Compression Test

[JohnnyT]

I performed a compression test and got 119 on each cylinder and the car smokes when you hammer on it, am I screwed? I blew a turbo earlier, could it be the cause of the smoke?

 

[silver bullit]

Did you do the test when the motor was was and the throttle wot?

 

[big_d]

^^^ I think he means "when motor was warm and wot"

 

[JohnnyT]

No, I don't think it was warm, my dad did it since I am at college, I will redo it this weekend when I go home. What do I need to do to prepare for optimal results?

 

[silver bullit]

Car needs to run till warm, and put the foot on the gas peddle and hold it open while cranking it.

 

[JohnnyT]

Don't i have to remove a fuse? Is this a good guide to follow, http://www.geocities.com/dsmgrrrl/FAQs/compression.htm

 

[Laysher91]

Yes, remove the MPI fuse thats on the positive battery cable and also disconnect the coil pack. You DO NOT want any fuel or spark happening during your compression test. Make sure the car is warm and keep your foot on the gas to keep it at WOT. Do a wet test, with a cap full of oil, if any cylinders have questionable results. Increased compression with oil indicates worn rings.

 

[JohnnyT]

Cool, thanks all, I will let you know this weekend.