Stihl MS271 high revs then stalls

[pleasant]

by 'adding' choke you are adding fuel, so manually overcompensating for a weak oil/fuel ratio. So, yes quite possibly an air leak.

 

 

Same situation with machines that have been left for sometime with old mix in the system. Will start on choke- stalls as choke comes off. Indicates a 'blockage' in the carb, so enrichening artificially with the choke will overcome it

Edited January 13, 2023 by pleasant

[Dan Maynard]

On 13/01/2023 at 09:41, M4cc4s said:

thanks, so am i looking around where the carb is seated

Maybe, or crank seals. It wants a pressure/vacuum test ideally, then you know if that's what you are looking for.

[Stubby]

55 minutes ago, jonconner said:

Most Common stihl ms 271 problems are

hard to start

smoking

bad ignition

chain brake issue

stalls

Mmmm . I have heard that people can break their leg when they fall over .

Edited April 8, 2023 by Stubby