Slow starting when hot

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Jul 7, 2009 | 09:24 PM

#16

Bullitt390

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What don't ya understand there Shooer?

Josh

Jul 7, 2009 | 09:57 PM

#17

vic64

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Try this . Early fire in cylender pushes back agaenst starter causing starter to work
harder , draw more amps and overheat cables.

Jul 7, 2009 | 10:08 PM

#18

vic64

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Justin: As to your problem check for vacume leak.

Jul 7, 2009 | 10:26 PM

#19

shooer

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From: southern cal.

I guess I'm just simple. Be patient with me this last time. I understand that ignition timing dictates when the charge in the chamber actually fires and drives the piston. But.........what I'm sayin' is.....when you are cranking the engine, and it hasn't fired up yet (spark is not igniting the charges in the cylinders yet), why does the timing of the sparking of the plugs (no combustion yet, motor hasn't caught and started running) make the starter work harder? Thats all I'm askin'.

Don

Jul 7, 2009 | 10:49 PM

#20

montana_highboy

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From: Big Sky Country

When you're holding the key in the "start" position the plugs ARE firing and when the mixture is ignited too early the starter will try to turn the crank one way, and the combustion process will try to turn it the other way which results in starter kick back and this situation is aggravated when the engine is hot.

Jul 7, 2009 | 11:03 PM

#21

Bullitt390

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Yeah, it may not seem like it, but the cylinders ARE firing.

Josh

Jul 8, 2009 | 06:46 AM

#22

Justin's Green Truck

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Quote:

Originally Posted by vic64

Justin: As to your problem check for vacume leak.

Ok i will do that. Thanks

Jul 8, 2009 | 07:01 AM

#23

Justin's Green Truck

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Quote:

Originally Posted by shooer

When you are cranking the engine, the engine IS firing, and the spark IS igniting the charges, and there IS combustion. Basically everything that is happening when an engine is operating is happening when its cranking, it's just that during cranking, the starter motor is carrying the engine around to it's next power pulse. Whereas, once the engine is operating, the weight of the flywheel/flexplate has built up the inertia to carry the engine to the next power pulse. Everything has to happen during cranking that happens during operation or the engine never would catch and start running. If you've ever roll-started a vehicle with a manual transmission, you know that you need the key on in order for it to work. This is because the ignition system must be working in order for it to start. With roll starting however, the drive train is turning the engine over instead of the electrical starter motor. But you still always need ignition on a spark ignited engine. Hope that helps.