aMerICAn_mUsCLe79

Okay i have a 98 Gt with a PI H/I and VT Stage 1 Cams

when i first did the swap the timing chain was off by 2 teeth and made a OBNOXIOUS knocking sound so we fixed it the timing chain adjuster was our problem.

Today i was driving it i got on it very little did not even wind out the gear only to like 4500 rpms... as i was coming to a red light the car started to make a similar knocking noise to when the timing adjuster was off and the car stalled, then started up and was driveable other then the knocking noise, it seemed to be normal but i didn't want to risk it by getting on it.

my question is it possible for timing on the engine to become untimed

I already used a tethoscope to try to isolate the noise and it APPEARs to be coming from the timing chain on the driver side of the block. I took the valve cover off and everything (springs rockers lash adjusters) seems to be alright.

PLEASE HELP! lol

Jbauer

It iscommonfor an engine to lose it's timing- especially as the tensioner and belt gets older;although i think it's suppose to be more rare on chain driven enegines.

aMerICAn_mUsCLe79

Well i just finished the engine work around christmas time

and the bottem end only has 46xxx miles on it

Cams have a couple thousand and the heads have rougly 15k on em

98SN95

any loud knocking noises are probly not gonna be a good thing, and you should def. check your timing assembly, from top to bottom.