oil pressure drops

[nolig2278]

I have a bpt setup and recently my oil pressure at idle pretty much drop s to 0 or below and when running it is around 12psi.

oil cunumption is very very minimal.
i am using but have been using mobil 1 extended syn oil.
what could be wrong?

thanks

[jaydog5678]

Before getting into diagnosis, what type of (brand) oil pressure gauge do you have?

Make sure that there are no leaks at the sending unit, which I would imagine you have an oil pressure gauge teed off from. Or do you have it teed off somewhere else...cyl head, etc.?

[nolig2278]

i have it in place of the stock sender. it has been there for yrs.

autometer

today i just noticed that with the car on but before cranking the needle of the autometer does not go to 0. Is that normal?

Thanks

[jaydog5678]

I would take it to shop to verify oil pressure. Have them install a gauge to make sure there are no problems. You may have a gauge malfunction.

[onesweet92mazda]

hmm clogged bypass in the oil filter... or bad oil pump... try to get a shop to test it first tho