abrilsdad
New Member
- Joined
- December 26, 2014
- Messages
- 8
- Reaction score
- 1
- City, State
- HUNTSVILLE, TN
- Year, Model & Trim Level
- 92 explorer Sport 4.0
I have a 92 4.0 push rod with low oil pressure issue. At cold start no engine noise , like rod knocking or tapping, I do hear what sounds like timing chain going around. I put an oil pressure tester on and it reads maybe 6 lbs at idle and at 2000 rpm it reads maybe 8- 10 lbs. I read somewhere that the timing chain tensioner failing can cause oil blow by and cause low oil pressure, because its oil fed. As for pressure relief valve I don't know where it would be or the pressure regulator, if there is one on this engine. I need help too with this issue.
I did a tune up, plugs and wires and fuel filter change. and upon start up the in car gauge didn't move. it was in the middle right before. Changed the sender, no change. Then used a tester gauge to get the real readings mentioned. I have considered that maybe the pump isn't producing enough flow because I removed the gauge from the hose and plugged the hose with my finger and feel a slight and low pulse. And since there is no engine noise like rod knocking wouldn't think it would be a bearing issue with clearance and oil pressure.
I did a tune up, plugs and wires and fuel filter change. and upon start up the in car gauge didn't move. it was in the middle right before. Changed the sender, no change. Then used a tester gauge to get the real readings mentioned. I have considered that maybe the pump isn't producing enough flow because I removed the gauge from the hose and plugged the hose with my finger and feel a slight and low pulse. And since there is no engine noise like rod knocking wouldn't think it would be a bearing issue with clearance and oil pressure.
