Engine oil on the serpintine belt - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 01-15-2000, 10:35 PM
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Engine oil on the serpintine belt

Again 351w 1990 FS I have OIl being slung of of the Serp. belt. I can't find the leak. It doesn't drip while sitting but it is some how making it all the way out to the belt. Pan is dry rocker covers dry What else? Timing cover is all I can think of. Steering pump has been cleared.

Jess Conrad
90' FS Bronco 351 10 MPG hawg!
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post #2 of (permalink) Old 01-17-2000, 08:22 AM
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Re: Engine oil on the serpintine belt

Two possibilities came to mind...
Shaft seal on A/C compressor. Quite often, these will sling refr. oil onto undersides of hoods, but I think that happens when the A/C is engaged, so if its cold by you now, that may not be it. On the other hand, I have seen some leak even when A/C was off, they tended to run downwards and back then. Probably worth eyeballing, anyway.
Crankshaft seal on front of Timing Cover. A lot of times this area ain't the easiest to see into! But you might try using a shot or two of spray-on, hose-off engine cleaner, then watch it every few days. Seal can be replaced without yanking the cover.
I've really gotten into using engine cleaner on leaks the last few years. Saved on opening up stuff that was ok. Something about "Starting out with a clean slate", I think.

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