Hi All,

I just finished changing all of my glow plugs ( thank Godthe old ones were Beru) with 8 new Beru glow plugs. Six of my 8 didn't work any more.I turned the key to start the glow plug cycle and the light goes on for like 3-4 seconds. I hear the relay click and then click like 2-3 seconds later and does it again over and over. Still no start. I pulled out one of the g/p's and laid it on the intake and cycled the plugs again and it didn't even warm up. I was able to hold it. Help please. Do I change the relay??? Thanks for any help.
Mike

 

use a test light or voltmeter to check for power to the glow plug when the relay is on. check it at the relay also. laying the glowplug on the intake might not provide a good enough ground to heat it up

 

And the multiple clicking is normal. Once it finishes the long cycle, it will short cycle the plugs to help eliminate the smoke on start-up.

Best thing I ever did to mine was put a manual pushbutton on it for the glowplugs.

 

What plugs do you use and how long do you keep them lit? Where do I find this type of relay? Thanks all for the input.
Mike

 

I am supposing you have a 6.9 with the older glowplug setup. I have the newer setup on a 7.3, and the relay is pretty much like the starter solenoid on the inner fender. I would do some testing with a meter before you replace it. Yours might even be mounted on the pass fender correct? Mine is mounted behind the air cleaner.

 

That's correct. It's on the passenger fender. I will do some poking around and check some grounds too.Thanks
Mike

 

What is a good brand of manual controller? I would prefer to control it myself.Less to go wrong with manual I would imagine.Thanks again.
Mike

 

There is no manual controller you can buy. You just convert yours over. If you have found the large relay, basically it has two large terminals, one incoming power and one outgoing to the glowplugs.

If you make sure you have power coming in, then when you put power on one of the smaller terminals, it activates the relay and connects the two large terminals together, sending power to the glowplugs.

I have never converted a older setup like you have, but basically if you have two small terminals on the relay, one will be ground and the other will be 12v. If you want to test this out, ground one small terminal and take a short wire and touch the other small terminal to the bat +. The relay should click. If you get this far, then all you have to do is go to the store and buy a decent sized pushbutton switch, mount it in or under the dash, run power to it, and then run another wire from the switch out to the 12v terminal on the relay. Each time you push the switch, the relay will activate and the glowplugs will heat.

I usually short cycle my glowplugs because I am afraid to burn them up. I hold the button in for about 5 seconds, and then crank the engine about 3 revolutions. I then hold the button another 5 seconds and then crank it again, and in the summer it will fire. In the winter it won't quite go and hit them again for another 5 seconds, and it will take off. If it's really cold, you can hold them on a little longer, but not over 10 seconds. It's not very difficult to get the hang of it, and even if you have a couple of bad glowplugs, it will still fire off on a cold winter day with the manual switch.

 

Thanks for that reply.Very helpful.A little weekend project to add to the others. Thanks again.
Mike