MTFCA Forum

Happy Holidays everyone. I just pulled the motor and did some work including changing the bands in my 22. Put everything back together and had it running in the garage and everything seemed fine. I took it out for a test drive and made it about a block and it started spitting and sputtering. I made it back home and it died and wouldn't start again. I thought maybe I picked up some junk in the carburetor. I pulled it and cleaned it. It fired right up and ran real smooth. I went for a test drive again and about a block it started spitting and sputtering again. It died and I couldn't get it started again. Any idea where to go?

Give you a couple of questions. Close the valve on the gas sediment bulb. Drain the bulb and then remove screen... Clean or replace.

Probably a fuel flow issue.
Hold a can under the carb drain and let it flow for a while. It should remain a steady flow. I expect it will drop flow to a trickle after a bit.

Bad fuel flow can come from many places. I have seen dirt in every part of the system. I have also seen pinched fuel lines and bad brand new and old parts so careful testing and inspection is required. The most surprising was a bad new shutoff valve that would not flow much.
Mike

Drain the carb bowl and see if you have a good flow of clean fuel.

That spit and sputter is also a symptom of a very lean carburetor mixture.

Mine did that just because I didn't have an air intake funnel attached and frost built up to lean out the mixture until it was froze out.

Also check to make sure the vent hole on your gas cap is clear.

How's your fuel level? With the tank below the seat, sometimes if it gets low, it does not flow very well to the carburetor. Also, with our modern blend of fuel, sometimes if the fuel is more than a few months old it will begin to jell and clog up the line and carburetor input. Try running a wire between the ends of the fuel line to clean it out.
Norm