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If the knock increases with wheel speed and stays if you press the clutch its probably a semi-siezed wheel bearing. The engine gets hot as its having to work hard to overcome the bearings friction. If the knock is when accelerating or decelerating is probably a badly worn rear axle CV joint, although this would not make the engine hot? If the knock is from the engine then its rebuild time, probably a little end worn causing the piston to slap on the gudgeon pin creating the knock. Hope this helps
What else can I help you with?
Car makes loud knocking sound at high speeds?
A loud knocking noise in the motor of a car at high speeds is most likely the engine. There could be another issue with the transmission if the knocking only happens at high speeds.
Why are my water pipes making a knocking sound?
The knocking sound in your water pipes is likely caused by a phenomenon called water hammer. This occurs when the flow of water is suddenly stopped or redirected, causing a pressure surge that creates the knocking noise. It can be caused by factors such as high water pressure, loose pipes, or a malfunctioning valve. Addressing the root cause can help eliminate the knocking sound in your pipes.
Why are my pipes making a knocking sound when the water is not running?
The knocking sound in your pipes when water is not running is likely due to a phenomenon called water hammer. Water hammer occurs when water flow is suddenly stopped or redirected, causing a shockwave that creates the knocking sound. This can be caused by loose pipes, high water pressure, or faulty valves. It is important to address this issue to prevent damage to your plumbing system.
Why are my pipes making a knocking sound?
Pipes can make a knocking sound due to water hammer, which happens when water flow is suddenly stopped or redirected, causing pressure to build up and create the noise. This can be caused by loose pipes, high water pressure, or a faulty valve.
What is the maximum sound speed limit?
It depends on conditions. It has a high speed in Metals with high temperature.
When is the speed of sound near the ground less than the speed of sound higher up?
If the speed of sound near the ground is less than the speed of sound higher then in this special case the temperature at the ground must be less than the temperature higher up. Usually the temperature at the ground is warmer than the temperature high up in the sky. The speed of sound changes mainly with the temperature.
What could be causing the loud pipe knocking sound coming from the plumbing in my house?
The loud pipe knocking sound in your plumbing could be caused by water hammer, which occurs when water flow is suddenly stopped or redirected, causing pipes to vibrate and create noise. This can be due to high water pressure, loose pipes, or improper installation of valves.
What does high pressure do to sound?
High pressure can increase the speed of sound transmission and alter the frequency of sound waves. It can also affect the way sound is perceived by the human ear, potentially causing discomfort or distortion in hearing.
When applying the brakes why is there a knocking sound from the drum brakes?
I would advise bringing your car to a mechanic as quickly as possible. Your brakes could fail. This puts you at a high risk for injury or even death.
Are sound waves the moving areas of high and low pressure?
Sound waves don't change with high or low pressure, but with temperature, because then the speed of sound is changing. Look ath the link: "Speed of Sound in Air and the effective Temperature".
How does air tempurature affect the speed of sound?
Sound waves travel through particle vibration, and when the temperature is high, the particles vibrate faster, thus the sound must travel faster with particles.
What is the difference between your car making a knocking sound and a ticking sound?
There is probably too much clearance between the rods and the crankshaft causing the motor to knock. If this is the case you need an overhaul job on the engine. The clicking sound is probably cause from using too low octane gas or your firing is set a little too high. http://www.autozone.com/servlet/UiBroker?UseCase=S001&UserAction=viewSimpleDiagInfo&Parameters=info answer knocking sound comes from worn bearings and parts in lower engine ticking comes from tappets, or more specifically the hydraulic lifters in engine ticking sound can also be a small exhaust manifold leak
