View Full Version : What causes oil in the TB??
06-17-2005, 04:31 PM
workin on my brother's 94. Its a POS but im tryin to get it back to decent running condition. I looked at the TB and its caked with oil. I look inside towards the intake manifold and the walls are caked with oil too. Not a caramel looking color, but almost pure oil. What are the causes and is there an easy clean that I can just spray in there??
06-17-2005, 05:10 PM
PCV oil dealy + EGR gases = 1 nasty TB and intake mani
EDIT: pcv is NOT plastic piping
06-17-2005, 05:24 PM
what he said. check pcv, egr. most likely your culprits.
06-17-2005, 05:36 PM
hmm... any ideas on clean up?
06-17-2005, 05:45 PM
Is it ok for carb cleaner to actually go into/get sucked into the manifold/engine?
06-17-2005, 05:49 PM
06-17-2005, 05:51 PM
PVC for sure, I'd use brake clean on the TB and leave the intake alone unless you want to remove it to clean it correctly
06-17-2005, 09:00 PM
carb clean it like a mofo. its fine if it gets sucked into the engine.
06-18-2005, 01:01 AM
Awesome. Emptying a whole can into it tomorrow then... thanks guys.
06-18-2005, 02:26 AM
That cake up crap happens. Any stock engine will do that no matter what year-model or motor. Its caused by EGR, the PCV system and sometimes backfires.
Nothing to be really worried about because air flows around all that. In a carbeurated motor it doesn't happen because fuel cleans the walls of the intake on its way to the cylinders.
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