Oil up the Valve cover case vent tube - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 01-20-2000, 06:29 PM
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Oil up the Valve cover case vent tube

My air filter is getting nasty- smells of fuel and has sticky oily substance where the hose/tube comes from the valve cover vent/PCP valve.

Is this because I have too much oil in the system? So much that it is being flung upwards and out the hose as the engine operates?

Anyone had similar problem?

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post #2 of (permalink) Old 01-21-2000, 08:20 AM
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Re: Oil up the Valve cover case vent tube

I'll bet your oil level is OK. Your engine has a hose going from the valve cover to the air filter housing with a hose teeing off and going to a fitting on the rear left side of the block. The fitting on the block is PVC valve. Replace the PVC valve then replace the hose between the PVC valve and the tee it is often plugged with oil sludge. Can also clean out the sludge in the hose usein solvent and poking a wire though the hose.

post #3 of (permalink) Old 01-21-2000, 10:51 AM
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Re: Oil up the Valve cover case vent tube

Oops- I thought PCP did not sound right when I typed it! Hope the DEA does not monitor this site!

I recently replaced all the hosing under the hood (previous owners still had 1987 originals in there)- I was wondering what might have caused the crud/sludge in the first place?

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post #4 of (permalink) Old 01-21-2000, 08:33 PM
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Re: Oil up the Valve cover case vent tube

It could be caused by not having a thermostat keeping it at operating temp.

Not having the exhaust preheat system hooked up causes engine to take 10 minutes to heat up instead of 2 minutes. Throw in
stop and go driving.

In the frozen north part of the radiator has to be blocked to get engine to operating temp at all or in a timely manner.

The above means water stays in the oil instead of boiling away. This is major cause of sludge.

Also not doing oil changes will cause sludge.

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