dylanaller

i have a knock wont go away wont get worse. myoil is clean. i can't find the source. don't think it's a rod cause it has been like this a while. the sound is metalic andis loud as hell. itdoesn't seem to rob any performance and will hold a 75 shot no problem.

if anyone has any clue please help

1999 GT

its more of a knock than a tick?....i was gonna say maybe the timing chain tensioner but i dont think it is if it's a real bad knock

dylanaller

it's a knock... took my valve cover of cyl 5-8 and they all sound good niose seems to be coming frome the crank going to pull trany today to see if something going on in the bell housing

TrailReadyXJ

I have the same kinda thing going on with mine. It was that way when I bought it (got it REAL cheap), and the previous owner said it had been that way for about 11k, and the sound never got worse.

Originally I was hoping for the timing chain tentioner problem,so I tore into it. The passenger arm was worn, so I replaced itand installed new tentioner, put it back together, and fired it up. It seemed to run and idle much smoother, but the knock is still there [:@]

It sounds too high up in the blockto be a rod bearing, andsounds too loud/deep to bein the heads. It also only does it at light throttle, but not at idle. I'm thinking it could be a wrist pin???

Daveo2k6

i got a knock in my engine too. just started takin out the engine. Im doing a overhaul on it. Waiting to see how my blocks condition is if its still good im just replacing all worn and also getting forged internals. If it is kinda ****ty im gonna get the mmr 600.

fruhdaddy

take a steth scope put it on the block and listen and see where its coming from. It could be a rod? Mains?

TrailReadyXJ

Well... After about 13K miles of having this knock, last night it finally got worse. It still runs smooth, but the noise is there more often, and even at idle. I'm almost certain it's a rod now, definitely in the bottom end.

I guess it's getting parked until I have thetime, and free workspace, to pull the engine.

I would love to go forged, butI'll probably take the "cheap" way out, find a lower mileage junkyard motor, and sell the PI stuff off of it (anyone looking? lol).This ispretty much going to be my dd, it's an "economy car" compared to my other rides [sm=smiley36.gif]. At this point,I really don't plan to ever go more than 400hp in this car...if that.

PS, I'm not trying to hijack...just sharing my experience. I hope you catch yours before more damage is done!