Stihl 026 Compression Issue

[julian1234]

Hello All, I have a stihl 026 that has some issues with compression.
Piston/Cylinder looks fine, I replaced the rings as well as base gasket.

Reads 95 psi on a compression test and won't start at all

Please help

 

[irhunter]

Have you confirmed the compression tester is good by using it on another running saw?

 

[julian1234]

Have you confirmed the compression tester is good by using it on another running saw?

Hmm... Just tried it on a saw that starts/runs great and it reads 75 psi...

 

[thompsoncustom]

Hmm... Just tried it on a saw that starts/runs great and it reads 75 psi...

Well either that compression tester can't be used or has the wrong shrader valve in it.

Have you checked and made sure you have spark? If so and you have spark spray some mixed fuel down the carb throat and see if it will pop.

 

[julian1234]

Well either that compression tester can't be used or has the wrong shrader valve in it.

Have you checked and made sure you have spark? If so and you have spark spray some mixed fuel down the carb throat and see if it will pop.

Yes, it has perfect spark.
I will try the spraying mix into the carb (do you still have to put choke on when doing this, or does it not matter)

 

[thompsoncustom]

Yes, it has perfect spark.
I will try the spraying mix into the carb (do you still have to put choke on when doing this, or does it not matter)

no need for the choke here but do hold the throttle wide open when you try spraying it through the carb then release and try to start it.

 

[stihltech]

Throw the compression tester away. I do not use them in 40 years of two stroke saws.
Dis you break the glaze on the cylinder so the rings would seat?