Ok I have a huge problem.... I rebuilt my ls that I had just bought., put brand new gaskets, bearings and seals. After putting it in car, I developed small oil leak. After driving it for a day, that oil leak became a huge oild leak. After trouble shooting I narrowed it down to oil pump seal (crank seal). So I changed it along with oil pan gasket. Immediately after starting car back on, the other side of motor began to leak a lot. There was motor oil shooting from tranny case by flywheel. The only place you can leak from is the crank seal near flywheel. My question is, it wasn't leaking before, after fixing the other side, it immediately gave out on. Me. Could it be to much oil pressure? And what can be done about it?

 

do u have an oil pressure gauge? how much oil pressure is the tnine producing?

 

. iNo I don't. And idk...I just realized that my crankcase ventilation hoses aren't hooked up...could that be cause?

 

not really.....sounds more like an oil pump/pressure problem.

hook up a good mechanical oil pressure gauge to find out what is going on.

 

Ok now if I read to much pressure what do I do?

 

replace the oil pump first. if that does not fix the problem then you need to pull the engine out and have the main bearings checked for proper clearance.

fyi. i had up to about 150-170psi (deffinatly not reccomended) of cold oil pressure at one point and i never had any seal leaks. once i properly re-shimmed my oil pump relief spring i get a normal 70-85psi of oil pressure.

 

NO NO NO!!!

I had this exact same problem... Pull the dipstick while the car is running, you'll hear a large amount of air escaping... You're valve cover venting is hooked up wrong, pressurizing the crank case.

I did this exact same thing with my LS VTEC and made a post about it.

 

I was "THIS" close to changing the pump, seals, etc. When I pulled the stick to see how much oil I had lost... (car off at this point) the dip stick shot out of my hand like a nerf dart. My dad and I looked at each other, first in amazement, then we knew exactly what was happening.

Check that shiz out... I almot GUARANTEE this is the problem.

I just saved you time and money, I expect thanks. I accept flowers.

 

Think about it... you can have 1000 PSI of oil pressure, and it still wont get pushed out of the seals. Air pressure will push it out of the rear and main engine seals, but not the oil pressure itself.

 

the OP said his hoses are not hooked up.......there is no way the crank case is pressurized enough to blow out the rear main and oil pump crank seal.

with the hoses dissconected crank case pressure will escape to atmosphere....thats is if he did not plug the ports up on the valve cover.

the OP needs to check a few things over.

 

My pcv isn't hooked up and I have a breather on my. Valve cover. But if pcv isn't hooked up doesn't that mkean that air doesn't escape fast enough? And if I get air out by removing dip stick, will I still have to repclace crank seals or did your seals stop leaking after you removed dipstick paton5g?

 

Oh and did you pull bout dipstick while car was on or off?

 

Car was off, and immediately after I shut it down, I pulled the stick and heard a big Pssshhhhh!!! It blew the stick out of my hand.

The pressure created by the blow by gases not escaping can absolutely force the oil through the seals, because that's exactly what happened to me. I have brand new seals, bearings, everything. It forced that oil out pretty steadily.

Took a good minute or more to build up enough pressure, just at idle. As soon as we fixed the misconnection, the problem disappeared.

The oil would only be leaking out if you have a pressurized crank case. You said you rebuilt it, so the seals are new yes? You have a pressurized crank case. Some how, some where, there is pressure accumulating in your block. This has absolutely nothing to do with high oil pressure.

 

not supposed to have pressure down there anyways. "squirting out of the seal" sounds like its got crankcase pressure.

 

Ok thanks did what u said problem is gone

 

So what was the actual issue?