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fred cook fred cook is offline
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Join Date: May 2001
Location: Deep South
Posts: 5,145
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oil pressure change

Quote:
Originally Posted by jsveb View Post
Did some more testing today...

Can any of you guys comment on, why the pressure to rises to about 2 bar and then in about five seconds start to drop?

I won't start it again until I have checked the pressure relief valve.

What should I be looking for when checking the valve?
Probably what is happening, is that most of the oil that had drained into the sump is being pumped up into the engine and the oil tank. Losing that head of pressure could be what is making the difference since the oil pump is having to scavenge oil rather than just pumping it from a bulk source.
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FEC3
1980 911SC coupe "Zeus" 3.3SS
god of thunder and lightning
Old 07-08-2013, 02:18 AM
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