the 4.0 is known for noisy injectors making a clicking sound. they are also known for their lifters getting noisy with lack of proper maintenance.

 

Or the lifters getting noisy despite spectacular maintenance.

 

Lifter noise fix

 

Take a voltmeter to the driver side door switch. Your problem is probably in the wiring going to the switch.

 

Hard to say how long it was driven with the tick, if it is lifters it might be too late to at least mitigate the tick.

 

I was tryinng to search it not post. It

 

Congratulations on getting a Cherokee. It sounds like you got a good deal. I have a 99 SPORT WITH 45,000 miles. paid 2200.00 for it. keep working on the fixes. note: Bigger tires = poorer mileage.

 

Ticking is common on the 4.0, and isn't always a sign of something bad. Any idea where the noise is coming from? Is it the same hot/cold? Any change with rpm?

 

I could understand a light tick, this tick matches RPMs and has a chattering sound when I hit the throttle by hand. It doenst matter the engine temp, it always does it.
Who here thinks I'm safe driving this for a few months until I can get it fixed (having certified the problem of course). The repairs wouldn't be beyond my abilities I just have another project occupying garage space.
If it is a bad lifter, can that one lifter be rebuilt?

 

And the better chance of getting. Chicks

 

Is it common too for the rocker arms to loosen and cause the ticking?
Anyone have a cost figure to have the valvetrain replaced by a shop?

 

Not common for the rockers to loosen.
Most common issue is a bent pushrod or bad/sticky lifter.

 

If it is a collapsed lifter, that means the spring inside is shot? Couldn't the spring inside be replaced instead, keeping the lifter thats mated to the cam?

 

Sometimes you can get a lifter to unstick using an engine flush or the like.

 

After many miles of running with a stuck lifter wouldn't the spring be pretty well dead? Buy a set of new lifters and use the new springs only, I see no harm in it to the engine