So I just got my car back together and it is starting to me a very unconstant rock pebble noise sounds like little rock or something is bouncing around in the motor. the noise only starts to happen after the car is fully warm

First the car starts to idle surge and then make the noise.

At first we thought it was the head but we had a shop check out the head and everything was fine.

The weird part is if we hold the throttle at basically anything higher then idle the noise goes away.

My last guess is it has to something with the oil like the motor is getting enough and im having metal on metal contact some where making the noise.

my oil pressure is reading around 25-35 at idle. so there is pressure there


if anyone has run into this problem or thinks they know whats going on please help!!!

 

Have you tried using a stethoscope to isolate exactly where the noise is coming from?

A long thin screwdriver, [metal tip as probe, handel end in ear] or wooden dowel, [eiter end works eiter way] can be used as a stethoscope. 94