high oil pressure???

redneckranger69 · #1 04-03-2012, 04:11 PM

i have a 1983 ford ranger 2.3l 2wd with a 4 speed. i have had high oil pressure for a while now. the gauge is all the way at the top on the h for oil. i have no idea what the problem is??? lately my dipstick will even pop off becase there is to much pressure. i have replaced my pcv valve. i need help.

FireRanger · #2 04-03-2012, 04:51 PM

Well have you done an oil change?

redneckranger69 · #3 04-03-2012, 04:55 PM

yes i have done multiple oil changes since i have had the truck. and i have replace the sending unit too

FireRanger · #4 04-03-2012, 05:18 PM

So you changed the oil while having this high pressure problem and the problem didn't change?

redneckranger69 · #5 04-03-2012, 05:19 PM

ya it still high oil pressure.

Rangerman49 · #6 04-03-2012, 06:20 PM

Quote:

Originally Posted by redneckranger69

i have a 1983 ford ranger 2.3l 2wd with a 4 speed. i have had high oil pressure for a while now. the gauge is all the way at the top on the h for oil. i have no idea what the problem is??? lately my dipstick will even pop off becase there is to much pressure. i have replaced my pcv valve. i need help.

On most engines ,the oil pump has a check valve built in to regulate pressure at a set PSI threshold like 40-60psi. It could be stuck closed and not allowing pressure to bleed off back into the oil pan. The dipstick thing ,being popped off is something else and not excess oil pressure. excess blowby might ,if your rings are bad or PVC valve is not working.

If you changed the sender and there wasn't any change the only thing I would guess would be spun bearing and I say this because I had this happen to me once on Pontiac GTO, Spun a Cam bearing and my oil pressure went to 90psi. This is just a shot in the dark though!!

One more thing you might check is if you have the correct oil filter.

redneckranger69 · #7 04-03-2012, 06:27 PM

i know i have the correct filter.what exactly is blow by??? and i replaced my pvc valve

FireRanger · #8 04-03-2012, 06:41 PM

Would a head gasket leak bleed cylinder pressure in to cause this? Not sure if that is possible?

Rangerman49 · #9 04-03-2012, 07:23 PM

Quote:

Originally Posted by FireRanger

Would a head gasket leak bleed cylinder pressure in to cause this? Not sure if that is possible?

If the head gasket was blown to the oil gallery I would think that hydraulic press would trump pneumatic pressure of the piston and it would be burning oil like crazy. Not knowing how oil is delivered to top end on these engines I'll have pass on that question.

redneckranger69 · #10 04-03-2012, 07:25 PM

i know its not a bad head gasket just replaced not to long ago and still high pressure

Rangerman49 · #11 04-03-2012, 07:37 PM

Quote:

Originally Posted by redneckranger69

i know i have the correct filter.what exactly is blow by??? and i replaced my pvc valve

Blow by is combustion gases leaking past the rings that are worn or broken into crankcase. If you take off the oil filler cap and see smoke ,you have blow by. The PVC is taking vacuum from the intake and trying burn it off to keep out of the air. Keeping a vacuum in the crankcase keeps oil from being pushed out from seals and gaskets under pressure.

redneckranger69 · #12 04-03-2012, 07:52 PM

Quote:

Originally Posted by Rangerman49

Blow by is combustion gases leaking past the rings that are worn or broken into crankcase. If you take off the oil filler cap and see smoke ,you have blow by. The PVC is taking vacuum from the intake and trying burn it off to keep out of the air. Keeping a vacuum in the crankcase keeps oil from being pushed out from seals and gaskets under pressure.

ty for exsplaining that to me.. i have no smoke when i take off the oil filler cap.

armyman907 · #13 11-25-2012, 12:02 PM

I am having the same issue but my issue also blowing out the pcv and oil stick

jarrod27 · #14 11-26-2012, 09:54 PM

Take off the air hose that goes from the air filter to throttle body. If it or throttle body has a lot of oil in it you might have blow by problems.