• Yerf Dog Scout - idles but won't accelerate

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 #12845  by dhwooda1
 Wed Sep 19, 2018 3:31 pm
My Yerf Dog Scout with a 150 cc engine was running fine and then I stopped for 5 minutes and when I restarted it would idle but not accelerate . Step on the gas and it stalls. Tried new plug and bought a new carburator and still have the same problem. Engine compression is 70 psi and checked for vacuum leaks to no avail. Again it idles but will not rev up.


The new carb did have an additional vacuum port that the old one didn't have. The old carb used vacuum off the intake manifold to run fuel pump. online show adding a tee and using both ports for vacuum. I have not done that but it runs the same as with the old carb.

What do I try next?