I had the soft bulb issue last summer and running problems with a 50hp two stroke, problems as yours. I’d never had real solid bulbs on motors of which I’ve had plenty.
Took the motor in to a really super guy who tested inside and out then grabbed a new hose and bulb from the wall. He chewed my ass for buying hoses and bulbs from fleet farm, Cabelas etc.
His was nearly 80.00, really good quality. That did it. Issues solved.
That thing once pumped up stays as hard as a rock.
I know the new hose/bulb sounds expensive but compared to the other things mentioned here it’s not.
Osky
Yep, same for the fuel line connector at the motor. Had an off-brand that would act like it was clipped on and open to the engine...but it wasn't. The schitty materials or specs were off just enough to give inconsistent attachment. Replaced the cheap connector with an OEM and solved the problem.
