Hello i have a 1991 toyota pickup and the problem is that when i reach about 2500 RPM i hear a knocking noise. It only does that at high RPM.
Jun 3, 2011 at 8:36 PM
knocking noise
1991 TOYOTA PICKUP
BERSYL671
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What type of knocking noises are you hearing-is it coming from the engine or somewhere else. The engine could pinging/detonating
Jun 3, 2011 at 8:42 PM
It's coming from the engine. I let someone rev up the RPM and i can hear it in the engine, underneath. Even on just a steady motion, car not in gear at idle and stepping on the throttle at 2500 RPM you can hear it.
Jun 3, 2011 at 11:06 PM
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Could be worned valves and valve lifters/camshaft-if its more like a ticking/tapping noises-check oil pressure with a mechanical gauge
Jun 3, 2011 at 11:19 PM
It's more of a heavy clonk noise. The compression test is #1 155psi #2 125psi also #3&4 at 125psi
Jun 4, 2011 at 2:59 AM
Sounds like engine bearings rod/main- check the oil pressure
Jun 4, 2011 at 6:04 PM
how you check the oil pressure.
Jun 4, 2011 at 9:09 PM