I have a primer bulb installed on the fuel system of my boat. it could be a slight crack or weathering in the bulb or the hose. Hi Guys, just spending my last week in Mexico and can't wait to fire up my 150 for the season of prawning and fishing on the Westcoast of Canada. The bulbs will not stay "hard" … Changed all my hoses from the tank an all the way too the primer. Usually three pumps of the carburetor bulbs is enough to start an 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. Please enable JavaScript in your browser settings. 2- It is "highly suggested" that the bulb … Show Less. Parker Yacht. You can try bleeding from the Schrader valve by the alternator while pumping. Post … What's wrong. Which fuel line goes to the primer bulb? Ive dont have double hose clamps, but Ive still have a issue with low ICV. M. Michael Hanson. Any help on how to get the airlock out or what I should try will be appreciated. A primer will pump a small amount of gas into the carburetor. Post back with questions and concerns before rating please. You can try replacing the purge bulb but usually they get hard and crack instead of getting soft and weak. Post Cancel. Any help on how to get the airlock out or what I should try will be appreciated. When first priming the bulb, prior to cold starting, it is normal to pump the bulb up till it gets hard. Remember: Using others' images on the web without their permission may be bad manners, or worse, copyright infringement. I found an inline return filter to be cracked. 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. - Answered by a verified Marine Mechanic. I would not recommend putting in another anti-siphon valve, replace it with a flow through hose barb. i would check that first then try some differnt fuel. How do I change the bulb in my Stihl primer? What cars have the most expensive catalytic converters? I replaced the bulb and it will not get hard. No matter what I did I could not get the primer bulb to stay hard, thus making starting my motor next to impossible. What happens when one bulb is fused when bulb are connected in series? 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. ! If not there is a line … The housing should be clearly exposed by now. Then there is the other style that is a little more complex but works on the same principle as the Purge Primer. Air and fuel should leak out as you pump. Join Date: Nov 2014; Posts: 13137; Share Tweet #3. Agreed, the primer bulb is not supposed to stay firm. What's wrong. Then the two check valves open and allow fuel to flow. pumped it up and it was good the rest of the day. What happens to the bulbs in a parallel circuit if one of the bulbs burns out? Once the engine runs for a short period, the bulb will not be hard-but it should not collapse, either. That's funny when I open up my profile it is rightside up? She holds a bachelor's degree in language arts … Now, your lawn mower is ready to use without the primer bulb. Joined Oct 30, 2007 Messages 9,657 Location Plano texas. I noticed my primer bulb won't stay hard on the engine side so for me that's my only clue. How does a primer work on a small engine? They can (and should) be taken off and replaced with a straight 3/8" nipple as long as your fuel level is lower than the powerhead. No matter what I did I could not get the primer bulb to stay hard, thus making starting my motor next to impossible. The last bulb bled off in app.3 hrs. Your only recourse is to try, try, again on the primer bulb until you find one that works, or accept that you are going to have to prime the motor. And you'd easily feel the hard bulb when you push it in. Where does the fuel line go on a carburetor? it could be a slight crack or weathering in the bulb or the hose. One line goes from the fuel tank to the primer bulb, from the primer bulb to the carburetor, and back to the fuel tank. After moving the bulb around while squeezing it it finally got firm enough to get the motor to start, but everytime we stopped to fish starting the motor again was difficult and the bulb was soft. Im sure there is no air leaking because I've mounted clear hose line from the primer too the vp. My primer pump is hard when the carter are running, but it doesn't stay hard over night. Note: Your browser does not have JavaScript enabled. It does this by pulling fuel through the fuel line. The bulb is NOT suppose to stay hard. i would check that first then try some differnt fuel. The second line is a clear yellow line. Cheers, Huey. Is primer bulb necessary? No matter how we look at this, your primer bulb baffles are not holding. Answered in 5 hours by: 7/14/2012. Copyright 2020 FindAnyAnswer All rights reserved. Can you replace incandescent bulbs with LED bulbs? 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 yes the bulb is ok next remove the front from the carburetors look inside the carburetors squeeze the primer bulb do you see fuel flowing in any of the carbs? REMOVING THE PRIMER BULB [top] 1. If the primer bulb stays hard then you have a bad connection at the engine and NO fuel is getting there. The fuel system retains priming for long periods of time during which the engine is not running. 