4.0L timing chain ?
hey guys, i had my jeep running in the driveway and well....i herd 2 noises under the hood that could be herd over the engine running, the common wrist pin knock which its had forever, and a new noise, almost like a grinding noise, it sounds louder underneath the jeep and its near the front of the motor, sounds closest to the #1, 2 and 3 pistons !!!...im afraid it could be the timing chain ?? but i have no way to check , i tried the screwdriver method with it running (scary!!) against the cover below the alternator i didnt hear grinding from that cover, but im just curious, has anyone ever herd of the timing chain snapping with a 4.0L or are they known to be reliable to see 400 or 500 k on a engine ??
whats the chances of my timing chain breaking on my 4.0L , are they known to snap, like is it common on a high mileage 4.0? ? ?
and if it ever broke which it will have to before i replace it, is the 4.0L a interference or non-interference engine ?? will it smash the valves or can i just install a new chain and head back to the streets
1993 Jeep Grand Cherokee Limited
Green/Gold, Tan Leather
4.0L , 42RE transmission-- 242 selectable transfer case
Bone Stock with the acception of a K+N drop in filter and my aftermarket stereo, also did alot of new tune up wear and tear parts!
366 000 kilometers and stilll runs great :)
purchased for $125 bucks, amazing daily driver for the money