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  #28  
Old 02-06-2010
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I can't wait for the words of wisdom on the 4.0!!!!
When is it going to start????
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  #29  
Old 02-06-2010
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stop bringing up anything to do with the bloody petrol and leave personal opinions out of the thread FFS. The OP has created a thread designed for diesel owners to discuss the issues they have and prevention/cures - let them be.
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Old 02-06-2010
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Quote:
Originally Posted by murray View Post
i also use cat elc top stuff
I took Murrays advice. The elc is fantastic! How much is the CAT oil Murray?
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  #31  
Old 02-06-2010
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it well priced
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Old 02-06-2010
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what r the worn scratch marks in the thermo wax chamber? what do they mean?
  #33  
Old 02-06-2010
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They don't mean a lot...
They simply mean it's worn out and the valve can be sticky open or do not open as demanded.
The slight angle, caused by the worn marks, can stop to open it- which leads to engine overheat.

Just keep an eye on those things- hey, after ten years of use things do wear out.
Grabbed the thermostat out of the trash to show you:
The wax expansion chamber is located in the middle.
It is a brass tubing. Can you see the shiny brass part? Thats the worn mark- the rest of the chamber is dark due to oxidation which also means coolant was depleated in the past.
This little mark can prevent proper opening of the thermostat.


Last edited by Deezelweazel; 02-06-2010 at 10:15 PM.
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Old 02-06-2010
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Credit to everyone, especially deezelweazel. Interesting read. The tips are excellent for modern diesels and put a good perspective on things. Thanks!
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  #35  
Old 03-06-2010
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Thanks for everyone keeping this thread interesting!

We also have to look at the hoses.

Try to develop some routine inspection- there is nothing wrong with it.
If your friends laugh, let them laugh.
Every pilot inspects his plane for take off- I inspect Radar sets every morning before I activate them from standby to radiate. Failure can cost lives and health.
A hose is easy to replace, heads are costly...

Check them everytime you look into your engine bay!
How do they feel? Don't laugh- it is a real good indicator:
- to soft- not good
- hard and stiff- not good
Check them for being brittle and cracks while squeezing them
replace them as soon as possible if they get bulgy- failure is right to be expected!
I use Armor All with great sucess to keep them flexible.

Do youself a favour and change faulty hoses before you hit the road!
It is asking for trouble!
Do also check the underside of your hoses.
Keep them clean of mud! You want to see difficulties, won't you?
Do not experiment with hose bandages- replace the hoses in advance.

There is no need for Chrysler parts. Ask your hydraulic specialists- they do carry also coolant hoses for the fraction of the Chrysler costs.

One thing I really hate to see on engines coolant hoses are those worm gear clamps.
a)They cut into the rubber( the cheap factory clamps do that too !)
b) They are not able to hold clamping force safely!

Use t-clamps like this:





The reason is (again) simple:
- they do not loosen themselves
- they are easy to loosen with tools even in tight spaces
- they have a consistent pressure on the hose without weakening it
(did you ever get one of those snapping spring clamps to the tip of your fingernails?)
- they are cheaper than original from Chrysler
- stainless steel( but lube the threads with anti-seize to keep them in working condition!)
- do look good
I use them on the intercooler hoses too- no more oil leaks and drips in the driveway!

Last edited by Deezelweazel; 03-06-2010 at 02:37 AM.
  #36  
Old 03-06-2010
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deezelweazel, thanks for the info on th thermo, thanks for the start of this thread.I weekly look over the xj, looking for anything that looks out of place. I actually like doing that, tht way I get total mission reliability.
Im thinking of fitting the tj 6 speed in to the xj. what do u think?
Also why do the engines get oil in the intercoolers?
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