15 revolution per second 900/60=15 60 seconds in a minute divide by 60 to get number of revolution per second
As the engine revolutions increase, so does the noise from the engine as it is working harder as opposed to being still idling. Also, could be a leak in your exhaust system that could be the cause of the additional noise.
A car that is stopped with the engine running.
water in the fuel can cause an idling motor to sputter and/or die.
yes
check the engine mounts
an idling diesel engine or snoring :]
Yes, "sparkling plugs" is definitely detrimental to idling or smooth running of an engine
Engine idling in park
The fan clutch is not functioning properly. Replace.
NO not that engine.
Depends on car since idle speed varies among models but it usually around 750- that would be 12.5 in 1 second.
Engine idling in park.