glow plug question

[slpin]

is it ok to start the truck without waiting for the 'wait to start' light to go off?
i.e. motor is warm (went in to 7-11 to buy a drink), and it would start without the glow plug, so i dont see a reason for it to heat the plugs up? but would that be doing anything bad to the glow plugs or the controller by starting it?

i DO wait for the light to go off when the truck is cold though.

[Logan]

I always wait for mine, I guess a habit I have gotten into. If it is warm and up to operating temp, you should be fine, but I always wait.

[cblackb]

Actually once the motor is warm the "wait to start" light should only be on for a few seconds or less, that's at least how mine works..remember..that light being on and the actual glow plugs turning on are totally seperate operations.

[Clay Henry]

there more things happening here than just glow plugs warming. Your glow plugs actually continue to heat for like 90 seconds AFTER the light goes off. That light going off doesnt' mean its warm inside that cylendar. You should actually wait longer than the light when it's really cold - below 30 degrees.
You are presurizing the fuel system by waiting. It will still start if you don't wait but it may crank longer since the fuel system wasn't allowed to pressure up.
I would say always wait. Its a habbit for me and I even catch myself waiting to start the wifes 05 mustang!

[Sam Burton]

Originally Posted by CHenry

I would say always wait. Its a habbit for me and I even catch myself waiting to start the wifes 05 mustang!

HA HA i do the same thing!! almost every vehicle i start i turn the key on and look for that light. i can't help it.

[slpin]

alright
i suppose i will just always wait

i am wondering, lets say it is a hot restart (i.e. drive thru... ya i can barely hear the speaker and they cant hear me ), even though the light is on, could it mean the truck doesnt even bother heating the plugs up?