JazzDad
Gold Member
This has got me baffled. My JD rider has a PA540A engine in it. It starts very quickly, but then dies after 20 seconds of full throttle running. If I start it then quickly throttle back, it will run for 30 seconds. The fuel tank is not creating a vacuum, because the same symptoms apply if I leave the gas cap off. The fuel shutoff solenoid on the carb is opening, and the float is allowing fuel to flow quite well without the engine running, even through the fuel pump. All the fuel pump baffles/ bellows seem intact and flexing. Nothing seems gummed up in there.
It seems fuel starved to me. Perhaps a fuel line collapsing? I tried dripping gas into the throat of the carb at low speed. It backfired a bit, but still died at the same time (30 seconds)
I have not changed the plug. It just seems too consistent to be the plug heating up and then going bad at the same time, every time.
Replace the fuel lines first (all 5 feet of them)?
Spark plug first?
Remove & thoroughly clean the carb?
Thanks in advance.
Bret
It seems fuel starved to me. Perhaps a fuel line collapsing? I tried dripping gas into the throat of the carb at low speed. It backfired a bit, but still died at the same time (30 seconds)
I have not changed the plug. It just seems too consistent to be the plug heating up and then going bad at the same time, every time.
Replace the fuel lines first (all 5 feet of them)?
Spark plug first?
Remove & thoroughly clean the carb?
Thanks in advance.
Bret