but no fuel is going to the carburetor. It only delivers the fuel to the engine. Supported videos include: Pull the starter rope sharply if the engine won’t start. Found this to be part of my problem when my separator wasnt filling all the way. Note: Your browser does not have JavaScript enabled. The line going to the primer bulb gets hard w/fuel but the other line is just full of air. Please enable JavaScript in your browser settings. If the primer bulb stays hard then you have a bad connection at the engine and NO fuel is getting there. Disconnect the fuel line from the engine side of the bulb. Well, one problem is, if its an 8.1, its not a diesel. primer bulb doesnt need to stay hard to start the engine, you pump to fill the carbs or vst and the rest up the engine. When the primer bulb isn't working, it may be a problem with the bulb itself, with the fuel lines that feed fuel to the bulb or both. Check the oil level. Click to see full answer Keeping this in view, how does a Marine primer bulb work? Your fuel gauge, as you might expect, lets you know how much fuel is in your gas tank. I'm pretty technical in my work but don't wrench on motors. No matter what, the primer bulb wold not stay hard. I will be spending more time with this manual now though to learn more about the motor. Here are the symptoms: Boat started and ran ok for about a hour; when I went to st … read more. A leaf blower that won’t start at all may require fuel. I recently (this past weekend) replaced the complete fuel line from tank to the motor, including bulb on my pontoon boat. This can make a mess and pose a safety risk, as leaking fuel can potentially start a fire. Not recommended to run a "T" off of one pickup tube. Replace it according to the owner instructions. The fuel pump has a check valve built into it that is supposed to keep pressure to the injection system when you shut down and vehicle sits. No fuel at your carburetor can be caused by many things. If there is no current, check the fuse. BUT, the bulb won't stay totally firm either. At 7 years, the fuel line was getting chalky and leaving black residues on hands whenever it was touched. If cleaning the carburetor isn’t effective, rebuild or replace the entire carburetor. Then the larger line from the carburetor should connect to the short port on the primer. One thing you can test to see if this is a injector issue is to take the boat out and put the motor i full throttle when it loses its power, go and check if the bulb is soft, if it is, try to squeeze it til it gets hard. If the fuel pump has a hole in the diaphragm it will not allow the primer bulb to get hard and the engine will run out of gas if the fuel pump is bad. Pump the primer bulb to move fuel into the carburetor or -- if you have a fuel-injected motor, into the low-pressure fuel pump -- before you start the motor. 5. I have had a problem with not getting air out of the bulb. ... and tilting the engine up should not drain any fuel from your carbs. It could be a simple issue like a fuel filter plugged so tight that no fuel can pass through. A hole in the fuel … There is usually not a priming system on a gas engine, because the fuel pumps will usually get it through the smaller filters used quick enough you dont need them. 2001 (I think) Johnson 115 4stroke fuel injected. IS YOUR Briggs and Stratton engine Priming correctly? 1- If the bulb was soft, that points more toward a restriction somewhere back in the lines/filters. Refill if needed. i would check that first then try some differnt fuel. How to fix a primer bulb that won’t prime and fill with gas, small carburetor, small carb. Make sure fuel is good/fresh and fuel lines are not pinched or plugged. I noticed getting the bulb filled with [fuel] was a real [aggravation]. Inspect the fuel line for leaks and kinks to make sure fuel can flow. If it still won't start, the problem could be the spark plug, ... On models with a primer bulb, press and release the bulb twice to prime the carburetor, which clears air from the fuel lines and move fuel into the carburetor. This troubleshooting guide will help you determine why your 9.9HP Mercury boat motor won’t start. Links below may help trouble shoot your issue including manual. If there are obstructions to the fuel flow from the tank, it can even collapse while the engine is trying to pull fuel. If you have just replaced the fuel hose or bulb, double-check that the arrow on the bulb points from the tank to the motor (it has one-way valves in it). This sticky fuel can clog up the carburetor and make the engine hard to start. Probably my bad. ... Posts: 645; Share Tweet #2. Check the primer bulb. Ask Your Own Boat Question. The anti siphon valve can get plugged or sticky also. I might just order some new lines as well and just replace them. Check valve needed to be wetted? Remove and check for problems. If your saw stalls out on idle or if the chain rotates, your engine speed is set improperly. Fuel primer ball won't stay hard. full of air). And also at the end of the fuel system there is a "Fuel pump" (Look at the picture)    with 3 hoses i might take that one apart to and clean it up. My f115 is doing the same thing. Give your feedback by voting on answers. During our take your Kid to work day Video we encountered mechanical issues with our boat. Large images may take a few minutes to appear. low fuel pump pressure or a flooded carburetor can cause it not to start up. My fuel primer bulb won't get hard and I think this is why my Yamaha 250 HPDI is cutting out at higher throttle settings. Many features may not work properly without it. With the arrow pointing to the side where you pulled the hose off. I replaced the bulb and it will not get hard. It primed up fine and to hard pressure with just a few pumps, maybe 5 pumps. At 7 years, the fuel line was getting chalky and leaving black residues on hands whenever it was touched. The lines have a number of years on them. It will not stay "hard" while operating but if you can pump for that long then best replace the bulb with a genuine one-not a cheap aftermarket one-they cause more problems then they are worth. Remove spark plug and try to move engine manually. After posting the question and reading everything I could find here on fuel priming and the bulb I went outside and tried to prime again with the bulb. Is Your Lawnmower Hard to Start? 