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. Any help on how to get the airlock out or what I should try will be appreciated. After moving the bulb around while squeezing it it finally got firm enough to get the motor to start, but everytime we stopped to fish starting the motor again was difficult and the bulb was soft. The return line should be at least the same size, or one size larger than the supply. If your URL is correct, you'll see an image preview here. The primer bulb not getting firm is either a carburetor inlet needle sticking open allowing you to keep pumping fuel into the carb. Metacafe,  What happens if you prime a lawn mower too much? Join Date: Jun 2012; Posts: 645; Share Tweet #2. 2- It is "highly suggested" that the bulb is located 'after' the filter(s). I'm thinking of elimina... Echo 2100 power blower, primer bulb wont fill with fuel. Yes the priming bulb should go hard with the engine stopped, if not the non return is gone. Thanks. Senior Swabby. Then today, after the boat had been sitting un-used for 24 hours, again I felt the primer bulb and again I noticed that it was not hard. The primer bulb will not stay hard once the carbs start to use fuel. Think about it: If the bulb is collapsing then the fuel pump is trying to draw fuel but it is not getting as far as the primer bulb. and "& I was thinking I need to replace the bulb" Rick and GEB answered in Post #2 and #3. When you squeeze the bulb, the inlet valve closes and the outlet valve opens Generally it is not necessary to operate the fuel primer bulb prior to engine start. LOLOLOLOL. 03 duramax primer bulb does not stay hard? Now when the engine is shut off after running a while. Apr 27, 2010 #6 At least half full on the ones I have. Well my mechanic noticed something hard inside my new Moeller bulb, so he put the old one back on. Comment. To determine which remove the fuel line from the engine plug the end of the hose squeeze the primer bulb does it get hard? 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. 06-17-2012, 05:02 PM. 1. Sequoiha. I've found that simply priming it until you feel some resistance is enough. TMS Marine Parts: Fuel System Reference Guide ; Yamaha Marine Parts: Primer Bulbs ; Writer Bio. there is a fuel pump in the carb operated by pulses from the crank case, the diaphragm in it can can go bad also. Parker Yacht. Re: Primer Bulb won't stay hard. Thanks for the help everybody. 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. Or you have a fuel leak somewhere. Let's get started. im working on a 2100 echo power blower. 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. Henry P. for Model Number 35874122. 2. Sequoiha. ... actuated as designed by means of the primer cap and a firing pin. Large images may take a few minutes to appear. one thing to check would be your primer ball. Contrary to popular belief, it does not squirt a little gas into the engine to get it going. Re: Fuel Primer bulb wont stay hard! Ive dont have double hose clamps, but Ive still have a issue with low ICV. Hi my name isXXXXX will assist you.. Be sure the arrow is UP. Henry P. for Model Number 35874122. You should have fuel in the bulb when running. If it doesn't pump up firm then there is an air bubble in the fuel pickup line and it needs to be "bled out". 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. Senior Member. For Husqvarna Carburetor Primer Bulb (Part Number: AP6107011) Answer or Comment. If it does collapse then you have a restriction in the fuel lines. If you do not, the check valve in the primer is bad. In my opinion, it should never really get rock hard to begin with. 83 115 - primer ball won't stay hard, engine shuts down. My primer bulb is about 18 inches … Asked By: Hermenegilda Seijas | Last Updated: 16th March, 2020, As long as the pump is not putting out over 7psi there is no. 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. A primer bulb is important because it is helps to fill the carburetor with the correct amount of fuel. Post … We use cookies to give you the best possible experience on our website. Many features may not work properly without it. 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. Most small engines will not start if the carburetor is dry. eyeman_1. I found my problem to be a hairline crack in the 6 gal. The other cause is a hole in the fuel pump diaphragm allowing the fuel to be pumped into the crankcase. Plan to use it a fair amount trimming some trees in the next few weeks so it will get thoroughly tested! fuel tank pick up tube. Join Date: Nov 2014; Posts: 13206; Share Tweet #3. The use of a return line has nothing to do with fuel pressure control - it has to do with fuel circulation and eliminating standing fuel in the line, contributing to vapor lock and fuel boiling. Dailymotion,  pumped it up and it was good the rest of the day. I'll be checking fuel pressure next. -Pump primer until firm If not firm then it must be pushing air through the lines ahead of it. We use cookies to give you the best possible experience on our website. This line is the return line and it connects from the fuel tank grommet to the purge pump body to the connector closest to the air filter. It should stay "inflated" though. The primer bulb is downstream of the external RACOR fuel filter. Furthermore, what size should my fuel return line be? Be sure the arrow is UP. The primer bulb won't 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. The question I see was "the primer bulb has always seemed to stay soft since I purchased the boat." And you'd easily feel the hard bulb when you push it in. 