82 vette
Thread Starter
5th Gear
Joined: May 2014
Posts: 5
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82 vette
I have had oil pressure checked and they said it was good. Here is the problem oil pressure at 40 psi when engine starts as it runs the pressure will drop. At idle I will show 0,20, and at acceleration sometimes 30 psi. Oil pressure will not stay constant. Is oil pressure sending unit by distributor and is it hard to replace if bad.
Race Director
Joined: May 2006
Posts: 18,735
Likes: 2,582
Yes it is next to the distributor. Shouldnt be hard to replace. You state it was checked but do not say what the true readings are? The rule of thumb is 10 psi for every 1k in revolution. What weight oil are you using?
Thread Starter
5th Gear
Joined: May 2014
Posts: 5
Likes: 0
82 Vette
engine mileage is 39765. Not a lot of miles. Changed oil about 8 months ago and using grade 10w 30w. Car has spent a lot of time sitting and not moving. I guess I am use to other auto where oil pressure stay constant. Can you check oil pressure and gauge pressure at same time. They did not tell me what pressure was when checked.
Thread Starter
5th Gear
Joined: May 2014
Posts: 5
Likes: 0
Oil pressure issues
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,754
From: Charlotte NC
Also...the oil pressure fitting off of a C4 will work because there are two ports and the original sender can be installed along with a testing equipment.
I usually use the lower test point above the oil filter.
DUB
Melting Slicks
Joined: Jul 2005
Posts: 2,740
Likes: 3
From: Aurora Ontario
I have had oil pressure checked and they said it was good. Here is the problem oil pressure at 40 psi when engine starts as it runs the pressure will drop. At idle I will show 0,20, and at acceleration sometimes 30 psi. Oil pressure will not stay constant. Is oil pressure sending unit by distributor and is it hard to replace if bad.
I believe the fuel pump kill is for less then 8 psi.
Jim
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