Wet spark plugs

RUDY0287

MEMBER
2001 CHEVROLET SILVERADO
4.8L
V8
2WD
AUTOMATIC
140,000 MILES

Hello, I have been losing a lot of coolant lately and decided to do a compression test. When I pulled the spark plugs on bank 2 they were all wet. Not fuel or oil but coolant.
What would you suggest? Thanks for your help.

Sunday, September 16th, 2018 AT 1:42 PM

5 Replies

DANNY L

MECHANIC
5,648 POSTS

Hello, I am Danny.

That would suggest an intake manifold gasket or head gasket.That is a pretty major repair job. If you want to do the repairs yourself I can send you step-by-step instructions with pictures. I am sure a shop would charge you roughly $1,500.00 for this repair (head gasket). I have attached a tutorial for intake gaskets. Hope this helps and feel free to ask any questions. Thanks for using 2CarPros.
Danny-

https://www.2carpros.com/articles/replace-intake-manifold-gasket

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

+1

Sunday, September 16th, 2018 AT 8:22 PM

RUDY0287

MEMBER
8 POSTS

Thanks for your reply Danny. I think you might be right on with the intake. Did leak down test on bank 2 with little to no results. No effect on coolant in reservoir. Thanks again.

Was this

answer

helpful?

Yes

No

Monday, September 17th, 2018 AT 11:59 AM

DANNY L

MECHANIC
5,648 POSTS

You are welcome!
Keep us informed and thanks again for using 2CarPros.
Danny-

Was this

answer

helpful?

Yes

No

Monday, September 17th, 2018 AT 12:06 PM

RUDY0287

MEMBER
8 POSTS

Hi Danny. You were right, it was the intake manifold. Leaking on all cylinders on bank 2 and cylinder seven on bank 1. Now what would be the best method to clean out the sludge it produced? Have a whole lot of scraping to do on the head but what about the rest of the motor?

Was this

answer

helpful?

Yes

No

Friday, September 21st, 2018 AT 9:05 AM

DANNY L

MECHANIC
5,648 POSTS

Hello again.

As far as on metal surfaces you can use aerosol cleaners (Brakleen, Gunk, etc) without any problems. Be very careful what you use on a plastic intake manifold. I would suggest something like Simple Green, 409 or something like that. Certain aerosol chemicals used on plastic can possibly melt/distort/or ruin them. Hope this helps and thanks again for using 2CarPros. Keep us updated when completed.
Danny-