Piston slap is the secondary movement of a piston against the side of the cylinder bore, according to Pistonslap.com. This perpendicular moving piston comes into contact with the vertical movement of the cylinder bore, causing the audible noise associated with this phenomenon. All internal combustion engines with pistons and compressors experience a degree of piston slap.Know More
Piston slap occurs when the gap between piston and cylinder is too wide. Through wear and tear, the gap between piston and cylinder becomes wider. The noise associated with piston slap occurs in association with the perpendicular movement of the piston.
According to Dr. Victor Wong of the Massachusetts Institute of Technology, piston slap is one of the most confounding problems of the internal combustion engine. When the piston moves up and down within a cylinder, it moves side to side as well. This movement wastes fuel and causes engine damage as well as the tell-tale banging sound.
MIT researchers have determined through the use of a computer model that more efficient engine designs can reduce the piston slap problem. Through this model, researchers were able to see the path of each piston's movement within the cylinder, the force that it hits the cylinder wall and how the piston changes after impact.Learn More
Symptoms of a cracked cylinder head are identical to those of a blown head gasket and include engine misfires, leaking oil that drains from the engine and the seemingly unexplained presence of coolant fluid in engine oil. Cracks in a vehicle's cylinder head may be large enough to see or may be invisible to the naked eye, and diagnosis of this issue as opposed to issues with similar symptoms, such as a blown head gasket, requires specific techniques including the use of dye and pressure to expose the cracks. Because it can be easily confused with other issues, diagnosing a cracked cylinder head requires more than simple knowledge of symptoms.Full Answer >
An engine's cylinder misfires when ignition occurs at the wrong time or not at all. Because the engine's moving parts must be in exact locations at the moment of the spark, incorrect timing often results in loss of power or a choppy ride.Full Answer >
R134a, also known as HFC-134a, Suva134a, Florasol 134a, Genetron 134a, Forane 134a and 1,1,1,2-Tetraflouroethane is a haloalkane refrigerant that has properties similar to R-12 (dichlorodifluoromethane), but with less ozone depletion potential. It is used primarily for domestic refrigeration and automobile air conditioning and as a propellant for aerosols.Full Answer >
While prices vary by location as well as the make and model of the vehicle, the 2014 national average cost to replace a head gasket is between $1,139 and $1,462, according to Repair Pal. Parts for the repair are relatively inexpensive at $55 to $93; however, the job involves a great deal of labor.Full Answer >