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Cranking pulse widths?

Posted: Fri Apr 06, 2012 3:46 am
by DaveT
Hiya Guys,

Cranking usually takes around 8 to 10 seconds before it catches and bursts into life, if however I gently dab the throttle it will burst into life immediatly. My thinking is that dabbing the throttle allows more air in so therefore it needs less fuel while cranking. But then I wondered if its the acceleration inrichment kicking in and wondered if it requires more fuel while cranking..... Then I was just confused.... Does this behaviour suggest the cranking needs more or less fuel?

Many thanks

Dave

Re: Cranking pulse widths?

Posted: Fri Apr 06, 2012 4:00 am
by Matt Cramer
It sounds like you need less fuel.

Acceleration enrichment is not used below cranking RPM.

Re: Cranking pulse widths?

Posted: Fri Apr 06, 2012 5:20 am
by DaveT
Awesome, thankyou. I'll have a play this afternoon....