Bruce

I had my engine rebuilt about 1500 mls ago, but now i don't have enough oil pressure. when i sit at red lights it almost drops to zero and when i am driving i doesnt go past 60 psi. I had the car on jack stands, i didnt see my mystery leak that i have, but maybe i just didnt know where to look. Please help me, I would hate to loose my car for something like this.

Mr. Gadget

year?could be many things. If you have an 86-88 the rebuilder could have made a mistake with the oil passage in the front cover. Mazda changed the gasket to be an 89-91 model in the kits and did not tell anyone. If not installed correct you get and internal leak that will cause psi to drop.

White_Seven

Or on the less dramatic and simpler side, the wire to your oil pressure sending unit might not have a good contact. You can check this by looking at the bell-shaped thing sticking out sideways from just beneath your oil filter. There should be a connector that slides (hooks on, not push on) onto the end of the bell shaped thing. The wire would be yellow with a red stripe. Check that and make sure it's got a good, clean connection.

5 point whoa

yeah, there might be a bad connection somewhere

Mr. Gadget

i agree that it might be something simple as well. Always check the easiest (and cheapest) solution first. Do take the time to ask your rebuilder how he handled the o ring in the front cover. A phone call is cheap, just to be sure.

Bruce

I appreciate all the info thus far, I'll check the wire tommorow. But i didnt know about that gasket thanks for telling me. What about that O ring in the front cover, could you be a little bit more specific? Also I am sure this isnt quite the same but I am using 10w30 in the engine, I know its too thin for the summer and I am going to change it, but would that increase the pressure at all?

Mr. Gadget

I'll put a picture up after work tonight

banzaitoyota

Read this:
http://www.mazdatrix.com/faq/oring.htm