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Overheating?
Rod rap?
Bad head gasket?

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18y ago

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Why would the motor make knocking noises on a 1995 Nissan maxima?

It depends on the type of "knocking noises" you're hearing. Usually knocking noises are caused either by spun or worn main bearings, or worn wrist pins. Either way, it means you need a new engine.


What causes a knocking sound when the key is turned on?

A knocking sound when the key is turned on can be caused by several issues, most commonly related to the engine or electrical system. It may indicate a problem with the starter motor, such as a faulty solenoid or a weak battery that struggles to engage the starter. Additionally, loose or damaged components in the engine or transmission can create knocking noises. It's advisable to have the vehicle inspected to identify the exact cause and prevent further damage.


What causes loud noises from engine when first starting then goes away when driving?

not enough oil in the engine.


How does a blown radiator sound?

Typically a single pop followed by some hissing. If you continue driving there may be popping or knocking noises as you ruin the engine.


What causes a tapping noise in the engine of a mini van?

after market oil filter have been known to cause engine noises in kia's


Can the sway bar links be one of the causes for popping or knocking noises when you run over bumps or potholes?

Yes, just about any worn suspension bushing or other wearable part can cause that type of noise.


Why is the fan is making noises on my 2002 ford expedition?

Bad bearing?


My Mazda mellenia make knocking noises from the rear struts?

Worn or loose strut bearing (holder)


What would cause a knocking noise when the engine is cold on a Chevy Tahoe?

There are 2 typical noises that can be called knocking with the engine cold, that descreases or goes away when warm. The first is a minor problem, but still should be corrected before it creates a big problem - one or more hydraulic lifters "stuck"; as the oil heats up this can often clear itself up. The second is a more major problem, and that is connecting rod knock, usually indicating the bushings are bad and will eventually lead to destruction of the engine if not fixed. There are other noises that change with temperature, but these are the most likely ones you have experienced.


Can a faulty oil sending unit create a knocking noise in the engine?

Yes, a faulty oil sending unit can potentially contribute to a knocking noise in the engine. If the oil sending unit fails, it may lead to inaccurate oil pressure readings, which can result in insufficient oil flow and lubrication. This lack of proper lubrication can cause engine components to knock or produce abnormal sounds due to increased friction. However, it's essential to diagnose the root cause, as knocking noises can also stem from other issues, such as worn bearings or piston problems.


What could cause Oldsmobile Alero 3400 v6 knocking noises?

need a new engine most likely. driving dry or on low oil for a few miles will cause that..it will be cheaper for you to just get a used engine with lower miles from a junk yard than taking it apart and rebuilding it..


What causes an engine to make sputtering noises when the gas tank is halful?

You may have a corroded fuel pick up line or a fuel pump that is in need of replacement