4.8/5 (607 Views. I am going to replace it with and Evinrude bulb. MR. T. Lv 6. So it sounds like you have a bad fuel pump. If the fuel pump is electric, the 12-volt power may be shorted. I do have a service manual and purchased it from BB some years ago. The small fuel line that has the fuel connected to it in the fuel tank should connect to the carburetor. If your boat and bulb are in the sun and stored in the sun and the bulb is more than a few years old, replace it. Still no go, if you say primer bulb shows fuel in it, and you press the primer bulb say 10x and choke on and still no fuel in engine, the carburetor is either not adjusted to allow fuel to enter engine, new carb. However, you may have an air leak in your fuel line at a fitting or at a fuel filter. Fuel pump is most likely the problem, but if you have an onboard (installed) … Large images may take a few minutes to appear. Replace the fuel filter if it's covered with deposits and doesn't allow fuel to flow to the carburetor. Inspect the carburetor bulb for cracks on its face. Vocational, Technical or Trade Scho. In addition to preventing the engine from starting, you may also notice fuel leaking from a cracked primer bulb. Press the primer bulb again, and … I don't believe either fuel line has a crack. one thing to check would be your primer ball. Topic: Primer bulb won't stay hard (i.e., fuel line problem) David Jenkins: posted 06-11-2003 08:29 PM ET (US) Yesterday, while working on the boat in the driveway, I noticed that the primer bulb was not hard so I squeezed it a few times to fill it with fuel. The lift pump is "trying" but can't bring the fuel. Im going to check the lines through the top of the separator and see if there is anything. If the recoil starter assembly is defective, the leaf blower won't start. Squeeze until the bulb is firm — but don’t try to force it as you’ll end up flooding the motor (see below for how to detect and fix that). If I pump the bulb a few times it a few times the motor runs and then stalls. The fuel bulb is soft. Fuel Pump and Relay – Your fuel system needs to be pressure tested and if you have the equipment, then test it. No matter how hard you pull starter cord won't budge or barely moves. I use to be able to prime the bulb and hear the fuel running through the siphon valve, then it stopped one day. Replace if necessary . A defective fuel gauge can be a symptom of several problems such as a blown fuse, a broken circuit in the dash panel, or a fractured float -- the part attached to the sending unit in the intake fuel pump. The 8.1, or Vortec 8100, is a gas engine. I think I over primed it as well because I suddenly got fuel and oil mixture dripping in the front. The bulb is NOT suppose to stay hard. If the fuel is not being pumped out of the tank, either the problem is the fuel lines are not connected correctly or the carburetor has an internal problem. Vimeo,  My question is aside from the fuel filter head what are the other areas that are common to leak. Then the two check valves open and allow fuel to flow. At higher rpm's the extra fuel may be 'covered up' a bit by the extra air coming in. 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 am sorry you are having a problem with the trimmer model 358795190 . Inspect the fuel filter for blockage or discoloration. Then today, after … My fuel primer bulb won't get hard and I think this is why my Yamaha 250 HPDI is cutting out at higher throttle settings. Surging at higher RPM. Starter recoil is just jammed or actually broken. 43 Votes) Primer bulbs aren't meant to stay "hard", they are designed to pump fuel to the motor before start up and then the fuel pump does the work, and while that is happening the bulb will not be hard. Your string trimmer, also known as a weed wacker or weed eater, takes fuel from the tank to the carburetor via the primer. If your URL is correct, you'll see an image preview here. Automotive Mechanic. I'll be checking fuel pressure next. With the starter recoil removed. When the primer bulb on your lawn mower isn't priming, it puts the carburetor at a disadvantage. I replaced the bulb and it will not get hard. 0 0. Primer bulbs aren't meant to stay "hard", they are designed to pump fuel to the motor before start up and then the fuel pump does the work, and while that is happening the bulb will not be hard. If it doesn't move engine is seized. There may not even be signs of leaking, since a fuel line leak on the tank side would have to be above the fuel level for leakage to show. The primer bulb works and I can see the gas inside the bulb. When I prime it, however, I notice the main fuel line remains empty (i.e. New of these 3 didn't change anything. I see some people