noises Flashcards
What is piston slap?
piston “slapping” on sides of cylinder due to worn piston rings, piston pins, excessive piston to wall clearance
What sound is described as hollow and bell like?
Piston Slap
What sound is describe as a high pitched rattle or clicking?
ring noise
When is piston slap typically heard?
cold engine start and louder during during acceleration
Desrcibe piston pin knock
sharp metallic rap
when is piston knock present
hot engine idle operation
describe main bearing noise
dull, steady knock
what casues main bearing noise
work bearings and/or crankshaft
describe tappet noise
light regular clicking
when is tappet noise present
idle
what is the cause of tappet noise
improper valve adjustment, worn or damaged valve train, ditry dydraulic lifters
what can be described as a heavy thumping
thrust bearing noise
when is thrust bearing noise present
may only be heard during acceleration
what noise can be described as light tap or heavy knocking or pounding
rod bearing noise
