I have 190 lbs on cylinders one, three and five and 150 on two, four and six what could cause that and what is the compression supposed to be?
May 5, 2018 at 6:28 AM
Compression
2005 BUICK RENDEZVOUS
AARON BLACQUIERE
- MEMBER
- 4 POSTS
- FOLLOW
Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
and consult a qualified repair shop when needed.
Advertisement
Good morning.
The compression is within specs. Considering the age of the vehicle and mileage, it is good.
The difference may be from work performed at one time whether it was a head gasket on valve job.
It will not effect the operation of the engine at all.
The spec is 140-165. the 190 is a little high but that could be the result of carbon build up.
Do you have a concern?
Roy
The compression is within specs. Considering the age of the vehicle and mileage, it is good.
The difference may be from work performed at one time whether it was a head gasket on valve job.
It will not effect the operation of the engine at all.
The spec is 140-165. the 190 is a little high but that could be the result of carbon build up.
Do you have a concern?
Roy
May 5, 2018 at 6:49 AM
Advertisement
What is the best way to get rid of carbon build up without tearing down the head?
May 5, 2018 at 8:21 AM
A product call Seafoam is a good product.
Also, GM top engine cleaner is another good one for carbon build up.
Roy
Also, GM top engine cleaner is another good one for carbon build up.
Roy
May 5, 2018 at 12:38 PM