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Exploring Engine Noises – Vibrations – Diagnose Before You Fix:
Valve Train Noise
So, Valve and hydraulic lifter noise has a clicking sound; that usually quiets down as you raise the engine RPM’s.
Timing Chain Noise
So, Many of the newer engines have; overhead camshafts with longer timing chains. As a result, The chains ride against a nylon guide (a chain guide) which; in time, begins to wear.
Detonation, Pre-Ignition (Pinging) Noise
You usually hear this noise; when accelerating the vehicle. Consequently, Most people call this a; pinging or rattling sound.
Connecting Rod Noise
So, Connecting rod noise is caused by; excessive clearance between; the crankshaft and the connecting rod bearing surface. This happens when you have low oil pressure; causing the bearing to run dry of lubrication; which in turn will damage the bearing and crankshaft surfaces.
Crankshaft Bearing Noise
Crankshaft bearing noise is also caused by low oil pressure; which damages the bearing surfaces and could; eventually damage the crankshaft itself. This type of noise is usually described as a; rumbling or thumping sound deep in the engine when accelerating.
Consequently, This noise is caused by; excessive clearance between the piston skirt and the cylinder wall. As a result, is usually found on high mileage vehicles.
Piston Pin Noise
Similarly, Piston pin noise is similar to valve train noise.
A whining noise when an engine is running; is usually an indication of a bearing that is on the verge of failure. Consequently, This noise will increase as the engine RPMs increase.
Exploring Engine Noises – Vibrations – Diagnose Before You Fix
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