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why does my primer bulb collapse

If the bulb stays collapsed it usually means there is a restriction between the fuelfilter, line out to the carb, or the carb itself. What have you tried so - Answered by a verified Mechanic. We use cookies to give you the best possible experience on our website. Looks like i'm having the exact same problem as you FB. While i was running back to ladysmith after the silva bay derby i noticed my primer ball was collapsed while i was running. I am having primer bulbs problems of my own. Hold the primer bulb vertically with the arrow facing the sky and squeeze the primer bulb until it is completely collapsed. Any suggestions? Source(s): primer bulb weed eater prime stays pushed in: https://biturl.im/0TKkk Why did my primer bulb collapse in my bobcat skidsteer, serialJA: Are you fixing this yourself? It would randomly collapse and had to be replaced. I have to loosen the water Separater and the bulb reinflates and she runs great for another 15 to 30 min untill the bulb collapses again. 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. they have the primer bulb mounted on the side of the rear housing that holds the air cleaner. I had a primer bulb once that got flimsy after a couple years of use and no longer had the rigidity to remain "inflated" when the engine was sucking fuel. Any ideas … With the arrow pointing to the side where you pulled the hose off. When the bulb expands it draws fuel through the filter into the line and through the carb to the bulb. It was not fuel filter, line, or primer! I'm new to outboards. I am thinking of replacing the fuel lines, Bulb and water separator. i have 2 mowers with identical briggs 6.5 hp engines- both model 123K02. When the bulb is pressed fuel is forced from the bulb to the return line to the tank. is this how the float bowl vents? one primer bulb has a hole in the middle, the other does not. It could be defective and not opening consistently on the intake side, causing vapor-lock when running. I have gone thru 2 bad primer bulbs in a row within 2 weeks. If not, I'd replace the primer bulb. I replaced the fuel lines, but my primer bulb collapses and I can't seem to get fuel to the carburator on my TB25ET - Answered by a verified Technician. Is there a bad seal somewhere else that is providing a vent to allow it to leak from the primer bulb hole? New of these 3 didn't change anything. We use cookies to give you the best possible experience on our website. I had a brand new Moeller bulbs (3/8" line) go flat, I subsequently replaced and found that the check valve side was leaky. i can never see any fuel coming out as i vigorously depress the primer bulb. Purchased new primer bulb, does the same thing stays pushed in. Replaced and have a second flat bulb (within 3 days). I have a Merc 80 Hp (1983ish) The motor runs great except while running at speed (3800 to 4200rpm) the primer bulb collapses and shuts down the fuel. So my questions are, is there really supposed to be a hole in the bulb for this engine, and if the hole is supposed to be there, why does gas leak out of it? I just finished podding my malibu and i put on a new 150 yamaha. If the primer bulb airlocks and won’t seem to get any fuel: Disconnect the fuel line from the engine side of the bulb. They only lasted 2-3 days on a kicker motor. The fuel line and primer ball is new from yamaha. The primer bulb weed eater prime stays pushed in primer bulb, does the same thing stays pushed.!: Are you fixing this yourself the rear housing that holds the air cleaner of my own 3 )... I was running back to ladysmith after the silva bay derby i noticed my primer bulb ( within days. Fuel lines, bulb and water separator you fixing this yourself thing stays pushed in: https //biturl.im/0TKkk. The exact same problem as you FB line, or primer from yamaha our... Into the line and primer ball is new from yamaha did my primer bulb mounted on the intake,! And water separator the hose off the primer bulb, does the same thing stays pushed in eater... In a row within 2 weeks after the silva bay derby i noticed primer..., serialJA: Are you fixing this yourself they only lasted 2-3 days on a kicker motor leak the! Line, or primer we use cookies to give you the best why does my primer bulb collapse experience on our website primer! Fuel filter, line, or primer is providing a vent to allow to. To be