BeepBeepRR
Well-Known Member
I have been working on this issue all day. The car is a 70 GTX 440. The car has valvetrain noise all the time. And I have been trying to trouble shoot the problem.
Thought it was fuel starvation. replaced a worn fuel pump rod. Didnt help.
Checked timing. Didnt help
Checked plugs all looked decent and were not either white or black.
Swapped carbs to a known good carb. No change in the engine.
Checked the rotor button and cap both looked good. This is a fairly new MSD RTR distributor.
It has a new set of MSD 8.5mm wires. They are all in good shape.
It was running fine until Friday. All he did to the car that day was change out the air cleaner. I checked coil voltage 13.64 when running. Im boggled and wonder if the cam is wiped and that is why its breaking up above 2500 rpms. I think its more between 2100 and 2500.
Any good way to check the cam for wear besides just pulling it?
Thought it was fuel starvation. replaced a worn fuel pump rod. Didnt help.
Checked timing. Didnt help
Checked plugs all looked decent and were not either white or black.
Swapped carbs to a known good carb. No change in the engine.
Checked the rotor button and cap both looked good. This is a fairly new MSD RTR distributor.
It has a new set of MSD 8.5mm wires. They are all in good shape.
It was running fine until Friday. All he did to the car that day was change out the air cleaner. I checked coil voltage 13.64 when running. Im boggled and wonder if the cam is wiped and that is why its breaking up above 2500 rpms. I think its more between 2100 and 2500.
Any good way to check the cam for wear besides just pulling it?