Re: Removing the head on a 4.0 Wrangler

Dennis wrote:

> I did the pressure test and the system held pressure with no external
leaks. 
> I like the cotton ball technique, I will try that first.

It works well if the head gasket has indeed been breached.  I like to 
pressurize to 25 psi and hold for at least 10 minutes before I check the 
cylinders so that enough coolant weeps for a good check.  If your cotton
ball 
comes out dry from each cylinder, the head gasket is likely intact.

Be sure that your lifter noise is not actually a crack in the exhaust 
manifold.  Older cast manifolds were prone to this problem.

> The dealer****p replaced the cats and told me that sometimes they just go

> bad.
> I don't know if they tried to determine the cause.

I'm surprised that a reputable mechanic would merely bandage a problem
like 
that.  Most prefer to find the root cause and repair that as well.

> I thought that AC Delco and Mobile One were the best filters.
> If I can determine that the head isn't leaking then I'll try other
brands.
> Purolater and K&N are some that I haven't tried yet.

A good source for oil filter information can be found at:

http://www.knizefamily.net/minimopar/oilfilters/index.html


> Thanks for your response,

Your questions are always welcome here.


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