Re: injector pulse width

A 2% negative duty cycle means the signal driving the frequency valve turns
on the valve 2% of the time, then off for the remaining 98% of the time.

> I don't have a meter or anything that will read injector pulse-width.
> But I do have a dvom that has a dwell setting. My understanding is
> dwell and duty-cycle are very closely related, so that I could read
> the dwell as percentage-duty-cycle and be very close. I believe
> duty-cycle would tell me mostly what I needed to know about the
> injector activity. I don't have a problem just curious. Most general
> auto manuals don't give a pulse-width spec or duty-cycle spec for that
> matter on injectors, factory shop manuals may give that, don't know.
> As long as I can access duty-cycle then I know what the pulse-width is
> doing, correct? The duty-cycle goes up, the pulse-width is increasing.
> I read th injector duty-cycle on my old GM v6, yesterday, the engine
> was at operating temp and idling, the dvom on the 4 cylinder dwell
> setting showed 2.3, I read that as percent duty-cycle, I think to
> convert to duty-cyle it would be a couple of tenths higher, but close
> enough. I did see a spec for injector duty-cycle on warm engine at
> idle, at around 2%, so I guess I'm close. I guess as a diyer, if you
> can't get pulse-width, then duty-cycle will show you what the
> injectors are doing? I'm not saying duty-cycle is better, but if your
> funds limited lik mine, then you use what you got. If what I posted
> isn't correct, then please inform. thanks