piston slap

piston slap

n
(Automotive Engineering) the characteristic sound of a seriously worn piston in a cylinder (usually of the engine of a motor car)
References in periodicals archive ?
Instead of it being located on a crank, the clever design means that the piston slides absolutely vertically on a geared rail so that piston slap is zero.
The piston is roller-guided and is no longer subjected to rod thrust so there is no piston radial stress or piston slap," says Rabhi.
Some of the models that may have a Piston Slap defect are the Chevrolet Camaro, Corvette, Silverado, Tahoe and Surburban; GM Denali and Yukon; Cadillac Escalade and Pontiac TransAm.
Additionally, Piston Slap can cause a reduction in the resale value of their vehicles.
Plaintiff further alleges that in at least four Technical Services Bulletins (TSBs) released by GM in 2001, the company indicates the reason why it failed to admit and fix the defect, namely the replacement of the engine assembly or pistons does not eliminate the noise, thus those affected by Piston Slap would require the installation of new engines to remedy the situation.