Automobile Engineering in ME
Engine misfiring is likely to result from

Incorrect fuel air mixture
Spark plug gap too wide
Spark plug gap too small
Vapours lock in the fuel only

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Automobile Engineering in ME
The function of positive crankcase ventilation (PCV) system is that it

Promotes combustion by creating a swirling movement in the air-fuel mixture
Feeds blow by gases to the exhaust manifold
Returns blow by gases from the crankcase to the intake system
Mixes fuel with air

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