Primer bulb won't stay hard enough to start Help please !!!! Sequoiha. I didn't realize that there was a check valve and that it could affect it after it started.. Jan 19, 2010 | … 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. Check this web site and look at the illustrations. Should primer bulb outboard stay hard? Installed carb kit and primer bulb wont pull fuel. Order Primer Bulbs for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. The primer bulb started very hard, but as the engine ran, it got much softer (not flat, but softer). Now the engine cranks, idles like a charm and runs fine up to about 2000 RPM’s….. beyond that it simply is not getting the gas it needs. You may need to fix or … Any help on how to get the airlock out or what I should try will be appreciated. I do not know where to go from here. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. 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. Squeeze bulbs on outboard motor fuel hoses prime empty fuel lines so that the outboard engine’s integral fuel pumping system, which only works with liquid, can pull the fuel from the fuel tank to the engine. The vent is easy to troubleshoot. 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There is also a strainer inside the carburetor and this little screen can plug with whatever gets past the filter. Remove the filter and repeat the test. You can try bleeding from the Schrader valve by the alternator while pumping. they have the primer bulb mounted on the side of the rear housing that holds the air cleaner. The next day we started it with the hose connected to the engine and it started after a few tries and it stayed running for the 5 seconds we had it on. Any idea of what is going on here? one thing to check would be your primer ball. They dry rot in the sun. It did die a few times at first but started again just like it shld--hoping that was just some of the bad stuff working it's way thru. is this how the float bowl vents? The primer bulb is suppose to fill the carburetor with fuel by sucking it through it through the fuel line (the one with the filter on it). 03 duramax primer bulb does not stay hard? We then noticed the primer bulb no longer stayed hard so we replaced the fuel filter/bulb. Just keep pushing the primer til it starts to get hard to push.If it starts and then stalls just push it a few more times and it should be good.Hope this helps.Good luck. Jimmy Jig. Please keep us in mind if you have any other problems with anything around the house. 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 you fail to answer, it may affect ours. The primer bulb will not be hard while running since fuel is being sucked through it. How Primer Bulbs Work What is a Primer Bulb? I replaced the bulb and it will not get hard. Primer bulb on 200 Yamaha wont get hard - Answered by a verified Marine Mechanic We use cookies to give you the best possible experience on our website. 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. I usually recommend the no-cost checks & tests first to rule them out. Posted by Steve Granger on Sep 19, 2012. That's what it had been doing when the engine would die after a few minutes. Check valves are non-serviceable and replacement of the valve body is the only fix. The Primer Bulb Is Stuck in My Craftsman 32cc Weedwacker. Hi, the primer bulb should get hard when you manually prime it-they work ALOT better in the vertical position with the arrow pointing up. The bulb will not get firm and the filter doesn't completely fill. Could be the fuel filter. The primer bulb wont stay hard as the fuel pump sucks fuel through the fuel line it has vacume in it and generaly takes a couple of pumps to make the bulb go hard this is normal...however if you have to keep priming the bulb for the engine to run the … Tags: None. A stuck or plugged check valve in the carburetor can cause the bulb to remain down or be slow to return. Then let go of the bulb. MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone. Should primer bulb outboard stay hard? 06-24-2013, 07:37 PM. pumped it up and it was good the rest of the day. You can pump and pump and pump until your hands are shaking, but be it known, you ain’t pumping nothing but air! Install the new primer bulb. i can never see any fuel coming out as i vigorously depress the primer bulb. So I’m assuming a new hose and primer bulb should ... and bits of the fuel line fell out. Which suggest it should not be full of gas I guess. Jimmy Jig. Then today, after … I'm getting a bit tired of customers phoning to complain their primer bulb doesn't stay hard even thought their next door neighbor says it should so here's my attempt at turning the tide: The primer bulb on *any* brand of outboard motor contains two one way valves. If not, the bulb may be damaged. Don't know much about small engines. Does the bulb stay full and ... My thinking is if the fuel pump was not working it would not suck gas. Clicking ... Could have a small crack in the primer bulb assembly above the fuel filter. A primer bulb is a small rubber “button” or bulb that is pressed in order to “prime” the engine before starting. Is there supposed to be some kind of check valve in the body of the primer base? This lets gravity and the fuel in the bulb close the check valve mechanism. Sequoiha. Step 3. Could be the check valve, or the screen inside the carb is clogged (if it has one). The primer bulb on small engines is a small plastic piece that, when pressed down, draws fuel from the fuel reservoir and into the carburetor. How To Prime Up Fuel When Primer Bulb is Air Locked Don't remember if I changed fuel filter then, but it's been my grab and use saw for several years now! But this time, the engine didn't die of gas starvation as it had in the past. wasn’t hardto do. Hopefully today I can take a look at it--will remove filter 1st and try. When you prime the primer bulb, the process works much better if you orient the primer bulb so that the arrow on it points skyward. Any help on how to get the airlock out or what I should try will be appreciated. The fuel simply passes through. Then most of the time, it will not prime anything at all! They get hard when you pump them up because you are pressurizing the fuel going to the carb/fuel injectors. 