Because of coolant loss I was told my engine may have a leaking head
gasket. Over time I tried adding stop leak and head gasket sealers.
Finally I had the intake manifold gasket replaced. But now I still
have a problem which might be due to clogged ports in the intake
manifolds and/or the heads. The coolant steams from the overflow
reservoir as the engine warms up and leaves a bad odor. I'm wondering
if any of that Barrs stop leak material can be flushed out? The
radiator is probably ok as it is fairly new.
Let me guess, you have a 96+ Gen3 Taurus with a 3.0L 2V vulcan engine?
These engines where notorious for built up brown sludge. There is a TSB
on that issue.
I would do a compression check to see if all cylinders are close. If
not, its probably head gasket time. If so, i would do a chemical flush
and reload and see what happens.
Keep in mind if the system has a air leak, it will overflow too.
mine had a leak at the heater hose bypass T
You also need to check your plastic degass tank for cracks.
that will causes issues also
Yes, this is a 99 3.0 engine. Thanks for the suggestions. A
compression test was done with all cylinders l 105 or above.
Cylinders 1 and 2 were somewhat lower than 5 and 6.
The cooling system was flushed last summer but not since the intake
gasket was replaced. The system has been checked for leaks a couple
times. I have a new Ford filler cap on the tank. By plastic "degass"
tank, do you mean the coolant reservoir? I have put an aftermarket
tank in there which seems ok.
I have a '99 Taurus sitting out in the garage right now with a bad head
gasket. Can't keep colant in it because the
leak over-pressurizes the system and pushes it out of the coolant reservoir.
Sometimes on start-up it runs on 5 cylinders until the coolant works it's
way out of cyl. #1, and then smooths out. The heater also doesn't work well
because the combustion leak puts air (combustion gas) into the cooling
system. Any of that sound familiar?
Your description sounds real familiar. I had missing on #1 also and
when the plug was removed I could see both oil and coolant on the
end. But, if compression is good, there's no grey smoke out the
exhaust, manifold vacuum is quite steady, it might just be the intake
manifold that leaks. If it's the U engine with iron heads the odds of
blowing a head gasket are low. Replacment of the intake manifold
gasket appears to have ended coolant loss in my car but the hot engine
It's possible my wagon will need a top overhaul with rebuilt heads but
a car that old is hardly worth the $1600 or so repair bill.
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