Re: Engine stumbles on acceleration
I realize this thread is a bit old but was having the same problem as described and after replacing so many stinking parts I found the problem to be with the fuel flow. Someone had previously used a gasket maker type stuff to try and seal the gas gauge. Little pieces of that had been falling off an partially blocking my fuel flow. I drained the tank. Removed both the valve and fuel lines. Blew everything out with compressed air. Vacuumed what I could out of the tank after letting it sit for a while of course. Put everything back together and it ran great. Then months later started getting a stumble at idle. Got rid of the Tiltson carb and replaced with a Marvel and now it’s purring like a kitten.
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