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I recently rebuilt two Geo Metro 3 cylinder motors. After ...

Sent to Car Experts March 25 2007 at 8:32 AM
   

I recently rebuilt two Geo Metro 3 cylinder motors. After driving about five miles the cars started smoking very badly. When checking under the hood the oil is going from the valve cover into the throttle body. The compression is 140 pounds on all cylinders. The pcv valve port under the throttle body is open. Do you have any suggestions as to what might be wrong? Thanks

 

Optional Information:
1993 General Motors GEO Metro 1 liter

Already Tried:
Checked the compress and pcv valve and port.

Customer (name blocked for privacy)
Status:  Closed   Value: $15
Answer
March 25 2007 at 8:43 AM (11 minutes and 50 seconds later)
         
REPLIEDCheck Mark
The head gaskets were installed incorrectly or the wrong ones allowing oil galley ports to bleed into intake.

"It is much wiser and cost efficient to ask a question than to stumble blindly through your auto repairs".Please Click Accept if my answer was helpful.
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Michael -- Auto Service Technician -- 99% Positive Feedback on 599 Car Accepts
21yrs.Foreign and domestic driveability diagnosis and repair/ ASE Cert./Fuel Injection Specialist.
Reply
March 25 2007 at 8:47 AM (3 minutes and 36 seconds later)
         
Reply to Michael's Post: The oil is not bleeding into intake. It is being forced into the air breather from the valve cover hose which connects to the air breather
Customer (name blocked for privacy)
Reply
March 25 2007 at 8:58 AM (10 minutes and 58 seconds later)
         
I believe I gave you insufficent data for you to give me an answer for my first question. I know your response would normally be correct.
Customer (name blocked for privacy)
Answer
March 25 2007 at 9:07 AM (8 minutes and 43 seconds later)
         
ACCEPTEDCheck Mark

The drain back hole in the head gasket is too small. This causes a pooling of oil in the head which gets drawn into the combustion chamber. Engines with this problem often burn a quart of oil in under 50 miles.

Compare an identical headgasket which was used during assembly with the one removed from the vehicle. If the drain ports in the gasket are not the same as the original headgasket, replace the headgasket with the correct one.

You might be able to just punch out the hole without replacing the gasket.



Edited by Marc on March 25 2007 at 9:09 AM

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Marc -- Technician -- 98% Positive Feedback on 1035 Car Accepts
33 years exp. automotive repair NYS emisisions repair cert.
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March 25 2007 at 2:04 PM (4 hours and 57 minutes and 36 seconds later)
         
Thanks for your help. I will check the gasket for correct holes.
Customer (name blocked for privacy)
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