Re: Removing the head on a 4.0 Wrangler

Dennis wrote:

> I was using Fram filters and the lifters would clatter on hot or cold
start 
> ups. I now use AC Delco or Mobile One filters.  The lifters still
clatter 
> but only on cold starts and they
> quiet down after a couple of seconds. I figure if they clatter at all
this 
> can't be good and it will just get worse so that's why I thought that
they 
> should be replaced.

If the oil is still draining out of the valvetrain assembly after the
engine 
is shut down, continue your search for a filter with a decent
anti-drainback 
valve.

> I also suspect it could have a bad head gasket. It's using about a quart
of 
> anti- freeze a month. There are no obvious leaks and I can't figure out 
> where else the anti-freeze is going. There are no other clues of a bad
head 
> gasket.
> We bought the Jeep new so I know that it has never over heated which
makes 
> it hard to believe that the head gasket could be bad.
> But where else could the anti-freeze be going except out the exhaust. 
> Recently got a check engine light saying the cat. converter was bad.
>  I understand that coolant in the exhaust can cause the converters to
fail 
> prematurely.

It's obvious you have a coolant leak, but WHERE is the question.  My best 
suggestion: pressurize the cooling system and look for external leaks
first. 
(Any good mechanic can perform this test for you.)

If you see nothing external but the system will not hold pressure, next
step 
is to remove all spark plugs and examine each cylinder for the presence of

coolant intrusion.  I've often used a simple grabber-tool with a cotton
ball 
on the end, inserted into each cylinder after pressurization to find
coolant.

What did the mechanic that replaced your cats say about the cause?

> Any thoughts or guidance would be appreciated. ( Please don't say buy a 
> Ford, my wife loves her Jeep)

I would never counsel anyone by buy a Ford product.  Not even my worst
enemy.

-Outatime
Wheelin'-n-Grinnin' in Central CA, USA

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