Bomer Tom

Ok guys so I recently acquired a 94, the one in my sig. It seems to be building pressure in the crankcase, and then puking oil out the dip stick tube. What do you think could be causing this? I’m thinking maybe the breather is clogged and not venting properly? Any input would be greatly appreciated thanks!

dguru

Look at the hose between the brake booster and the vacuum pump for a "T". Unplug the smaller line and plug the T with a small hose and a nail or something. Then drive it and see if it gets better. The cruise control or A/C controls could be leaking. The booster could be bad but you would complain about bad brakes. It could also be a bad seal in the vacuum pump.

The vacuum pump discharges in the crankcase.

You can see the crankcase vent tube by the starter. Most crud will be near the end of it where you can see it. You can also look at it while its running to inspect blowby after you prove the vacuum system is correct.

Bomer Tom

Thanks dguru! I did exactly what you said and plugged off the vacuum port for the curse control, heater etc. and the crankcase pressure and dip stick oil puking are gone. Any ideas on where the leak might be/ tips on common problem areas? Or am I pretty much on my own just to find a cracked line etc.?

infidel

Most common leak areas are:
An acid corroded line under the driver's side battery to the cruise actuator.
Turbo heat melted line though the firewall.
Disconnected lines in the fuel filter area.
Disconnected lines to the t-case and front axle.

Bomer Tom

Ok awsome i will go through and check those areas and see i can find my problem. thanks for the imput!