Toby and Fellow Spridgeteers,
I know I've said it before, but a leak-down tester is one of best diagnostic
tools you can have in your garage. It'll tell you where you're getting the
coolant from... and a lot more.
WFO Herb
Keep the sticky side down!
Toby Atwater wrote:
> Yep, a few weeks ago I noticed some of that grimy oil\water solution under
> the valve cap, no big deal its just condensation right?
>
> Nope, found the same stuff in the radiator, on the dip stick and again under
> the valve cap. When the engine warmed up I was getting steam out the
> tailpipe, out the vented valve cover cap (looked liked a geyser!), and out
> the crankcase ventilation hose (not hooked up to a PCV valve, just pointed
> down towards the road)
>
> I ran a compression test and I think I passed with flying colors... here are
> the results (rounded to the nearest fifth) averaged over 6 readings on all 4
> cylinders. All tests done with throttle WIDE open, air filter off, and all
> spark plugs out.
>
> Without oil
> 1) 160
> 2) 155
> 3) 150
> 4) 160
>
> With a tablespoon of motor oil down each plug hole.
> 1) 185
> 2) 180
> 3) 175
> 4) 180
>
> My dad is stumped. He and I agree that when head gaskets blow, or heads
> crack, they always do so outwards from a combustion chamber where the
> pressure is greatest. Thus showing up in the compression tests.
> I am in the process of flushing both the oil system, and coolant system
> separately. I will then top up with fresh oil (and new oil filter) and pure
> water and try to replicate the oil\water gunk.
>
> Does anybody have any leads? Theories?
>
> Thanks much,
>
> Toby, who is heading to Pep Boys to get some cheap motor oil... its useful
> to flush the oil system a few times with it, then top up with the good
> stuff. (Valvoline Racing oil! Is that extra 25 cents a quart worth the name
> "racing oil" sure... it makes you go faster! at least in your mind it does)
>
> 1971 Toyota Land Cruiser
> 1969 Austin Healey Sprite.
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