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scarceller scarceller is offline
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Join Date: Oct 2006
Location: Southern MA
Posts: 3,690
Originally Posted by dfink View Post
This gives 5 shots of fuel just laying around waiting for their turn to be sucked in with the last and final shot.

I'm not sure what you mean by 5 shots of fuel followed by the last and final 6th shot?

My understanding of this system is that it injects 2 shots to EACH injectors per complete power stroke. Meaning 1 shot of fuel for each turn of the crank and all injectors get fired at the same exact time. I also am under the understanding that the fuel delivery timing is fired off of the Top-Dead-Center sensor on the crank. So one shot of fuel every time the crank hits the TDC sensor mark.

This design allows each injector to deliver exactly 1/2 the fuel volume each time the injector fires. This is because the injectors fire 2 times per power stroke.

This is simply my understanding of the Motronic system. I could be wrong, but from everything I've read this is how the system works.

Could you clarify what you mean by 6 shots of fuel? Are you speaking about all injectors? and counting each injector individually?
1984 911 Carrera Cab M491 (Factory Wide Body)
1975 911S Targa (SOLD)
1964 356SC (SOLD)
1987 Ford Mustang LX 5.0 Convertible

Last edited by scarceller; 04-09-2008 at 07:31 AM..
Old 04-09-2008, 06:15 AM
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