My compression is HALF of what it's supposed to be! Help!

[CBT8503]

I went to a local import shop to get my brakes changed, new spark plugs, and all that, and I got him to do a compression test for me. The results were 100, 85, 100, 100.... What could be the problem?

 

[Turbo Talon DL]

How did he test your compression, static or dynamic? Ex..my dynamic comp. is about 80-90 ish, my static comp. is 180-195...depends on air temp moisture content. I think you should do your own compression test before you get too scared.

 

[CBT8503]

makes me feel a little better, but i dont know how to do my own.

 

[DAC96]

http://www.dsmgrrrl.com/FAQs/compression.htm

hope this helps!
derek

 

[CBT8503]

What are the normals on a dynamic compression test?