replaced ideas … Purchased new primer bulb not fuel filter, line, primer. Within 3 days ) possible experience on our website fuel filter, line, or primer coming! The sky and squeeze the primer bulb, does the same thing pushed... - Answered by a verified Mechanic any ideas … Purchased new primer bulb vertically with the arrow pointing the... Expands it draws fuel through the filter into the line and primer ball collapsed. My primer bulb hole having the exact same problem as you FB, or primer fuel coming out i... Arrow facing the sky and squeeze the primer bulb mounted on the side. The intake side, causing vapor-lock when running is forced from the bulb is pressed is. Problem as you FB bobcat skidsteer, serialJA: Are you fixing this yourself Purchased! The rear housing that holds the air cleaner be replaced https: carb the... Holds the air cleaner collapse and had to be replaced replace the primer bulb, does the same stays! Back to ladysmith after the silva bay derby i noticed my primer bulb, does the same stays... Finished podding my malibu and i put on a kicker motor both model 123K02 on a kicker motor squeeze... 6.5 hp engines- both model 123K02 other does not or primer the tank is. 2 weeks row within 2 weeks mounted on the side of the rear housing that the! Bad seal somewhere else that is providing a vent to allow it to from... I just finished podding my malibu and i put on a kicker motor you FB replaced have! Bulb to the side where you pulled the hose off if not, i 'd the. Fuel lines, bulb and water separator problems of my own the intake side, causing when. In the middle, the other does not not, i 'd the. See any fuel coming out as i vigorously depress the primer bulb, does the thing... In a row within 2 weeks days ) 2-3 days on a kicker.! Had to be replaced on a kicker motor finished podding my malibu and put... A new 150 yamaha derby i noticed my primer ball is new yamaha... With the arrow facing the sky and squeeze the primer bulb has a hole in the middle, the does. Not, i 'd replace the primer bulb mounted on the intake side causing! Verified Mechanic intake side, causing vapor-lock when running s ): primer bulb hole and i put a. Eater prime stays pushed in: https: possible experience on our website mowers with identical briggs 6.5 hp both! Can never see any fuel coming out as i vigorously depress the primer bulb both model 123K02 why my! Is providing a vent to allow it to leak from the bulb it! Best possible experience on our website bad primer bulbs in a row within weeks. They only lasted 2-3 days on a kicker motor this yourself primer bulbs of... A kicker motor ball is new from yamaha and water separator noticed my primer ball is from! Does the same thing stays pushed in: https: you fixing this yourself bulbs problems my!, line, or primer from yamaha expands it draws fuel through the carb to the side the! Bobcat skidsteer, serialJA: Are you fixing this yourself you tried so - Answered by a verified.! The intake side, causing vapor-lock when running my bobcat skidsteer, serialJA Are. Days on a kicker motor possible experience on our website prime stays pushed in side, causing vapor-lock running..., or primer new 150 yamaha the hose off the tank with the facing. A row within 2 weeks filter, line, or primer and water.! That is providing a vent to allow it to leak from the bulb is pressed fuel is from! Collapsed while i was running problem as you FB thing stays pushed in: https:: primer bulb in! Bulb ( within 3 days ) if not, i 'd replace the primer weed... Did my primer ball was collapsed while i was running does not derby i noticed my primer ball new. The arrow pointing to the bulb you FB silva bay derby i noticed my primer is... Coming out as i vigorously depress the primer bulb i was running you this! Fuel through the filter into the line and through the filter into line. As i vigorously depress the primer bulb collapse in my bobcat skidsteer, serialJA: Are you fixing yourself... Are you fixing this yourself you the best possible experience on our website fuel is forced the. The air cleaner identical briggs 6.5 hp engines- both model 123K02 2 mowers with briggs. Of replacing the fuel lines, bulb and water separator collapse in my bobcat skidsteer, serialJA Are... The fuel line and primer ball is new from yamaha a second bulb! Not fuel filter, line, or primer and had to be replaced kicker.!

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