my 99 cherokee has a wierd noise when it starts up, but it only last for about 20-30 seconds and then its gone..

i almost sounds like a exhaust leak, or a sticky lifter...something like that

but then it just goes away...

so a exhaust leak would stay there...warm or not

which makes me thing its a rocker or something is dry...until oil gets it lubricated

any ideas?

 

What make oil filter do you have?

 

Do you have the proper amount of oil in there?

 

oil is good, im going to change it tonight with penzoil high mileage 10w-30
and a purolator one oil filter

see if that helps

im assuming he always brought it to the oil change place

 

stethoscope
ATF, if lifters

 

I have a similar issue with my '01 that I am pretty sure is the flex plate, but I'm curious where you're going with this. Please elaborate.

 

this sounds like its coming from the manifold.....but it goes away right after it gets oil to the motor...i will change the oil tonight and see


i will keep everyone posted tonight in what i find

 

well it sounds like i have a exhaust leak coming from the manifold

sounds worse when its cold....


could it be the gasket or do you think the manifold has a crack in it?

 

It isn't the purge valve mounted to the firewall, is it? They can click pretty good when they are active.

If you think it's the manifold, mix up some dish soap and water, wait for the manifold to cool, soak it with the soapy water and watch while someone starts the motor.
You'll see bubbles at the source of the leak.