As for the water pump leak, maybe your pressure cap is not working?
Nelson Wright
78 Royal rear bath
Belle Isle Fl
Sent from my iPad
>
> Last year i had an opportunity to work underneath the coach, parked over a work pit at a Tijuana garage,
> where they had one of those air compressor blowers that could mix in liquids… degreasers!
> So after they finished doing the valve cover gaskets, and while waiting for the silicone to dry,
> i started with the standard engine cleaner foam from autozone, working my way down;
> then got underneath the coach to start scraping off the first layers of heavy build up…
> what Will was calling the “undercoating”!
> Then put on goggles, gloves, hat and work clothes ready to be tossed,
> and began the job with this little toy
https://www.amazon.com/gp/product/B07F9YFFCG/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1 with a bottle filled with Purple degreaser, taking on probably 15 years of oil leaks here and there.
> The build up was so extensive that this day-long Tijuana work pit adventure barely scratched the surface,
>
> but after the drive home, i could confirm that the leaking was not just the valve cover gaskets,
> but also various areas on the intake manifold seal. So last week, when i was removing the distributor for refurbishing,
> i finally got an opportunity to finish the de-greasing job here at home.
> And as an experiment (‘cause i don’t have time to replace the manifold gasket right now)
> I slightly loosened a few bolts of the rear of the intake manifold, then spread a few layers of ultra black silicone at the seals,
> and tightened them back up. After 100 miles of driving this weekend, it looks like this method fixed one of the 2 leaks in that area…
> and that the other leak is now extremely minor. I can also see that the leak at the front of the intake manifold needs attention
> and might benefit from the external silicone / tightening method (but it sure is harder to get to!).
>
> If i didn’t have to remove the distributor otherwise, i probably would not have gotten around to these experiments.
>
> Addendum, Other Leaks:
> Next will be the Eleganza transmission leak mystery that i’ve been dealing with for 7 years!.. trying to find the source
> (I’ve read many of the postings here about tranny leaks, so i’ll start with a fresh cleaning and 50 mile test drive)
> Purple degreaser came highly recommended, but it might not be the best thing to put in the spray gun bottle.
> Any other recommendations for that? or are the degreasers probably best to just spray on with a windex type bottle,...
> let it sink in, and then use the spray gun with straight water for rinsing? or of course just get a bunch of cans of aerosol engine cleaner,
> brake cleaner… but at some point i’m thinking of environmental impact, as well as economic.. when cleaning a long-neglected undercarriage.
>
> Lastly, it looks like the Birchhaven's water pump stopped leaking.
> For a few months last year, it’d spit out a bit after turning off the engine after a long drive;
> and i’ve been keeping my eyes open, plus bought the Cardone pump to have on hand if needed.
> But for the past 3 months and 400 miles, i haven’t seen any coolant on the driveway or the pulley.
> So how many votes for “you better change the pump ASAP anyway”, vs. “keep your eye on it, and change if it starts leaking again”?
> What could cause a leaking seal to stop leaking? I didn’t add any stop-leak or anything.
>
> Cheers,
> Greg / SolarSonic / LosAngeles
>
>> I've had a similar issue on my 455. Turned out to be the front intake manifold seal..
>> Scott.
>
>
>
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