Lifters tap or tick, rods/pistons knock or klunk....you can narrow it down by watching what rpm & conditions that occur when you hear the noise. Rod knocks tend to occur (be loudest) in each gear, at low RPM w/ a heavy load on (getting on the gas). Lifters are constant & not really dependant on load.
For instance, I have a noise that sounds exactly like a rod knock.....but it only occurs in 1st gear under light load. Won't happen in any other gear, or neutral, or coasting or heavy load. I'm 95% sure that it's the POS BA-10 tranny on it's way out.
You can check for a rod knock by putting the tranny in drive, stomping on the brake & also trying to accelerate (moderately, for a second or so)....if you have a rod/main bearing going out, it'll make the noise then.
probably out breaking stuff.
Last edited by Beachcruiser; 02-23-2012 at 06:15 AM..
Reason: Checked profile for transmission type