so out of no where i have this knocking noise, its coming from the around the drive belt and timing belt area if you put a screw driver oil pump you can hear it. no noise at idle, oil pressure is like 16-20 at idle around 100 at wot 40- 60 cruising. comp test is 180 psi acrossed the board. took drive belt off and noise is still there. any ideas?

 

it makes the noise when the car is sitting there and you rev the engine?

search youtube for rodknock and see if it sounds similar

 

rod knock would happen at idle, this is only 2k-4k

 

nope, i know cause my knock (rodknock) only came around on quick engine revs around 3000 rpm.

it made no knocking noise at idle

notice my sig

 

Waterpump?

 

a video would help quite a bit...the only thing that comes to mind is piston slap but i would hope that it's not that. there's no smoke out the exhaust or anything?

 

As stated above rod knock does not necessarily happen at idle but does come allot more pronounced as it is reved higher. Get a stethascope "cheap at Shucks or Napa" and start playing doctor.

Chris

 

Can rod knock be heard when the engine is cold or only after it was warmed up?

 

i data logged car last night, octane level was in the low - mid 90's, so bad gas, i went put in some race gas drove her around, and knock went away. Drove it today going to the womens work going about 60 while data logging, no knock counts, and then vap vap vap, spun bearing on 1.