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Discussion Starter #1
Oh great one,


Living in sunny California, and getting in the beast at 5:30am, the temp is about 60 deg.


Do I need to wait for the light to go out before starting it. The same goes for in the pm when it is 80-99 outside.


Thanks


ps: this site is a fountain of knowledge for us the "diesel challenged" folk.Edited by: kbstinky
 

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You should really always wait for the wait to start light to go off before you start it. That is why they call it a wait to start light.
 

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Max Power said:
You should really always wait for the wait to start light to go off before you start it. That is why they call it a wait to start light.
Couldnt have said it better myself. Its better to wait those few seconds.
 

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I've always wondered why. Fuel washing the cylinders? My old cummins intake heater did not even come on with high ambient temps.
 

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My "wait to start" light almost never comes on after sitting 9 hours in a parking space where the air temp is 70* +. Some days I drive the gasser and some days the diesel. Every once in a while I forget I'm in the diesel and crank the starter right after inserting the key. It always starts, but I believe its always better to pay attention to the wait to start light.
 

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Discussion Starter #6
thanks,


You still don't really explain why. I thought it was to heat the glow plugs. Someone else said heat the air.


If I forget to wait, the truck still starts like a champ.
 

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kbstinky said:
thanks,


You still don't really explain why. I thought it was to heat the glow plugs. Someone else said heat the air.


If I forget to wait, the truck still starts like a champ.

As the piston in a diesel engine compresses the air/fuel mixture in the combustion chamber, it is the heat of the compressed air that lights the fuel in a diesel engine. When the compressed air/fuel in a diesel engine are a certain temperature, the engine will start without assistance from glow plugs.
Rudolph Diesel had a great idea.
 
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