Hey everyone, I used the search to check up on this, but it didn't seem like any of the previous threads covered my specific problem.

I picked up an 01 2wd about 3 months ago, and it has the 4.0 SOHC. I have the Airaid CAI and a Flowmaster exhaust (which to my knowledge should put minimal if any added strain on the engine). She has 93700 miles on her, and about a week ago when I started it up to drive to school in the morning I could hear a metal on metal "tink" coming from the engine compartment (I'm 99% positive it's not the trans from the estimated location of the sound and the smoothness of the shifting). It happens at varying RPM's, it does not happen at a specific time interval, and it doesn't happen (to my knowledge) once the truck is warm...

I've already run a complete fuel system cleaner through it, and used a can of "engine restore" which worked well on my last high mileage vehicle. The noise is still present. No power has been lost, but I'm a bit of a perfectionist when it comes to my cars. Please, any ideas will help... Thanks

 

Timing chains. Common issues with 01-02 4.0's.


BTW, those accesories won't add strain to the engine.

 

Okay, is it something I should be worried about? I understand that the timing chain can make some noise, but it doesn't seem warn to the point of retarded or advanced timing... My idea would be that I should just live with it until it gets bad enough to have to be replaced.

 

Well it will cost quite a bit to fix if the rear timing set is making the noise. Mine makes noise and I have just been driving it. 134000 miles and no problems with it. Mine happens when the engine is cold at around 2600 RPM.

Also they were a problem in the 03 engines as well.

 

Will the timing chain Tick all the time? Mine only ticks around 2300 rmps to 3200 rpms

 

Nope only at a certain RPM range.

 

Hmmm... I think it might actually be coming from the back. That means they would have to pull the engine (or close to it) if I wanted it fixed, huh? Yeah, I think I'll just drive it. My noise is only when it's cold, but I haven't really found the RPM range that it happens at. I pay close attention to it when I drive with my window down in the morning, but it almost seems to be happening randomly.

 

Yup. Engine would have to come out. Not worth it in my opinion. If I'm pulling the engine a newer or reman engine is going in. Hopefully I won't have to before I sell it.