3.7L V6 noisy lifters with video

Sounds to me like a failed timing chain tensioner and or chain guide. I have seen several 3.7s with the same problem. I suggest you have it checked by a professional before the chain jumps and causes more damage.

Did you have the noise before or after the repair? Maybe someone should go over their work.

[quote=”teeje1469″ post=132226]Took it to the mechanic who did the work said it was just a lifter not to worry about it. Drove it to work (just now got home) at 1020 pm. Got about 2 miles down the e-way and it starting “jumping” and went back to normal. Quarter mile down the road couldnt rev past 2k and lost power. Pulled to the side of the road had my grandpa tow me home. Said it sounds like it jumped timing. I tried starting it before and it popped loud and smoke came from the engine. If this 3.7 jumped timing or a tensioner/chain/sprocket broke, what damage could each of these cause?[/quote] So this was after a timing chain job. Sounds like he didn’t do the job correctly and/or used bad parts. I believe the 3.7 is an interference motor if memory serves correct. This means that if the chain breaks, or if the timing is too far off, the valves can and will hit the pistons. In most cases, your looking at valve train damage. Best case scenario the valves didn’t hit the pistons and the chain will just need to be redone.

Definitely sounds like you jumped the gears that pop was a massive backfire for the valves being out of time with the ignition, the damage really depends from car to car, the only thing you can do is to dig in and take a look, if you are really curious about maybe a lifter issue go ahead and yank off the valve cover, that isn’t a big job, but I can almost bet the chain was loose and rattling causing the noise. Then it jumped causing the valves to be out of time and then lack of power and eventually the loss of power. like chevyman said, best case scenario is you take off the chain cover, hook it up, and then it will be done.

[quote=”teeje1469″ post=132228]Job was done in July if my memory serves me correct. Im pissed because most of the engine, interior, and paint are new now it just sits there looking pretty and no where to go. Taking it to a family friend who owns an actual shop this time.

EDIT: If im wrong and it wasnt the chain, what if a lifter/lifter failed? What would that cause?[/quote] A failed lifter could cause a worn cam lobe, misfire in that cylinder etc. It depends on the way it failed, on what valve(intake or exhaust), and how long it was run that way. In any case, I would not go back to that mechanic.