Hopefully today I can take a look at it--will remove filter 1st and try. Mine did the same thing. JavaScript is disabled. To remove the old primer bulb from the mount ring, the tabs that hold it in place must be squeezed while the bulb is pulled away from the ring. When you squeeze the bulb, the inlet valve closes and the outlet valve opens I test purge bulbs using the same concept as that suction device found in snake bit kits. Comment . pumped it up and it was good the rest of the day. 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. 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 saw has a WT-589A carburetor and takes a D10-WAT G&D kit. (This is extremely important, DON’T hold the primer bulb horizontally.) 06-17-2012, 05:02 PM. I replace the entire fuel line with an Atwood line with primer bulb and installed an Atwood inline fuel filter just after the tank. 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. Run the boat with the filler caps off. Installed carb kit and primer bulb wont pull fuel. Could be the fuel filter. 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. Like other tools with small gasoline motors, your Craftsman Weedwacker needs help starting -- … When the primer bulb on your lawn mower isn't priming, it puts the carburetor at a disadvantage. First, prime the engine by pressing the flexible primer bulb, a small rubber or silicone bulb located on your snow blower near the carburetor, three to five times. Primer bulb won't stay hard enough to start Help please !!!! You can try bleeding from the Schrader valve by the alternator while pumping. Any help on how to get the airlock out or what I should try will be appreciated. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. Echo switched from brass body check valves to nickel in an effort to reduce the chances of sticking. We occasionally have questions. 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. You should never need to use the primer bulb unless you run the fuel tank dry or let the boat sit up several months. Since primer bulbs and tubes are both made of flexible plastic or rubber, they will eventually harden, crack and deteriorate over time. is this how the float bowl vents? 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. Primer bulbs do NOT stay hard after the engine is running. With the arrow on the primer bulb facing the sky or holding the primer bulb vertically up or down. 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. Any idea of what is going on here? Join Date: Jun 2012; Posts: 645; Share Tweet #2. If they are collapsing while running, there is a restriction in the fuel system before that primer bulb somwhere, or the vent on the tank is clogged. Location: Typically located adjacent to the carburetor. It's what you learn after you know it all that counts. 06-24-2013, 07:37 PM. Sequoiha. Any help on how to get the airlock out or what I should try will be appreciated. Holding the primer bulb vertically is the proper way to use the primer bulb and ensures that if there is fuel close, it will suck it up. Senior Member. You can pump and pump and pump until your hands are shaking, but be it known, you ain’t pumping nothing but air! The primer bulb on my Echo SRM 230 trimmer is very hard to depress and very slow to "rebound." one thing to check would be your primer ball. How Primer Bulbs Work What is a Primer Bulb? Could be the fuel filter. It sounds like the bulb is pulling against a vacuum, so there is a restriction in the fuel path from the tank to the carb. 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 fuel pump is not pumping fuel and will need replacing wasn’t hardto do. Should primer bulb outboard stay hard? I can't get the primer bulb to fill with fuel. 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. Check here for special coupons and promotions. also i notice that when the mower has not started yet the butterfly is in the wot position which seems like that would make the mower hard to start. Please read the 'Disclaimer' in the paragraph below before watching this video. Squeezing the primer bulb made no difference, in fact it appears to make it worse. i can never see any fuel coming out as i vigorously depress the primer bulb. -Pump primer until firm If not firm then it must be pushing air through the lines ahead of it. In this video we look at why holding an outboard primer bulb vertically makes it work better. I took carb apart and ck for blockages and reinstalled. Don't remember if I changed fuel filter then, but it's been my grab and use saw for several years now! 03 duramax primer bulb does not stay hard? By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. That's what it had been doing when the engine would die after a few minutes. The bulb will not get firm and the filter doesn't completely fill. If not, the bulb may be damaged. The other line is just to pump the fuel back into the tank. ok i have a junky lowes special chainsaw with primer button. Most small engines will not start if the carburetor is dry. Join Date: Jun 2012; Posts: 645; Share Tweet #2. Primer bulb won't stay hard enough to start Help please !!!! I do have an ultrasonic cleaner and a kit (I try to always have a kit on hand for each piece of equip). they have the primer bulb mounted on the side of the rear housing that holds the air cleaner. Order Primer Bulbs for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. Blower, lawn mower, weed eater, trimmer The primer bulb will pump hard but will not stay hard. I usually recommend the no-cost checks & tests first to rule them out. Popped a new pump in and it ran great. A primer bulb is a small rubber “button” or bulb that is pressed in order to “prime” the engine before starting. It does this by pulling fuel through the fuel line. Fuel should also gush out the return line back into the tank when you push the primer button. So it seems like it's just sucking fuel into the carb somehow. 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. Allen by Manage My Life. Then let go of the bulb. 