Knocking from front of engine bay

4l4life

New Member
Joined
Jul 25, 2022
Messages
11
Location
Portland
I got a 97 tj sport manual with a freshly rebuilt head. A knocking noise has made itself apparent starting a couple months ago but has gone from partial noise to constant knocking. It’s residual as long as it’s running, it gets faster when I accelerate. I think the noise is closest to the front by the power steering reservoir
 

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Sounds quiet to me but I'd check the timing chain. On a 4.0 a loose chain sounds more like a knock then the rattle of a chain. It's easy to check moving the crank and feeling for play.
 
Ok so update, belts pulled.timing pulley has 0 play. All the other pulleys spin and the power steering pulley has a little resistance and doesn’t come close to making a full rotation once spun
 
Have you checked for exhaust leaks? It’s hard to hear well In the video but I know it can sound like a ticking or tapping sound. You had your head off so the manifold was too. When I replaced my manifold and gasket I had the bolts loosen up and cause a leak. Had to re torque them with some medium thread locker
 
Have you checked for exhaust leaks? It’s hard to hear well In the video but I know it can sound like a ticking or tapping sound. You had your head off so the manifold was too. When I replaced my manifold and gasket I had the bolts loosen up and cause a leak. Had to re torque them with some medium thread locker

I’ll give that a shot, the wierd thing is it’s just coming from the far front by the power steering housing in the engine. Is that noise from the PS housing normal?
 
Pull the belt and start it up. If it still makes the noise, not the accessory drive.

Won't hurt anything to run it for a min or two.