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  2. Engine knocking - Wikipedia

    en.wikipedia.org/wiki/Engine_knocking

    In spark-ignition internal combustion engines, knocking (also knock, detonation, spark knock, pinging or pinking) occurs when combustion of some of the air/fuel mixture in the cylinder does not result from propagation of the flame front ignited by the spark plug, but when one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.

  3. Ignition timing - Wikipedia

    en.wikipedia.org/wiki/Ignition_timing

    Pressure in cylinder pattern in dependence on ignition timing: (a) - misfire, (b) too soon, (c) optimal, (d) too late. In a spark ignition internal combustion engine, ignition timing is the timing, relative to the current piston position and crankshaft angle, of the release of a spark in the combustion chamber near the end of the compression stroke.

  4. Pre-ignition - Wikipedia

    en.wikipedia.org/wiki/Pre-ignition

    In the case of highly supercharged or high compression multi-cylinder engines, pre-ignition can quickly melt or burn pistons since the power generated by other still functioning pistons will force the overheated ones along no matter how early the mix pre-ignites. Many engines have suffered such failure where improper fuel delivery is present.

  5. Dozens of car owners say their vehicles died after filling up ...

    www.aol.com/dozens-car-owners-vehicles-died...

    The seven cars at his business, Millevoi Brothers Richboro Automotive, are experiencing the same problems with fuel pumps, fuel injectors, spark plugs, multiple cylinder misfires and some cars ...

  6. Crankcase dilution - Wikipedia

    en.wikipedia.org/wiki/Crankcase_dilution

    Crankcase dilution is a phenomenon of internal combustion engines in which unburned diesel or gasoline accumulates in the crankcase.Excessively rich fuel mixture or incomplete combustion allows a certain amount of fuel to pass down between the pistons and cylinder walls and dilute the engine oil.

  7. GM recalls nearly 500,000 pickup trucks and SUVs. Here's what ...

    www.aol.com/gm-recalls-nearly-500-000-160625464.html

    "A transmission control valve in some of these vehicles may be susceptible to excess wear over time, resulting in a gradual loss of pressure within the valve that can cause harsh shifting.

  8. Variable Cylinder Management - Wikipedia

    en.wikipedia.org/wiki/Variable_Cylinder_Management

    When VCM disengages, the engine then misfires if needing to clear the cylinder of oil. This unique type of oil consumption has led to premature failure of parts like spark plugs, catalytic converters, engine mounts, pistons/rings, and cylinder walls.

  9. American Airlines flight diverts to JFK after apparent bird ...

    www.aol.com/american-airlines-flight-diverts-jfk...

    An American Airlines flight departing New York's LaGuardia Airport on Thursday evening had to divert to nearby John F. Kennedy International shortly after takeoff after a reported bird strike ...