Stihl ms271 weak spark

[Deleted member 149229]

Guy I used to work with sent me a text. He has a 2014 ms271 that won’t run and “seem to have a weak spark”. Any ideas. Thanks.

 

[HarleyT]

His coil is fine. Tell him to pull the muffler and look at the piston first. He just needs to just pry out the little metal plugs over the 2 screws.

 

[HarleyT]

Most likely, he just has some water in his fuel tank, but it won't hurt or cost anything to look at the piston first.

Have him dump out all of his fuel in a glass jar, and look at the bottom of the liquid, see if it is cloudy.

 

[Deleted member 149229]

Thanks.

 

[Conquistador3]

If he expects to see a nice big blue spark with the spark plugs those saws use, he's going to be seriously disappointed.

Those saws may be plastic clamshells but are tough little buggers. The problem is most likely fuel related, meaning the saw was either straight gassed or was stored filled with old fuel.

 

[Deleted member 149229]

He’s dumber than I am. Maybe I can score a good buy if he wants rid of it.

 

[HarleyT]

Yeah, I have had lots of problem with buyers buying new coils with "weak spark".

 

[HarleyT]

When the new coil doesn't cure their problem, they want a refund saying the new coil is "defective".

 

[Deleted member 149229]

When the new coil doesn't cure their problem, they want a refund saying the new coil is "defective".

I remember you posting a couple times about that now that you mentioned it.

 

[bang]

I have a 311 that flooded easily until I figured out the starting procedure. I also thought it was a weak spark. I had to turn the saw upside down to drain the fuel and clean or replace the plug before it would start.

 

[Deleted member 149229]

Well he text me back after I told him I would pull the muffler and take a look. He said he wasn’t tearing it all apart!! Told you he was dumber than me. Since it ain’t working he would sell it that way for $200!!

 

[Sepia]

Well he text me back after I told him I would pull the muffler and take a look. He said he wasn’t tearing it all apart!! Told you he was dumber than me. Since it ain’t working he would sell it that way for $200!!

 

[Deleted member 149229]

Exactly CJ.

 

[Captain Bruce]

I confused. Weak spark? Its either visible, or none...or so I have experienced over the decades....How does the engines internals affect the creation of a spark?

 

[stihltech]

Magic wand repair.