i need some help

[WSSix]

If your noise is the same as the GTO, then it's the engine. I'm almost 100% that was an engine problem in that video. I say almost because I'm human and not perfect. If it were my car, I'd be going into the heads inspecting the valve train and springs. It's so simple to pull rocker arms and check springs on these engines. There is no valve lash adjustment. You just screw the bolts down and torque them.

If you're going to pull springs to inspect them, I prefer compressed air in each cylinder to hold the valves up. 30-40 psi does fine. You can use a simple lever action compressor or spend the money on a double compressor from Crane Cams.

[Vince@Meanstreets]

Originally Posted by WSSix

If your noise is the same as the GTO, then it's the engine. I'm almost 100% that was an engine problem in that video. I say almost because I'm human and not perfect. If it were my car, I'd be going into the heads inspecting the valve train and springs. It's so simple to pull rocker arms and check springs on these engines. There is no valve lash adjustment. You just screw the bolts down and torque them.

If you're going to pull springs to inspect them, I prefer compressed air in each cylinder to hold the valves up. 30-40 psi does fine. You can use a simple lever action compressor or spend the money on a double compressor from Crane Cams.

I agree, valve train from the speed of the tap.

OP, you can pick up a mechanics stethoscope to pin point the area/cylinder. you can do a cylinder kill test. I would not recommend removing the plug wire to maybe disco the injector connectors one at a time. See if the sound goes away.

[revmopar]

Thanks all, i will try some of this to see if I can find it. I will keep you posted.

[revmopar]

well, rocker arms are fine, push rods are fine, springs are good (however, someone has changed the springs on one side of the engine, yellow springs on right side, plain springs on left side?) Compression check was good, so i am leaning toward a bottom end problem. Still not real sure. Is there any way to test for piston slap?

[revmopar]

I pulled the timing chain cover and there is a lot of slack in the chain, enough to be able to move the cam back and forth so I'm thinking the noise is the chain slapping against the timing chain tensioner.