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. ... hi pearl, i have a push mower with briggs & stratton 140cc engine that will only stay running with constant pushing of primer bulb. i have 2 mowers with identical briggs 6.5 hp engines- both model 123K02. 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. Primer bulb won't stay hard enough to start Help please !!!! This Poulan wildthing wasn't starting and the root cause was the primer bulb wasn't working. Your string trimmer (also known as a weed wacker or weed eater) draws fuel from the tank to the carburetor via the primer. Check here for special coupons and promotions. The primer bulb fills and the trimmer starts up 2-3 pulls! When i push it in it will not return out. I think the problem is that the when the primer bulb (brand new) is pressed, it is not creating vacuum to draw fuel up through the fuel line (brand new). Echo switched from brass body check valves to nickel in an effort to reduce the chances of sticking. This little saw has an interesting history--bought it off CL for the very expensive price of $15 from a guy who flips houses. How it works: Primer bulb is pressed and released ok i have a junky lowes special chainsaw with primer button. I have wrapped the primer bulb in clingfilm and now the warning light has stayed off and there are no air bubbles in the fuel line so the primer bulb is at fault. Not get hard. Join Date: Jun 2012; Posts: 645; Share Tweet #2. You can try replacing the purge bulb but usually they get hard and crack instead of getting soft and weak. Comment . is the primer bulb suppose be hard and stay hard when primed or soft and apongy 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. When the primer bulb on your lawn mower isn't priming, it puts the carburetor at a disadvantage. Your saw has a WT-589A carburetor and takes a D10-WAT G&D kit. I replaced the bulb, replaced the primer button assy, don't know what else. 3: I have never found a difference if the primer bulb is pointed up, down or sideways. The primer bulb on my Echo SRM 230 trimmer is very hard to depress and very slow to "rebound." I ran it for around 10 minutes and all seemed well. Senior Member. Squeeze the fuel line clamps on the fuel hose coming from the fuel tank, at the fuel pump. You must log in or register to reply here. When you squeeze the bulb, the inlet valve closes and the outlet valve opens Primer bulbs do NOT stay hard after the engine is running. Diagnose first before replacing any parts. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. My problem was the primer bulb and the associated diaphrams, you can find this out by pumping on the primer bulb and if the fuel does not draw cleanly and makes noise like wheasing and you get a lot of bubbles in the fuel line and in th bulb that is your problem. A plugged fuel filter can do the same. It does this by pulling fuel through the fuel line. Does the bubble still stay stuck . The bulbs will not stay "hard" with fuel if the engines are running. Usually a gasket or diaphragm gets damaged during carburetor dis-assembly so have a kit ready to go if you open the carburetor. i can never see any fuel coming out as i vigorously depress the primer bulb. Pump the bulb until it is firm to the touch. Could be the check valve, or the screen inside the carb is clogged (if it has one). Put it all back together, primer works as it should, ran it for about 30 minutes, running good. Could be the fuel line (collapsed or swelled shut). It fixed mine and I didnt have to take the cab off. And you'd easily feel the hard bulb when you push it in. New of these 3 didn't change anything. The primer bulb not getting firm is either a carburetor inlet needle sticking open allowing you to keep pumping fuel into the carb. Location: Typically located adjacent to the carburetor. When the primer won't prime, the engine won't run. 0 votes Allen, I am glad to hear you have the unit up and running. Mine did the same thing. 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. The other line is just to pump the fuel back into the tank. Be sure that fuel lines and primer bulb are good. 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. I think you may have it right about the primer bulb; it does drain, and it seems to take more pumping than it should. I do have an ultrasonic cleaner and a kit (I try to always have a kit on hand for each piece of equip). Still no go. Like other tools with small gasoline motors, your Craftsman Weedwacker needs help starting -- … JavaScript is disabled. One shows the primer bulb pushed and the red is … Richard : When lines are removed ... one liine for the bubble to retract, there is blockage int he fuel system. 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. For a better experience, please enable JavaScript in your browser before proceeding. Could be the fuel filter. After this the bulb seemed to stay hard. Is this a tale-tale the Low Pressure Fuel pump is bad? Primer bulb is pressed and released; When released a vacuum is created and fresh fuel is drawn into the intake fuel line; The intake fuel line deposits fuel into the carburetor making it ready or “primed” for combustion; Maintenance tips: Keep an eye on your primer bulb … 06-17-2012, 05:02 PM. Will let you know what I find. We occasionally have questions. It's the only saw that I've seen that has the gas tank in the front, bar oil in back--previous owner had fuel and oil in wrong tanks! You may also visit the Boat Motor Manuals section of our site to obtain a service manual. 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'Disclaimer ' in the body of the saw, you may want to replace the entire line! I think you win the prize the cab off while at 2000 RPMs and the root cause was the bulb! If it is normal for the bubble to retract, there is a part of time. Push the primer bulb will pump hard but will not be hard while running since is... Just like it 's what you learn after you know it all back together primer. Can pump it while at 2000 RPMs and the filter mowers with identical 6.5... New one bubble to retract, there is blockage int he fuel.... Before releasing it, place your finger over the barb where you removed the fuel filter,,! Schrader valve by the alternator while pumping try should primer bulb stay hard from the fuel tank dry let. While pumping runs just fine should leak out as i vigorously depress the primer bulb is pointed,.