How To Tell Which Lifters Are Faulty

[boz_soljah]

Hi just wondering if anyone knows how to tell which lifters are faulty on a rb20det motor. I've got some bad lifter noise/rattle coming from the middle of the rocket cover around 3000 rpm. I've got spare lifters but not to sure how to tell if there good or bad or how to tell which ones are faulty in my motor.

Thanks

[DVS JEZ]

3000rpm is more than likely a bigend bearing. Sorry to be the bearer of bad news but i hope im wrong.

Try disconnecting the coil pack on cylinder 3 when its rattling and see if it stops or not. Try cyl 2 and 4 aswell. Try each cylinder 1 at a time. If it goes quiet then that is ur cylinder with the dud bearing or piston.

Do an oil change and see if there is metallic particles in the oil.