ENGINE IGNITION TIMING/MODERN CARS

2010 Infiniti I35

Tiny

Gancho

December, 7, 2010 AT 6:14 PM

Is it true that modern engine timing is accomplished by constant spark plug firing & ignition timing caused by fuel ingjection controled by computer?

FOUND 339 RELATED QUESTIONS

5 Answers

Tiny

Wrenchtech

December, 7, 2010 AT 6:21 PM

Basically, yes. The computer controls fuel injection and ignition timing among many other things. Most cars have a direct ignition system that doesn't use a distributor and firs 2 cylinders simultaneously.

Tiny

fixitmr

December, 7, 2010 AT 6:35 PM

1 cylinder is on compression(fires) the other is wasted spark on exhaust cycle.(4 cyl engine)

Tiny

fixitmr

December, 7, 2010 AT 6:39 PM

Actually the number of cyl is supplied by the number of coils. Each coil having 2 outputs. 4 cyl has 2 coils. 8 cyl 4 coils, 6 cyl 3.

Tiny

fixitmr

December, 7, 2010 AT 6:48 PM

But no constant spark. Only at TDC for each pared cylinders.

Tiny

Wrenchtech

December, 7, 2010 AT 6:56 PM

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