Engine Piston Ring Failure – Causes :
It’s not always easy to determine when, or if,an engine should be completely overhauled, as a number of factors must be considered. High mileage is not necessarily an indication that an overhaul is needed, while low mileage doesn’t preclude the need for overhaul. Frequency of servicing is probably the most important consideration. An engine that’t had regular and frequent oil and filter changes, as well as other required maintenance, will most likely give many thousands of miles of reliable service. Neglected engine may require an overhaul very early in its life.
Engine Piston Excessive Oil Consumption
Is an indication that the piston rings, valve seals and or valve guide are in need of attention. Only you must be sure that oil leak aren’t responsible before deciding that the rings and the guides are bad. Have cylinder head compression or leak down test performed by an experienced mechanic.
If the engine is making obvious knocking or rumbling noises, the connecting rod and main bearing may be at fault. Check oil pressure and compare it to the specifications.If it’s extremely low,the bearing and the oil pump are probably worn out.
Loss Of Power
Loss of power, rough running, excessive valve train noise and high fuel consumption rates may also point to the need for overhaul, specially if they are all present at the same time. If a complete tune-up doesn’t remedy the situation, major mechanical work is the only solution.
An engine overhaul involves restoring the internal parts to the specification of a new engine. During an overhaul, the piston rings are replaced and the cylinder walls are reconditioned (Rebored and or honed). If a rebore is done, new pistons are required. The main and connecting rod bearing are generally replaced with new ones and if necessary the crankshaft may be reground to restore the journals.Generally the valves are serviced as well since they are usually in less than perfect condition as this point.While the engine is being overhauled, other components, such as starter and the alternator, can be rebuilt as well.The end result should be like new engine that will give many troubles free miles.
Change And Replace Components:
Cooling system components such as the hoses, drive belt, thermostat and the water pump and oil pump must be replaced with new parts when an engine is overhauled.The radiator should be checked carefully to ensure that it isn’t clogged or leaking, if in doubt , replace it with a new one.
There are several distinct types of the engine piston failures attributed to different causes . Engine piston failures.
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