high oil pressure

[hunterg5]

I am wondering what could be causing such high oil pressure on my car it has 100+ psi of oil pressure. Any info would be great

 

[rydereclipse]

Balance shafts removed?

 

[907dirtybird]

I am no expert, but I would suggest making sure your oil pressure sending unit is not the cause of this. Mine was the opposite, my gauge dropped to 0 psi, which would normally be very, very bad, and burn the engine up. Long story short, I drove another 100 miles home with my guage reading 0, even though I really did have oil pressure. The stock sending units are notorious for being giant pieces of crap, so there is a chance your oil pressure is normal, but your gauge is fooling with you. I would think at 100psi, youd be blowing your dipstick right out of the down tube... is that happening?

 

[Kdouglas89]

I am no expert, but I would suggest making sure your oil pressure sending unit is not the cause of this. Mine was the opposite, my gauge dropped to 0 psi, which would normally be very, very bad, and burn the engine up. Long story short, I drove another 100 miles home with my guage reading 0, even though I really did have oil pressure. The stock sending units are notorious for being giant pieces of crap, so there is a chance your oil pressure is normal, but your gauge is fooling with you. I would think at 100psi, youd be blowing your dipstick right out of the down tube... is that happening?

This is exactly correct. I actually have 2 bad sensors. 1 reads max, and the other reads I have 0. I said forget it, and I am leaving it as is.

 

[hunterg5]

Balance shafts removed. You know now that you mentioned it earlier in the week I had it running and shut it off and the dipstick had barely popped up but it could've been from me. How would I check the sending unit? And is it on the oil filter housing?

 

[907dirtybird]

Balance shafts removed. You know now that you mentioned it earlier in the week I had it running and shut it off and the dipstick had barely popped up but it could've been from me. How would I check the sending unit? And is it on the oil filter housing?

Alot of guys deal with the dipstick popping out a little, could be a problem, but most of the time they just install a spring to hold it down yours would most likely shoot out like a bottle rocket if you really were holding 100psi. As far as the sending unit goes, yes it is on the oil filter housing, and it is pretty cheap to just replace with a new one, or you could upgrade to a better sending unit and gauge all together.

 

[hunterg5]

I already have gauges but where could I get a better than stock one or better year a stock one I checked advancedautoparts but didn't have it

 

[907dirtybird]

I already have gauges but where could I get a better than stock one or better year a stock one I checked advancedautoparts but didn't have it

STM: 90-99 DSM | OEM MITSUBISHI PARTS | ELECTRICAL COMPONENTS

I like these guys alot

 

[ICM_MikeLago]

STM: 90-99 DSM | OEM MITSUBISHI PARTS | ELECTRICAL COMPONENTS

I like these guys alot

+1 for STM, always a great experience.

 

[familyMAN]

I would think at 100psi, youd be blowing your dipstick right out of the down tube... is that happening?

Dipstick popping is related to excessive crank case pressure, not oil pressure.

 

[99gst_racer]

Removing balance shafts causes the oil pressure to rise because the oil port is now blocked.

How are you verifying you have 100 psi oil pressure without an aftermarket gauge?


First, get an aftermarket oil pressure gauge. Then, search how to port your oil filter housing.

 

[907dirtybird]

Dipstick popping is related to excessive crank case pressure, not oil pressure.

I stand corrected thank you for clarifying! I will never claim to be an expert at anything

 

[dsmTripp]

Any resolve to this? Just wondering since my prosport gauge has started reading from 40 psi up to 100 psi

 

[fastfred]

oil pressure increase is pretty common when removing the balance shafts. porting the oil filter housing is usually the fix. you can also get a lighter spring from a mirage I believe that will allow the piston in the oil filter housing to release the pressure sooner. jnztuning has them I think. I got mine from the dealer
md015988 is the part number.