Injector Pulse Width
Injector pulse width is how long the engine control unit holds a fuel injector open on each cycle.
What is Injector Pulse Width?
It is measured in milliseconds. It increases with engine load and when more fuel is needed. It is shown in live data on many scan tools. Direct injection systems may split injection into several pulses.
How it works
The longer the injector stays open at a given pressure, the more fuel it delivers.
Why it matters for your car
Unusually long pulse widths can point to air leaks or low fuel pressure. Values depend on fuel pressure, so compare them with the correct specification.
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