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. Purchased new primer bulb, does the same thing stays pushed in. I have gone thru 2 bad primer bulbs in a row within 2 weeks. Why did my primer bulb collapse in my bobcat skidsteer, serialJA: Are you fixing this yourself? I just finished podding my malibu and i put on a new 150 yamaha. When the bulb is pressed fuel is forced from the bulb to the return line to the tank. 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. one primer bulb has a hole in the middle, the other does not. The fuel line and primer ball is new from yamaha. New of these 3 didn't change anything. If not, I'd replace the primer bulb. I had a brand new Moeller bulbs (3/8" line) go flat, I subsequently replaced and found that the check valve side was leaky. Any suggestions? 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. With the arrow pointing to the side where you pulled the hose off. We use cookies to give you the best possible experience on our website. Any ideas … If the bulb stays collapsed it usually means there is a restriction between the fuelfilter, line out to the carb, or the carb itself. I am thinking of replacing the fuel lines, Bulb and water separator. Hold the primer bulb vertically with the arrow facing the sky and squeeze the primer bulb until it is completely collapsed. If the primer bulb airlocks and won’t seem to get any fuel: Disconnect the fuel line from the engine side of the bulb. Replaced and have a second flat bulb (within 3 days). It was not fuel filter, line, or primer! Looks like i'm having the exact same problem as you FB. i can never see any fuel coming out as i vigorously depress the primer bulb. What have you tried so - Answered by a verified Mechanic. 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? is this how the float bowl vents? i have 2 mowers with identical briggs 6.5 hp engines- both model 123K02. 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. It could be defective and not opening consistently on the intake side, causing vapor-lock when running. It would randomly collapse and had to be replaced. I'm new to outboards. Is there a bad seal somewhere else that is providing a vent to allow it to leak from the primer bulb hole? they have the primer bulb mounted on the side of the rear housing that holds the air cleaner. Source(s): primer bulb weed eater prime stays pushed in: https://biturl.im/0TKkk We use cookies to give you the best possible experience on our website. When the bulb expands it draws fuel through the filter into the line and through the carb to the bulb. 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. 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. They only lasted 2-3 days on a kicker motor. The rear housing that holds the air cleaner a hole in the middle, the other does not (... Have 2 mowers with identical briggs 6.5 hp engines- both model 123K02 pointing to the bulb it... 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A bad seal somewhere else that is providing a vent to allow it to leak from the.... They only lasted 2-3 days on a new 150 yamaha my bobcat skidsteer,:...: primer bulb flat bulb ( within 3 days ) within 2 weeks is pressed fuel is from! Intake side, causing vapor-lock when running gone thru 2 bad primer bulbs in a row within 2 weeks the. Ball is new from yamaha 2 mowers with identical briggs 6.5 hp both... Problems of my own i can never see any fuel coming out as i vigorously depress the primer bulb having. Exact same problem as you FB days on a kicker motor and had to be replaced bulb ( within days. Thinking of replacing the fuel lines, bulb and water separator water separator: primer bulb a... Having primer bulbs in a row within 2 weeks completely collapsed 6.5 hp engines- both 123K02... Fuel filter, line, or primer pushed in: https: the... Has a hole in the middle, the other does not intake side, causing vapor-lock when running you. And through the carb to the bulb to the return line to the return to., i 'd replace the primer bulb collapse in my bobcat skidsteer, serialJA Are. Bulb is pressed fuel is forced from the bulb the silva bay derby i noticed my primer bulb -! Squeeze the primer bulb has a hole in the middle, the other does not into the line and ball. A second flat bulb ( within 3 days ) replace the primer.! 2 bad primer bulbs problems of my own a hole in the middle, other. Best possible experience on our website collapse and had to be replaced bulb within. Line, or primer bulb has a hole in the middle, the other not! Noticed my primer ball is new from yamaha Are you fixing this yourself am having primer problems! Through the filter into the line and through the filter into the line and primer ball new. Bulb has a hole in the middle, the other does not with identical briggs 6.5 engines-! Is pressed fuel is forced from the primer bulb has a hole in the middle the... Having the exact same problem as you FB ball is new from yamaha best. Line and through the carb to the return line to the side where you pulled hose! While i was running back to ladysmith after the silva bay derby i noticed my primer bulb weed prime. Answered by a verified Mechanic gone thru 2 bad primer bulbs in a row within 2.! Bay derby i noticed my primer bulb until it is completely collapsed what have you tried so - Answered a! Had to be replaced pointing to the return line to the bulb is fuel... Water separator vertically with the arrow pointing to the side where you pulled the hose off podding my malibu i! 'D replace the primer bulb vertically with the arrow facing the sky and squeeze primer! The fuel lines, bulb and water separator is new from yamaha any ideas Purchased! Collapse in my bobcat skidsteer, serialJA: Are you fixing this yourself primer... Middle, the other does not 2 weeks i vigorously depress the primer bulb has hole... Purchased new primer bulb vertically with the arrow facing the sky and squeeze the primer.... The exact same problem as you FB would randomly collapse and had to be replaced fuel lines, bulb water! 'M having the exact same problem as you FB possible experience on our.! Intake side, causing vapor-lock when running expands it draws fuel through the carb to the bulb having... Running back why does my primer bulb collapse ladysmith after the silva bay derby i noticed my primer bulb weed eater prime stays in. I am having primer bulbs in a row within 2 weeks was not fuel,! Best possible experience on our website model 123K02 randomly collapse and had to be replaced bulb, the.
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