Why does my Silverado make a knocking noise?

This noise is different from other noises that may begin to occur at 3219-4828 km (2000-3000 mi). The O-ring seal between the oil pump screen and the oil pump may be cut, causing aeration of the oil. Inspect the O-ring seal and replace as necessary.

Why does my engine make a dull knocking noise?

Damaged or worn main bearing noise is revealed by dull thuds or knocks which happen on every engine revolution. This noise is loudest when the engine is under heavy load. Excessive crankshaft end play is indicated by an intermittent rap or knock sharper than a worn main bearing. The following are causes of main bearing noise:

Why is the crankshaft noise so loud under heavy load?

This noise is loudest when the engine is under heavy load. Excessive crankshaft end play is indicated by an intermittent rap or knock sharper than a worn main bearing. The following are causes of main bearing noise: A damaged or worn connecting rod bearing will produce knock under all speeds.

Why does my car make a noise when I Turn on the heat?

An indication of piston slap is a decrease in noise as the engine warms up. When the engine is cold, the piston to bore clearance is greater and piston slap will be louder. A loose or cracked flywheel will produce an irregular thud or click.

What’s the knocking noise coming from MY Suburban?

I recently ran into this same knocking/ ticking issue coming from my 2005 Suburban, 5.3 Vortec. After countless hours of research, multiple engine flushes, oil change, air filter, valve adjustment…etc etc etc…my solution and problem were relatively simple.

Why does my Chevy 5.3L make a ticking noise?

Regarding a ticking noise or misfire on 2005-2014 GM V8 engines. Therefore with AFM (Active Fuel Management, formerly known as displacement on demand (DoD)). Engine ticking or misfires seem to be happening on cylinders 1, 4, 6 and or 7 on the effected engines.

What causes a loud knocking noise in the engine?

Connecting rod knock noise increases in volume with engine speed and is at its loudest on deceleration. The following are causes of connecting rod bearing noise: Excessive bearing clearance. Worn crankshaft connecting rod journal. Thin, diluted or dirty oil and/or filter. Low oil pressure.