310-8

[Fire_rescue_18 0]

My 310-8 has started surging periodically. I replaced the fuel line thinking that maybe the fuel line was sucking shut. replaced fuel filter and put a nw H10C Champion plug in it. It still surges periodically. I sprayed ether around the carb with it running and it rev's when sprayed around the throttle shaft. It is a little bit wobbly. I Guess my question is how wobbly is too wobbly for a throttle shaft?? and should I just replace the carb or bush the housing??

[Fire_rescue_18 0]

Could the surging be another problem???

[Duvall 0]

Any bit of wobbling from the throttle shaft can cause an air leak and could make the engine surge.

That would be the first place I would start.

[Fire_rescue_18 0]

I fixed the problem with an inine electric fuel pump. I put a see through filter inlin and could see thatit was running out offuelmaking it bog down. I ordered some throttle shaft bushings and will do that next.

[Fire_rescue_18 0]

I guess I need to learn how to type and or proof-read!! :thumbs2:

[Duvall 0]

Be careful with an electric fuel pump.

The needle and seat in the carb are not good for much more than 5 or 6 psi

If you start getting a flooding problem you will know why.

[Fire_rescue_18 0]

It is a 4-6 psi pump for small engines but thanks for the advice just incase I had not known or maybe someone else would have used a higher volume pump. What I don't like is that it is a magneto engine so I had to put it on a toggle switch rather than the coil. I was unable to find a wire that was hot when only the key was on.