1991 GMC C1500 Engine intake manifold gasket replaced cause

Tiny
FIREWLF771
  • MEMBER
  • 1991 GMC C1500
  • V8
  • 2WD
  • AUTOMATIC
  • 64,500 MILES
Long story as short as possible. I had the intake manifold gasket replaced on my 1991 GMC 1500 with 64,500 original miles. Before bringing it into the shop, the truck ran excellent. At the shop, after the gasket was replaced, I started the truck up and there was a new clicking noise coming from underneath the valve cover. The mechanic said it was normal and it should go away shortly. I said ok and drove it about 1.5 hours on the highway. I had to step on the gas unusually hard to get it up to highway speeds. Anyway, the oil pressure dropped slowly and eventually I had to stop or I would of stalled out. When I checked the oil, it was full. I had the truck towed back to the shop and the mechanic said the engine died. The barings were fried. Oil pump is working properly. He's taking NO responsibility for it. Is there any way he could of screwed with something while replacing the intake manifold gasket that caused this? Does the coolant need to be drained before replacing the gasket? Why was there suddenly a rattle coming from underneatht the valve cover? I don't know what to do really? I bring it in, it sounds great. I drive it, and it dies an hour and a half later. Any suggestions?
Wednesday, March 12th, 2008 AT 8:49 AM

3 Replies

Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
To be honest, it sounds like he did not change the oil after the intake and let anti freeze down in the engine. Anti freeze will chew those bearings up in no time. A guy I use to work with did it once. It sounds just like what happend to him. I would say its his fault.
Was this
answer
helpful?
Yes
No
Wednesday, March 12th, 2008 AT 9:06 AM
Tiny
FIREWLF771
  • MEMBER
  • 5 POSTS
Thanks for your quick reply! The real question I guess is what do I do now? I don't think I can get a sample of oil to prove your theory correct because they already drained it. Can I fill the oil up again, drain it, and hope some more antifreeze comes out with the oil? I don't have any proof other than what I saw when I drained some oil out of it when it first happened. The oil appeared a little milky in color and looked liked it was mixed with something. What would you do?
Was this
answer
helpful?
Yes
No
Wednesday, March 12th, 2008 AT 12:13 PM
Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
You can try to refill it and run it but I dont think that will help. About the only thing you can do is see if they will help you out on the cost to rebuild or install a used engine. Sorry to say but I think I would go to another shop to have the work done, I cant believe they didnt change the oil.
Was this
answer
helpful?
Yes
No
Wednesday, March 12th, 2008 AT 12:33 PM

Please login or register to post a reply.

Sponsored links