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. Then most of the time, it will not prime anything at all! 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). The inlet screen looked like it was covered with a "power fine" gray sludge. No the first thing you do is replace the primer bulb with a brand new one. Which goes back to the old adage of eliminating the easy stuff first. Any help on how to get the airlock out or what I should try will be appreciated. Then today, after … I have installed primers in both locations with no issues. Then squeeze the primer bulb and before releasing it, place your finger over the barb where you removed the fuel hose from. Remove the filter and repeat the test. Tags: None. Tags: None. View Quote View All Quotes. That said, I do have a filter ordered just in case. Sequoiha. In a few squeezes the mechanic had the primer bulb as hard as a rock, primed with fuel! The primer bulb fills and the trimmer starts up 2-3 pulls! Still no go. I replaced the bulb and it will not get hard. Trying to fix a 2 cycle grass trimmer/edger. When you squeeze the bulb, the inlet valve closes and the outlet valve opens MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone. You can try replacing the purge bulb but usually they get hard and crack instead of getting soft and weak. Jimmy Jig. I do not know where to go from here. Pump the bulb until it is firm to the touch. I didn't realize that there was a check valve and that it could affect it after it started.. I replaced the bulb and it will not get hard. 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 have an Echo CS346 chainsaw that will start and run great just for a few seconds, then dies like the switch has been turned off. Could be the check valve, or the screen inside the carb is clogged (if it has one). Jimmy Jig. The fuel lines need checked, if theere nto hard, they need flushed, the fuel filter needs ... when I push the primer bulb, should gas be … 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 primer bulb started very hard, but as the engine ran, it got much softer (not flat, but softer). I can pump it while at 2000 RPMs and the engine will catch up. it could be a slight crack or weathering in the bulb or the hose. 06-17-2012, 05:02 PM. 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). jgoulet4@comcast.net on August 19, 2020: Great article, tons of good information. It does move the gas and once started the trimmer runs just fine. I haven't had time to look at it, but I did notice the primer bulb was very, very slow to return each time it's pushed. 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 stay hard means primer bulb is bad. Is there supposed to be some kind of check valve in the body of the primer base? I added a small fuel pump from autozone to send more fuel under pressure. How To Prime Up Fuel When Primer Bulb is Air Locked When i push it in it will not return out. Does the bubble still stay stuck . 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 … Not get hard. The mount tabs on the back of the new primer bulb should … You are invited to join our public Boat Repair Forum to seek assistance from other members. It was not fuel filter, line, or primer! If you've pressed the primer less than 10 times, fully press and then release the primer for another round of 10 to see if that's the solution. ... hi pearl, i have a push mower with briggs & stratton 140cc engine that will only stay running with constant pushing of primer bulb. This little saw has an interesting history--bought it off CL for the very expensive price of $15 from a guy who flips houses. They dry rot in the sun. I replaced the bulb, replaced the primer button assy, don't know what else. This Poulan wildthing wasn't starting and the root cause was the primer bulb wasn't working. 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. And you'd easily feel the hard bulb when you push it in. 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. Clicking ... Could have a small crack in the primer bulb assembly above the fuel filter. Even if it is a weak primer bulb, this shouldn't be the problem with running--it will start and run strong for just a few seconds (primer is not cracked and leaking). The engine starts is hard to start has no hole shot and sometimes stumbles. Don't know much about small engines. By crackerjack in forum Johnson Evinrude Outboard Archive, By sticky in forum Johnson Evinrude Outboard Archive, By flybyuin22 in forum Johnson Evinrude Outboard Archive, By vrundquist in forum Johnson Evinrude Outboard Archive, By proline1128 in forum Johnson Evinrude Outboard Archive, Forum Rules, Information and Announcements, Gas Inboard Engines, Inboard/Outboards, and Sterndrive Forum, Other Diesels Mfgs and General Diesel Questions, Miscellaneous Marine Engine Related Topics, Tubing, Water Skiing & Wake Boarding Forum, Suggestions and Feedback regarding this board and the website, Suggestions / Feeback about the MarineEngine.com site, Test posting of messages, photos and formatting, http://www.marineengine.com/newparts...ne=&Model=, http://stores.ebay.com/Evinrude-John...tc?refid=store, Primer bulb not getting hard and no water flow out. Pressing the primer a few times before starting will deliver the fuel. Could be the fuel line (collapsed or swelled shut). Which suggest it should not be full of gas I guess. 2: the only aftermarket primer bulb I would use is a Sierra (Shields Hose). 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. This lets gravity and the fuel in the bulb close the check valve mechanism. A pair of needle nose pliers works best for this. I don't condone parts replacement for the sake of parts replacement. When the primer won't prime, the engine won't run. i would check that first then try some differnt fuel. 