The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 07+ Chevy and GMC Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 12-16-2021, 10:34 PM   #1
no1udknow
Registered User
 
no1udknow's Avatar
 
Join Date: Jan 2014
Location: Sacramento,California
Posts: 696
Re: 07 avalanche p0302 code driving me nuts...

Quote:
Originally Posted by heartattack View Post
You can squirt a small amount of oil in #2 cylinder with the spark plug removed. Spin the engine over and see if your compression shows a increase. if it does, then its most likely ring related.

I would guess its carboned rings. If so, buy the GM top end cleaner, pour some in each cylinder and let sit overnight. spin the engine over the next day with the spark plugs out to clear the fluid. Install the spark plugs and go drive the truck to clear out the residue.
Thanks, I will give that a try.
__________________
Built not bought!
My dad always tried to convince me HEI was pointless!
Welding is a lot like sex, you don't have to be great with the rod as long as you thoroughly prep the surface and your good at grinding
My build : 68 C10 Short Bed Conversion
no1udknow is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 08:44 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com