Glow plug/Wait light duration

[TyJustice]

If one or more glow plugs are out, will the wait light and or duration of the glow plug cycle become shortend.

Tried a search, but couldnt find that particular question.

Thanks

 

[Chief_919]

No.

 

[raiburn]

I had 3 good glow plugs, and my wait light and duration of glow plug cycle was about 4-6 seconds in warm temps. Once all eight were burned out, i could hear the solinoid clicking open and closed in about 1 second intervals. (confirmed with a voltage test). After i replaced glow plugs, it went right back to 4-6 second cycle.

I'm sure this just adds to the confusion... Sorry 'bout that.

 

[TyJustice]

Thanks for the replies.

I pulled the plugs due to hard starting this last week and found three that needed to be replaced.

The military had put in a large order this month and the suppliers are out until first week of Oct.

But, when the hard starting began I noticed that my wait light on warm up seemed to be cut in half. I check the card and everything looked ok and I changed the relay just in case it was the cause.

I'll just have to wait for the plugs and go from there.

 

[mangus580]

Yes it will. The timing cycle is based off the total resistance in the system. As the resistance drops (dead plugs) each plug will see a higher voltage, and the cycle will shorten some.

 

[raiburn]

O'reilly Auto Parts has A/C Delco G60 glow plugs in stock for $9 each. They are anti-swell, and self-regulating.