Tuning issues stihl 066 fresh top end

[scottw99]

Have you replaced the fuel filter? Is the fuel line soft? The fuel line could be collapsing

Filter is new and line is replaced. The small line from the carb to rank is in decent shape, not too soft.

 

[huskihl]

You mentioned pulling the impulse line out further. Maybe it's still not out far enough. There's a groove in it to fit the carb box hole. It's not really adjustable

 

[scottw99]

You mentioned pulling the impulse line out further. Maybe it's still not out far enough. There's a groove in it to fit the carb box hole. It's not really adjustable

That is one possible spot for it still to leak, I don't have means to test that without an adapter. It feels like it's sealing well. What I did to snug it up was pull through the spot that's supposed to sit in the carb box groove one notch. I guess it lets some dirt in there potentially as it's not tight anymore but no other issue than that.

I'll test the saw tomorrow with no spark plug leak and see if the issue persists.

 

[bikemike]

Did the new piston match the original piston that was in the saw? We're the skirts the same near the transfer ports.
Sorry trying to think outside the box

 

[scottw99]

Did the new piston match the original piston that was in the saw? We're the skirts the same near the transfer ports.
Sorry trying to think outside the box

Looks the same to me, and no problem I appreciate it.

 

[scottw99]

She four stroked! No more air leak and metering lever pried up a bit. Thanks all.

 

[scottw99]

 

[ppxstnr]

Had the opposite problem with a 372, wouldnt lean out. Lever was the answer for that too.