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1980 C3 engine problem

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Old Dec 24, 2011 | 11:42 PM
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Default 1980 C3 engine problem

I'm talking with a guy who has this car for sale and he said the timing chain broke so he replaced it. Now the car starts but there is no oil getting to the top of the engine. The oil pressure gauge reads 40psi. What could be causing this?

Thanks and Merry Christmas!!!
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Old Dec 25, 2011 | 08:32 AM
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Doesn't make much sense that you are getting no oil from the lifters with 40 lb pressure. Are you sure the guage goes to zero with the engine off?
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Old Dec 25, 2011 | 08:56 AM
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Originally Posted by ShootCraps
I'm talking with a guy who has this car for sale and he said the timing chain broke so he replaced it. Now the car starts but there is no oil getting to the top of the engine. The oil pressure gauge reads 40psi. What could be causing this?

Thanks and Merry Christmas!!!
There should be some bent valves I would think!!
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Old Dec 25, 2011 | 11:56 AM
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How is it that the owner and you have become aware that there is no oil in the top of the motor? Have you removed a valve cover to confirm this, or is the motor noisy and he is assuming that there is no oil getting up top?

40Psi at idle is more than sufficient. On the other hand, 40Psi at 6500 rpm is not good.

Im going to go with the above poster that mention bent valves, and that the owner is hearing associated noises and assuming an oiling issue.
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Old Dec 26, 2011 | 11:37 AM
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Originally Posted by Big Block Dave
....Have you removed a valve cover to confirm this...
Bingo. Changing the timing set would not otherwise affect engine oiling. What makes the owner think the top end in dry?

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