Stihl 066 overheating

[themechanic]

Hey guys I have an 066 chainsaw pre decompression valve and the bugger is overheating to the point of smoking from under the top cover I know it is not tweaked out,It wont run at a fast idle like it's sucking air it has me stumped thanks.- Daniel Boone :bang: :bang: :bang: :bang: :bang: :bang:

 

[Lakeside53]

Sound like you have it nailed - it has an air leak and is running very lean.. Pull the muffler - you may have already melted the rings into the piston.

Pressure test it...

 

[lovetheoutdoors]

Sound like you have it nailed - it has an air leak and is running very lean.. Pull the muffler - you may have already melted the rings into the piston.

Pressure test it...

that sounds bad...lets hope for the best though.A cylinder and piston are costly.:jawdrop:

 

[lawnmaniac883]

My vote for the leak is the rubber boot connecting carb to engine. I would say top end is now trashed.

 

[CaseyForrest]

If the top end is trashed, I have two used sets for sale, let me know.

 

[Lakeside53]

If the top end is trashed, I have two used sets for sale, let me know.

Casey, we need to to talk... Don't go selling anything half decent unless you want to buy a new one for your current saw! I'll send you an email tomorrow...

Andy

 

[CaseyForrest]

rut roh, sounds like trouble.