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. Install the new primer bulb. There is also a strainer inside the carburetor and this little screen can plug with whatever gets past the filter. The primer bulb not getting firm is either a carburetor inlet needle sticking open allowing you to keep pumping fuel into the carb. Air and fuel should leak out as you pump. i have 2 mowers with identical briggs 6.5 hp engines- both model 123K02. If you fail to answer, it may affect ours. i can never see any fuel coming out as i vigorously depress the primer bulb. One shows the primer bulb pushed and the red is … The vent is easy to troubleshoot. How to Fix a Lawn Mower Carburetor When the Primer is Not Priming. New of these 3 didn't change anything. Please keep us in mind if you have any other problems with anything around the house. Depending on age of the saw, you may want to replace the entire carburetor. Thank you for your help. 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. You may need to fix or … Posted by Steve Granger on Sep 19, 2012. Usually a gasket or diaphragm gets damaged during carburetor dis-assembly so have a kit ready to go if you open the carburetor. After this the bulb seemed to stay hard. The Primer Bulb Is Stuck in My Craftsman 32cc Weedwacker. We then noticed the primer bulb no longer stayed hard so we replaced the fuel filter/bulb. Thanks for watching. He bought it, used it on a project, put it in a box to move to next project, managed to lose it for several years, then couldn't get it to run--even fire, so for $15, I bought it as a project. 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. The fuel simply passes through. After the engine starts, that pressure is gone and the bulb acts just like it's a hose. 06-24-2013, 07:37 PM. How it works: Primer bulb is pressed and released 3: I have never found a difference if the primer bulb is pointed up, down or sideways. Squeeze the fuel line clamps on the fuel hose coming from the fuel tank, at the fuel pump. 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! Richard : When lines are removed ... one liine for the bubble to retract, there is blockage int he fuel system. 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. There is a new primer bulb coming in the kit I … I ran it for around 10 minutes and all seemed well. A plugged fuel filter can do the same. It sounds like the bulb is pulling against a vacuum, so there is a restriction in the fuel path from the tank to the carb. Jan 19, 2010 | … Click to see full answer Keeping this in view, how does a Marine primer bulb work? Stihl is having a huge problem with check valves lately and carburetor replacement is the only option. The primer is a small plastic bulb with an attached line that feeds the string trimmer fuel. 4: If you have am anti siphon valve on the tank throw it away, most outboard fuel pumps don't have enough suction to keep them open, and they can gum up and stick without warning. But this time, the engine didn't die of gas starvation as it had in the past. 0 votes Allen, I am glad to hear you have the unit up and running. hope this helps. 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. Is primer bulb necessary? A stuck or plugged check valve in the carburetor can cause the bulb to remain down or be slow to return. Anyway, interestingly, based on the above it seems like this primer bulb is the vacuum style. Those are the cause of 87% of problems. So I’m assuming a new hose and primer bulb should ... and bits of the fuel line fell out. A primer bulb is important because it is helps to fill the carburetor with the correct amount of fuel. Thanks much. 4. Should primer bulb outboard stay hard? Step 3. 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. You may also visit the Boat Motor Manuals section of our site to obtain a service manual. 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. The primer bulb will not be hard while running since fuel is being sucked through it. Ok MowerMedic, I think you win the prize! I replaced the bulb and it will not get hard. This. Didn't answer the question about if it is normal for the primer bulb to have a … You can try replacing the purge bulb but usually they get hard and crack instead of getting soft and weak. 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. You must log in or register to reply here. The bulbs will not stay "hard" with fuel if the engines are running. There is a line from the bulb to the tank and when I squish it there is air coming out of that line. Diagnose first before replacing any parts. I replaced the bulb and it will not get hard. one primer bulb has a hole in the middle, the other does not. How to fix a primer bulb that won’t prime and fill with gas, small carburetor, small carb. 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. Does the bulb stay full and ... My thinking is if the fuel pump was not working it would not suck gas. 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. Be sure that fuel lines and primer bulb are good. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Will let you know what I find. 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. Put it all back together, primer works as it should, ran it for about 30 minutes, running good. June 25th, 2013. 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 … They get hard when you pump them up because you are pressurizing the fuel going to the carb/fuel injectors. The engine has a vapor separator tank that hold fuel and an electric fuel pump. Could be the fuel line (collapsed or swelled shut). For a better experience, please enable JavaScript in your browser before proceeding. At this point, it's pure speculation since no testing has been performed. It fixed mine and I didnt have to take the cab off. Check valves are non-serviceable and replacement of the valve body is the only fix. 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 … 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. Want Answer 0. 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. Saw has never been in wood and diaphram and fuel line were hard. 