Bob,
The ring that looks like an O-ring actually isn't one. It's a
square-edged ring that is supposed to fit snugly into the groove and stay
there when the filter cannister is bolted down to it. But, if the
cannister turns at all, it's possible for the ring to move, bunch up and
to loop slightly onto itself, which makes a most impressive leak happen
fast.
A second ring already in place, jammed in there and almost rock-hard,
can be hard to detect but can also cause this leak.
Bob
On Wed, 23 Aug 2000 00:03:37 EDT BobMGT@aol.com writes:
> I changed the oil in my TD today and put in a new felt oil filter. I
> started
> up the engine, watching the oil gauge. There was the usual
> 'new-filter-oil-pressure-delay' of several seconds. There was also a
> whoosh
> noise I never heard before. I ran the engine for about a minute,
> then I got
> out and found a gigantic oil puddle under the car. The massive leak
> was
> coming from the oil filter canister. The oil level at this point was
> too low
> to register on the dip stick, but I know I hadn't lost pressure as I
> was
> watching the gauge the whole time the engine was running. I replaced
> the new
> sealing ring with another new one and no more leak. I can't figure
> out why
> the canister didn't seal the first time. I've changed the filter
> about a
> hundred times and never had this happen before. Is there some
> technique to
> this that I've never heard about?
>
> Bob Donahue (Still stuck in the '50s)
> EMAIL - BOBMGT@AOL.COM
> 52 MGTD - under DIY restoration NEMGTR #11470
> 71 MGB - AMGBA #96-12029, NAMGBR #7-3336
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