hole in fuel line inside tank
Could be your exhaust system specically your converter.
starter.......if it makes a turn over noise than its the altanator
Your tire rod is starting to go out
This be a wide range of things does it make the noise when the vehicle is in park and you rev up the engine ? It could be a heat shield on the exhaust system. it does not make the noise if it is just idling....but if you press the gas it makes a noise and when ur driving it makes noise. But I had to put a flang where the header conects to the exaust cuz it was leaking and i thought that was where the noise was comin from but its still makin the noise.
A loose belt that becomes more noticeable at cold temperatures.
/the water circulating noise could be low coolant in the system. If the coolant is bubbling in the overflow bottle, then check for a blown head gasket causing the noise.
It could be a sticking hydraulic lifter or valves that are slightly out of adjustment.
it makes a hollow noise when you pull on it but when it is a normal piece of paper it makes a crinkly noise
Your toilet makes noise when flushing because of the water flowing through the pipes and the movement of the flushing mechanism. The noise is normal and is a result of the water pressure and air being pushed through the system.
Usually any noise from plumbing is caused by air trapped in the system
it is the blend door in the duct system
a parrot makes a screech noise