1999 Suzuki DT150 compression

[Pzandstra]

I have a 1999 DT150 2 stroke. I was curious if anyone knew what the compression should be? All 6 of my cylinders came back between 102 and 110 and I'm not sure if that's ok or not.

 

[robert graham]

Sounds fine to me....rule of thumb is all cylinders should be within 10% of each other on compression. You could probably squirt some oil in each cylinder and run the test again and readings might increase. I doubt you have a problem.

 

[Pzandstra]

Ok. Good to hear. The shop I had it at thought that it was really low and the engine might be worn out.

 

[robert graham]

You could run a tank of fuel through the motor with a "carbon removal dosage" of 2 ounces of Ringfree per gallon of gas to possibly remove some carbon from ring grooves and loosen up piston sealing for better compression....

 

[Pzandstra]

I put can of sea foam in there when I filled it this last time. Not sure if that works as well

 

[99yam40]

If you did not do a shock treatment, it will not do much to help remove carbon from ring grooves