Quote:
Originally Posted by superapan
Hi people!
My old GW has become impossible to start without running the diesel heater.
The engine was swapped from an M110 to a OM617 in the 90s. The glow relay is manually operated using a switch.
While glowing, am I correct you should feel the plugs becoming hot to the touch? Cause they remain ice cold.
From what I know, if one fail, they all stop glowing (being connected in series). I then measured using a voltmeter between ground and each of the glow plugs, and got solid voltage on all of them. Is it possible to read good voltage on a busted glow plug?
Thanks for any insight  |
You need to measure resistance. A good GP will be under 20 ohms (guesstimate) or so, a bad one could be as high as infinity.
You cannot measure the GP's to ground. you need to measure from one wiggly wire to the next. (one glow plug to the next) In my previous example, all the traffic lights are on one street. That's series. Now imagine 5 streets each with a traffic light, that would be parallel.