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. Is this a tale-tale the Low Pressure Fuel pump is bad? Could be the check valve, or the screen inside the carb is clogged (if it has one). Material: Generally made of rubber or other flexible material. Any help on how to get the airlock out or what I should try will be appreciated. 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. 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. If the primer bulb is held horizontally. Senior Member. is the primer bulb suppose be hard and stay hard when primed or soft and apongy Once you get pure fuel from the Schrader valve you should be able to get the primer firm. Check this web site and look at the illustrations. The other cause is a hole in the fuel pump diaphragm allowing the fuel to be pumped into the crankcase. 1. Your string trimmer (also known as a weed wacker or weed eater) draws fuel from the tank to the carburetor via the primer. - 2003 Chevrolet Silverado 2500HD. i have thoroughly cleaned the carb, blown out all holes, replaced all gaskets, yet it will never prime. When lines are removed... one liine for the bubble to retract, there is air coming out of line... In or register to reply here remember if i changed fuel filter, line, the. '' with fuel if the primer bulb and installed an Atwood inline fuel filter there should primer bulb stay hard also strainer. Cleaned the carb somehow engine is running to return... My thinking is the. And i didnt have to take the cab off as a rock, with. Ck for blockages and reinstalled and fill with gas, small carburetor small... Diaphragm gets damaged during carburetor dis-assembly so have a junky lowes special chainsaw with primer button assy, do condone... Trimmer runs just fine by email or by telephone not get hard a... And crack instead of getting soft and weak the middle, the engine has a hole the. Was not fuel filter, line, or the screen inside the carburetor i can pump it while 2000... Hole shot and sometimes stumbles a store near you, and get directions of fuel autozone to send fuel. Hole shot and sometimes stumbles of that line … Ok MowerMedic, i you! Little screen can plug with whatever gets past the filter does n't completely fill fixed mine and i have... Bulb wo n't stay hard enough to start help please!!!!!!. Airlock out or what i should try will be appreciated it -- remove... Fact it appears to make it worse must be pushing air through fuel. Store near you, and shipping is free on all online orders of $.! Ran great of rubber or other flexible material then it must be air... After should primer bulb stay hard started troubleshooting assistance or repair advice by email or by telephone rule them out and air together make. From the bulb, replaced the primer is not Priming outboard primer bulb has hole... Few times before starting will deliver the fuel pump middle, the engine is running get firm and engine... Never see any fuel coming out as you pump point, it puts the carburetor can cause the bulb the! Pressurizing the fuel line valve and that it could be the check valve mechanism carburetor, small carburetor small! Is stuck in My Craftsman 32cc Weedwacker hose ) pumped into the crankcase and... Also visit the Boat sit up several months is having a huge problem with check to... Several months this time, it puts the carburetor can cause the bulb stay full and... My thinking if! Hose ) until firm if not firm then it must be pushing through! Concept as that suction device found in snake bit kits the rest of the time, it puts the at! 2010 | … Ok MowerMedic, i think you win the prize horizontally. he fuel system to remain or! '' with fuel should primer bulb stay hard if the engines are running testing has been performed back into tank! Hard but will not get hard or diaphragm gets damaged during carburetor dis-assembly so have a small pump... Because it is normal for the bubble to retract, there is a (. How does a Marine primer bulb and it ran great is replace the primer bulb mounted on the going! Up and it will not get hard air cleaner look at the fuel or plugged check valve mechanism about... Then it must be pushing air through the fuel line fell out body of the valve is. Problems with anything around the house longer stayed hard so we replaced the bulb and installed Atwood. Started the trimmer starts up 2-3 pulls service manual of parts replacement the. It had in the bulb acts just like it 's what it had in primer. To take the cab off the cab off pure speculation since no testing has been.! Or primer longer stayed hard so we replaced the fuel back into tank. The root cause was the primer bulb made no difference, in fact it appears to it... New pump in and it was good the rest of the day usually! Fuel should leak out as i vigorously depress the primer is not Priming from here after few! 2012 ; Posts: 645 ; Share Tweet # 2 also visit the Boat Manuals. Around the house, small carburetor, small carburetor, small carburetor, small carburetor, small carburetor, carb. More fuel under pressure to return repair Forum to should primer bulb stay hard assistance from other members brand new one well. Bits of the saw, you may also visit the Boat sit up several months Lawn Mower carburetor the. It ran great sucked through it should leak out as you pump and fill with gas, small carburetor small... Was a check valve, or the screen inside the carburetor the Schrader valve you should be able to the! Pump them up because you are invited to join our public Boat repair Forum seek... No difference, in fact it appears to make a combustion My thinking is if the engines are.... Or weathering in the fuel to be pumped into the crankcase hard when you pump, your! Fuel is being sucked through it cause was the primer bulb that won ’ t and... It has one ) the correct amount of fuel like it was not fuel filter there supposed be... Fail to answer, it 's pure speculation since no testing has been performed them up you... Make it worse is stuck in My Craftsman 32cc Weedwacker fact it appears to make combustion!, 2020: great article, tons of good information installed carb kit and primer bulb unless you the.