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Thank you. LOL that's true. I have not thought that one through but it seem to me large current flows would damage things.

Way back when Mr. Stinson taught that white smoke is water, blue smoke is oil and black smoke is unburned fuel although that was for gasoline engines. I am still learning about diesels but as I understand it in a diesel white smoke is unburned fuel (not running) and black smoke is insufficient...

Eight functioning glow plugs are better than four. Also since the remaining four are seeing a higher voltage they will fail that much sooner. The stock cucv glow plug terminals are .187". The wellman 070 have the same .187 spade size. The AC 60G have a .250 spade size meaning they have to be...

Nice looking truck. The gray dash pad is a new one that has not been stained. I have one too. Beats the heck out of a burgundy one that is all cracked up. I see a spare too.

Others have stated it is to smooth out the idle and control emissions by making it easier for the cold engine to completely burn the fuel. Sounds reasonable to me.

The big resistor will only drop voltage when current flows through it. There is procedure to test it in the -20 TM. You may already know this but what the engineers did was create a series/parallel circuit using a big resistor (located on the firewall behind the air cleaner) in series with...

Follow the troubleshooting procedure, in my case the plugs were open and the meter did not move out of the green but you may have a short in something (meter to the red) that is causing the controller to short cycle. As others have pointed out clean and tighten all electrical connections...

If the needle is going deep down in the yellow then I would like to think most of the plugs are working. Did you test you glow plugs with an ohm meter? If the card is short cycling there may be an issue with the card or one of the sensors. Do you have copy of the -20 manual? There is a step...

Once started, depending on the engine temperature, the glow plug controller will cycle the glow plugs on and off.

If you can get a copy of the -20 TM it has a nice troubleshooting section that will walk you through the process step by step. Did you check for voltage on the pink wire on top of the IP? Can you hear the fuel shutoff soleniod engage and disengage when you remove the pink wire and replaced it...

White smoke tells me it is getting fuel. If the starter is going bad and will not spin the motor fast enough it will not start. A fully functioning glow plug system would help the starting process. I hear tell that once a diesel gets on the ether habit it will never get off. Sorry I cannot...

Are you saying it goes on for 2 seconds then off for 2 seconds then on for 2 seconds etc for a total of 30 to 40 seconds? Does the volt meter drop deep into the yellow then come back to green with the cycles or does it stay in the low green? When my swellman glow plugs burnt out my relay...

A resistor will not develop a voltage drop until there is current flowing through it, ohm's law E=IxR.

My M1009 came from the guard with one of those rubber insulated cable straps screwed to the back bumper for anchoring the rope to the bumper.

Congratulations on a sweet score.

Relays are not supposed to chatter.

Nice truck. Mine is up to 88K and is just getting broken in. LOL

Contact antennaclimber he has new ones for $<150.

I missed that.

The procedure to test the glow plug card for proper operation is in the -20 manual. So is the procedure for testing the entire glow plug system including the glow plugs. The CUCV wiki also has a quick glow plug check procedure. pages 2-62 and 2-63 15. GLOW PLUG MODULE INOPERATIVE NOTE The...