oil pressure

ok i took out the bottem end replaced the main bearings and the rod bearings cause the motor was knocking so i put it back together and i had no oil pessure so i took it back a part and changed out the oil pump and took out the oil sensor and put in a oil gauge and i still dont have the right oil pessure which is 45-65 PSI i have 40 PSI when i start it up and bout time i Make it to the light down the street i have 2-4PSI at a stop and dosent go passed 15PSI i dont know whats wrong.:banghead:

man517

Welcome to AFs!

Were you getting the oil light before you changed the bearings? Are you hearing any knocking after you replaced the bearings?

Is this on your 93? What motor do you have?

I would check the bearing clearence with a tool called "plastic gauage". You can buy it at a good autoparts store. What you do is to pull the oil pan off AGAIN and pull a bearing cap. Then you place a strip of the plastic gauage on the bearing surface and torque the cap. Make sure you don't rotage the crankshaft when you have the plastic gauage in. After torquing the cap bolts take the cap off and measue how much the plastic gauage has spread out using the package the gauage came in. The more it spreads the tighter the clearence. If there's too much clearence oil leaks out the side of the bearings and causing low oil psi.

I hope this helps.

Regards

Dan

thanks! oh there was no light on at all. but its its not knocking at all. it a 3.0 single head none flex.

Are you going to give the plastic gauage a try?

Dan