have said get [EFI] or fuel injection and you won't have [the problem of the primer bulb not getting firm]--rubbish! Remember: Using others' images on the web without their permission may be bad manners, or worse, copyright infringement. I replaced the bulb and it will not get hard. Air and fuel should leak out as you pump. Try a manual reset. Troubleshoot Carburetor Step 1 Turn your chain saw on and let it idle. I checked the lines from the separator to the tank they were open. Didn't have a lot of time to work on it but I managed to rule these out--since I work on equipment part time, I try to always have spare filters, line, and primers on hand. It's relatively new, but I do see a slight crack (not all the way through). Fresh ethanol free premium gas. The pulling speed can’t be too limp. Jason. Check the fuel line for breaks and deterioration. If the carburetor is clogged, try cleaning it with carburetor cleaner. Remove and check all fuel filters located in the fuel line and in the carburetor. Problem: Very hard to engage fifth gear or cannot be engaged at all. i have had that problem before and it would die after a little while on idle, i would go back and check the primer bulb and it was as soft as it could be. Note: Your browser does not have JavaScript enabled. Black is OK, but fluffy isn't. Any help on how to get the airlock out or what I should try will be appreciated. I found an inline return filter to be cracked. Metacafe,  Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. Good luck. Great thanks...I call Bills tomorrow. 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. Disconnect the fuel line put you finger over the end of the fuel line squeeze the primer bulb does it get hard? YouTube,  Never had any issues with the motor starting, idling or running WOT. Remove the starter assembly and inspect it to determine if it is working properly. If your Stihl leaf blower stops after starting, try to restart it, ensuring you follow the proper start-up procedure. If you see a current, then it is not the pump. When you pull the starter rope, tabs extending from the pulley and cam should grab the hub on the engine, causing the engine to turn. Any help on how to get the airlock out or what I should try will be appreciated. Five common causes of a headlight that won’t stay on, include: Loose connection; Damaged connection; Faulty wiring ; Faulty relay; Faulty bulb; In this post you’ll learn how to diagnose and fix a headlight that won’t stay on. Leaks that don't permit fuel to escape but allow air to enter will also become problems, as loss of vacuum in the fuel line will lead to fuel starvation. There can be many reasons why a 9.9 horsepower Mercury outboard will not activate; e.g. Comment . I have the same problem. First thing to replace is the bulb, right? Smart bulbs acting up? Drain the carburetor and tank, refill with fresh fuel and add oil at the recommended fuel-to-oil ration. by Manage My Life. Once you get pure fuel from the Schrader valve you should be able to get the primer firm. Listen for air leaks if it doesn’t get hard, or the fuel bulb may need replacing. Vented air from the system? Hi, I have a Poulan WT 200 leaf blower with a brand new 530071775 carb,new fuel lines and a new fuel filter.I can't get the primer bulb to fill with fuel.I've tried with the carb attached & unattached to the engine block.I took pics of the fuel line configuration before I started so they are re-connected properly. Topic: Primer bulb won't stay hard (i.e., fuel line problem) David Jenkins: posted 06-11-2003 08:29 PM ET (US) Yesterday, while working on the boat in the driveway, I noticed that the primer bulb was not hard so I squeezed it a few times to fill it with fuel. Car is hard to start Inspection: $79.99 - $89.99: Get a Quote: Jay Safford . Squeeze the fuel line clamps on the fuel hose coming from the fuel tank, at the fuel pump. Solution: A commom problem with the MTX-75 manual transmission is a loose roll pin in the selector mechanism. Still not filling with gas! This post covers both HID and halogen lighting systems. Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. Plugs may look pretty black and fluffy. If the recoil starter assembly is defective, the leaf blower won't start. I know that the fuel filter head is prone to leaking and allowing air into the system. Vimeo,  YouTube,  In modern cars, you have two fuel pumps: the intake and main fuel pumps. I removed and replaced the fuel-water separator (had a … If the snow blower won’t start up, wait an hour or two to allow the fuel stabilizer more time to dissolve residue, and then try again. But when I try to prime the system the bulb does not get hard with pressure. It was not fuel filter, line, or primer! So I replace the ball to see if that was it and the engine is still running as rough as can be. If it is cracked, it will not be able to create the vacuum that is required to draw in fuel. They go flat. The DuraMax is a 6.6 engine. Replace a fuel line that's brittle or damaged. A hole in the fuel line on the tank side could also cause the fuel pump to suck air instead of fuel from the fuel tank. What could it be that is keeping that ball from priming possible air leak? Ford Foucs 1999 and Mondeo upto 2001. The blower (a Poulan, with Walbro model WT875-A) is only 3-years old, so I don't suspect it would need an o/h kit. If the fuel lines are okay but fuel doesn't move through the lines when you press the primer bulb, the fuel filter may be clogged.

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