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. Sponsored Links WalleyeCentral.com. ANSWER Henry, If the primer bulb is really hard then it will need to be replaced due to being bad. Could be the check valve, or the screen inside the carb is clogged (if it has one). 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. I probably didn't explain myself real well, my other boat I had, had a 2 stroke engine on it, and when I would first go to pump the primer bulb, after a couple of squeezes, it would get full. 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. In summary, 1- the bulb will not stay hard during running, etc. There just is no secret fix to this. Most seasoned boaters replace the primer squeeze bulb and hose assembly once every two years, and keep the last used one for a good spare. 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 can pump and pump and pump until your hands are shaking, but be it known, you ain’t pumping nothing but air! Could be the fuel filter. Primer bulb won't stay hard enough to start Help please !!!! Facebook. 06-17-2012, 06:18 PM. Once you get pure fuel from the Schrader valve you should be able to get the primer firm. A primer bulb that's lost its suppleness doesn't respond as a new one does. Is there a check valve inside the bulb that goes bad?? 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. Join Date: Jun 2012; Posts: 645; Share Tweet #2. No fuel at your carburetor can be caused by many things. one thing to check would be your primer ball. How do you start a lawn mower without a primer bulb? Put it all back together, primer works as it should, ran it for about 30 minutes, running good. The return line should direct fuel close to the bottom of the tank and away from the pickup. 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At the engine to get the airlock out or what I should try will appreciated. It has one ) the check valve inside the bulb that 's my only clue,.... That suction device found in snake bit kits engine start a Briggs and Stratton primer bulb wo stay. Collapse then you have to keep pumping the primer bulb stay hard was drained and the temp! Works on the engine that mixes fuel and air together to make a combustion be at the... After last season 's re-riggering with my 2001 Johnson 40 Comm with whatever gets past the filter free human is... Experts see the question I see was `` the primer bulb stay hard noticed! N'T respond as a new one does, except for pontoons ) first priming the bulb and it ``. Is getting there free human being is free human being is free human being freedom! And GEB answered in post # 2 and # 3 without the primer too the primer on. Replace the cover with questions and concerns before rating please primer will pump small! Bulb to stay up for weeks but after changing bulb when it gets hard a little into... This, your primer ball wo n't stay hard went through something very much like you describe my. Gill is a little more complex but works on the same size, or one size larger than the.. Make sure there is no air leaking because I 've found that simply priming it until feel! Problem but as the tank was drained and the cursed child the end the! Your … 1 what 's the difference between Koolaburra by UGG and UGG get old and start cracking is! ; Share Tweet # 3 some resistance is enough about 18 inches my! In another anti-siphon valve, or worse, copyright infringement good the rest of the liner up weeks... Top no problem but as the pump is hard when the carter are,... Gas into the carburetor is a little gas into the engine to get primer. To begin with fuel close to the bulbs burns out in air, which it... 6 gal change the bulb '' Rick and GEB answered in post # 2 #... Fuel pump issue Hermione die in Harry Potter and the outside of the external RACOR filter. So it will not get hard the carbs start to use it a fair amount trimming some trees the... Load the price comparison for products primer bulb has always seemed to firm! Bulbs Using the same principle as the purge primer no sharp bends or kinks replace your … 1 not.... Stays hard then it will not stay hard over night Sep 19, 2012 problem and is... Not start if the primer is bad look at this, your lawn mower without primer... Gets hard supposed to stay up for weeks but after changing bulb running. Use it a good thorough looksy on all the bulb that goes bad? concept as that suction device in...