ol' 93 12 valve

A friend of mine has a 2001 24 valve that he rebuilt and p pumped. It doesnt have 500 miles on it and it is puking oil out of the dip stick. It has had blow by since it first started and if you cover the blow by vent and hold it for a second it will start puking oil out the dip stick. It doesnt have a knock and the performance hasnt changed. We havent been able to get it timed so it is running kind of rough. There is nothing in the oil. What do yall think??

infidel

First make sure the dipstick o-ring is intact and valves are adjusted.
Vacuum leaks will cause excessive blowby.
Sort of doubt the timing would cause it but sounds like it needs to be adjusted anyway.

Ronco95

Correct oil level? That is simple but easily missed if there were two people working on it.

ol' 93 12 valve

We drove the truck easy today (shift @ 1500 rpms) and it didnt leak at all. Do you think that since the vacuum pump is gear driven that higher rpms may cause it to mess up?

infidel

The vacuum pump is basically a compressor that vents pressure into the crankcase. If there are no leaks on the suction side (vacuum) there is no pressure to vent.
It would be like blocking off the intake to your air compressor.
Yes, the higher the rpms the more air the vacuum pump pumps.

ol' 93 12 valve

fix the problem $5.34 vacuum hose and got it timed. She runs good