chrisz33

Alright guys , this is kind of a wild one.
so i dissambled the engine thinking I had “lifter tick” or a bent valve.
check the valves , they’re fine.
Prior to this , the car was idleing like **** and would stall when the rpms dropped abruptly.
Low oil pressure wasn’t really an issue though.
So with the heads off and everything , when I turn the engine over by hand , after a full rotation , the first piston on the right at the front of the engine , if I touch it , it’ll press down about a centimeter. And it kind sounds like the knocking/ticking sound , just in one instance.
What could that possibly be ?
I also noticed that both sides of the piston are clean of carbon pretty much.


Im thinking maybe spun bearing , but oil didn’t have any stripper glitter , but I just need more input before I assume the worst . Thanks guys.

rancor

If the crank doesn't move and the piston does you have some problem in the bottom end.

Thats a lot of dirt where it shouldn't ever be. I hope you didn't get any in between the rings and cylinder walls.

dkmura

iTrader: (64)

The problem with swapped motors is you have no idea what kind of maintenance this VQ received before you stuck in in. I agree with rancor, if the piston moves that much without any corresponding movement AT ALL from the crank, you've got badly worn rod or main bearings (or both). It's actually a good thing this VQ stopped running; nothing like ventilating the block to reinforce the point the moving surfaces are badly damaged.