blue92laser
15+ Year Contributor
- 267
- 0
- May 13, 2004
-
Laurel Springs,
New Jersey
Hey, Ive been having low oil pressure for a bit of a time now. Let me give u background on when it happened and then Ill go from there.
I was at the track one day and on my 3rd run my flywheel had came loose. At this time I checked everything. Oil pressure, vacuum, and temp. Nothing seemed to be different from before so I took the car home gently at around 25mph with the hazards on pissing off every impatient driver on the way home, but thats a whole different story.
When i ripped the tranny out, I also took notice one of my camgears were missing one of the 5 spokes that go to the cam gear teeth. So, i decide to do a timing belt change on the car. I get down low and discover there is no balance shaft belt left on my car. In fact the teeth were everywhere and the belt looked like a alternator belt.
I go ahed and set the timing up, redo the balance shaft belt, put a new cam gear on the intake side, fix the flywheel and 16 hours of horrifying work later...the car starts.
It started up ands tumbled to a stahl, did the same thing a few times. I realized teh BOV return line was off so i routed tht back in. I started the car and it had bad oil pressure, it didnt sit wear i normally sat at idle and bad vacuum (-10Hg). I thought my internals were done.
Next day, I decided to rip the oil pan off and check the bottom end, to my knowledge eveyrthing was tight. I proceeded onto the timing thinking i might be pulling bad vacuum from a cam being off a tooth. Timign is perfect on every mark.
I put the car on the computer and find out the MAS is practically dead and the o2 is running in a constant closed loop (or open loop) which ever one is bad, i forget
.
I replaced the MAS and the vacuum settled out at -20Hg and my idle returned to normal.
My Oil pressure is still low though.
Which brings me to the main point of this thread, can anyone help me diagnose a low oil pressure problem.
If it was my main or rods, i would be making knock noises and if it was my balance shaft bearings going bad, they would make pretty bad noises too.
I here absolutely nothing from the bottom end.
Also, when i drive the oil pressure raises up but doesnt really return to normal driving oil pressure and when i get in it, it goes up even more, but never to where it was before.
I was at the track one day and on my 3rd run my flywheel had came loose. At this time I checked everything. Oil pressure, vacuum, and temp. Nothing seemed to be different from before so I took the car home gently at around 25mph with the hazards on pissing off every impatient driver on the way home, but thats a whole different story.
When i ripped the tranny out, I also took notice one of my camgears were missing one of the 5 spokes that go to the cam gear teeth. So, i decide to do a timing belt change on the car. I get down low and discover there is no balance shaft belt left on my car. In fact the teeth were everywhere and the belt looked like a alternator belt.
I go ahed and set the timing up, redo the balance shaft belt, put a new cam gear on the intake side, fix the flywheel and 16 hours of horrifying work later...the car starts.
It started up ands tumbled to a stahl, did the same thing a few times. I realized teh BOV return line was off so i routed tht back in. I started the car and it had bad oil pressure, it didnt sit wear i normally sat at idle and bad vacuum (-10Hg). I thought my internals were done.
Next day, I decided to rip the oil pan off and check the bottom end, to my knowledge eveyrthing was tight. I proceeded onto the timing thinking i might be pulling bad vacuum from a cam being off a tooth. Timign is perfect on every mark.
I put the car on the computer and find out the MAS is practically dead and the o2 is running in a constant closed loop (or open loop) which ever one is bad, i forget
.I replaced the MAS and the vacuum settled out at -20Hg and my idle returned to normal.
My Oil pressure is still low though.
Which brings me to the main point of this thread, can anyone help me diagnose a low oil pressure problem.
If it was my main or rods, i would be making knock noises and if it was my balance shaft bearings going bad, they would make pretty bad noises too.
I here absolutely nothing from the bottom end.
Also, when i drive the oil pressure raises up but doesnt really return to normal driving oil pressure and when i get in it, it goes up even more, but never to where it was before.
Bad Balance Shaft Bearings - which is why you threw the Belt - no oil pressure - ETC - In between racing the piss out of the thing & tearing it down over & over you need to do what you should have done to START with & get rid of the damn things - Put some Rod Bearings & an Oil Pump in it while you are down there! 
