Oil Pressure Problem
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TECH Regular
Joined: Jun 2003
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From: So Cal
Oil Pressure Problem Ok this is the problem. The Oil Pressure starts off fine when i start the car at about 40, after about 10 min. of driving it goes down to 30. Now if i drive it longer it has dropped down to 20 on me once. Im not really driving my car right now because of those problems. I did a search and didnt really find anything helpfull. Other posts had guys that didnt change their oil pump or o-ring during a cam swap. I have done no kind of work around the oil pump on my car. The only thing was this started after i got a new flywheel put on my car and they had to drop the transmission which i dont think would have anything to do with it. The current oil pump was put on last year when i did the cam swap. anybody know what is going on? do i need a new pump already?
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From: So Cal
i totally forgot i made this post. So to answer the oil question i always used valvoline synthetic but this last time when the pressure problem started i changed the oil with mobil synthetic and it didnt make a difference. Anyways i took it in to get it checked and it was diagnosed as having a bad sending unit. They put a new one in and it ran fine back home. that was fri night. this morning i took it to work fine but when i got off of work, driving home, i noticed the pressure dropped again. It went down to the lowest 25. Please tell me my bearings arent getting worn out......
Mine did pretty much exactly what you're describing before I replaced the oil pump and the o-ring on the oil pick-up tube. I think it was more the o-ring than the pump, but when you get the engine that far apart, you might as well replace them both.
-Mike
-Mike
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From: So Cal
i guess that can be a possibility, i just find it strange that this is happening now after i got my flywheel replaced. And also the fact that ive had the current pump on for a year now with no problem. Seems kind of strange that it would already be acting like this. This all just seems strange....
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It says in your sig you have a rollmaster double roller, and then in your post you say you've had no work done around the oil pump. The oil pump is removed to install that double roller, and there are some oil pump shims you need to use (and I beleive use RTV to seal) when you install a double roller. Maybe that has something to do with the pressure, oil could possibly be leaking from the shimmed oil ports (maybe sealer wasnt used?).
Or, it could be you have contaminants in your oil...namely coolant. That'd thin it out and cause the lower pressure. It could also be that your bearings are just wearing with miles....at 90-100k miles, the pressure you describe wouldnt be *that* abnormal.
And finally, it could be the pump going out, or a crimped o-ring finally tearing through and letting go a little.
Or, it could be you have contaminants in your oil...namely coolant. That'd thin it out and cause the lower pressure. It could also be that your bearings are just wearing with miles....at 90-100k miles, the pressure you describe wouldnt be *that* abnormal.
And finally, it could be the pump going out, or a crimped o-ring finally tearing through and letting go a little.
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Thread Starter
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From: So Cal
Originally Posted by jmX
It says in your sig you have a rollmaster double roller, and then in your post you say you've had no work done around the oil pump. The oil pump is removed to install that double roller, and there are some oil pump shims you need to use (and I beleive use RTV to seal) when you install a double roller. Maybe that has something to do with the pressure, oil could possibly be leaking from the shimmed oil ports (maybe sealer wasnt used?).
.
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Originally Posted by jmX
Or, it could be you have contaminants in your oil...namely coolant. That'd thin it out and cause the lower pressure. It could also be that your bearings are just wearing with miles....at 90-100k miles, the pressure you describe wouldnt be *that* abnormal..
Originally Posted by jmX
And finally, it could be the pump going out, or a crimped o-ring finally tearing through and letting go a little.
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Originally Posted by jmX
It says in your sig you have a rollmaster double roller, and then in your post you say you've had no work done around the oil pump. The oil pump is removed to install that double roller, and there are some oil pump shims you need to use (and I beleive use RTV to seal) when you install a double roller. Maybe that has something to do with the pressure, oil could possibly be leaking from the shimmed oil ports (maybe sealer wasnt used?).
Or, it could be you have contaminants in your oil...namely coolant. That'd thin it out and cause the lower pressure. It could also be that your bearings are just wearing with miles....at 90-100k miles, the pressure you describe wouldnt be *that* abnormal.
And finally, it could be the pump going out, or a crimped o-ring finally tearing through and letting go a little.
Or, it could be you have contaminants in your oil...namely coolant. That'd thin it out and cause the lower pressure. It could also be that your bearings are just wearing with miles....at 90-100k miles, the pressure you describe wouldnt be *that* abnormal.
And finally, it could be the pump going out, or a crimped o-ring finally tearing through and letting go a little.
All of these points are excellent and of course correct, but one step further send a sample of your oil to a lab to be checked for abnormal amounts of bearing material etc.
