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Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Chevy
Satisfied Customers: 3960
Experience:  Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles A6 - Electrical / Electronic systems A7 Heating / Air Conditioning systems
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2012 chevy cruze. Vehicle over heated and blew head gasket.

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2012 chevy cruze . Vehicle over heated and blew head gasket. Had head machined completely ( valve grind, resurfaced, checked for cracks ) . Put back together and am getting a lifter/valve noise. noise is loud when first start and slowly get less noisy to about 85% gone but clearly still there.

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

Customer: replied 29 days ago.
ok

Hey how are you

did you replace the lifters, if it got to hot ,those lifters will collapse and want get pump up enough with oil to stop that Tapping you hear ?

any oil light coming on

lets start here and we go from there

do you have an oil pressure tester ?

did you take oil pan out and check for any sludge in it preventing the oil pressure build up to reach our lifters on top

now if you just did it ,at it goes away 85% then drive it 50 miles and see if the lifters pump up

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

Customer: replied 29 days ago.
I did not replace lifters.
Just did valve job but I have let it run at idle a total of about 1 hour and have drove the car about 10 miles.
The car only has 60k.
No oil light. took valve cover back off the check clearance in valve lash. there was 0 and the head had plenty of oil on it.
There is a oil flow check valve that goes in the block next to the middle exhaust head bolt that was broken when I pulled the head ( housing broken, spring in 3 pieces and the ball) No dealer in the country has this and none is being make at this time ( multiple chevy dealers) but the check valve is only to keep oil in head area on start ups (I could not put back in). I was told that it may start up noisy for about a second or two but the valve is not the problem with the noise after that.
This valve you referring to
To know for sure on that valve , do a oil pressure test
This is your specs
Oil pressure testing
Oil pressuer testing continues
Customer: replied 29 days ago.
ok I will do the oil pressure test

ok sounds good , will try to help you with it

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Chad Farhat
ASE Certified Technician

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