1987 M1028 6.2 crank no start

Hi everyone I am at a stand still I have currently been restoring my m1028 and I have had it down to the frame I had the motor, cab,bed,radiator mount off and have everything back on except the bed and I have pretty much everything hooked back up and I cannot get it started cranks but am not getting fuel out of the injector pump I am getting it up to the injector pump so I know my mechanical pump is working but I don’t know if it’s air bound in the injector pump but I saw a video where u take the top cover off of the injector pump and all the mechanicals inside mover freely so any help would be greatly appreciated

With the ignition on, lift and reconnect the pink wire to listen for operation of the shutdown solenoid. If the solenoid is clicking then I would keep on priming. If you start seeing white smoke out the exhaust then you're getting fuel and it's time to go after glow plugs.

87cr250r said:

With the ignition on, lift and reconnect the pink wire to listen for operation of the shutdown solenoid. If the solenoid is clicking then I would keep on priming. If you start seeing white smoke out the exhaust then you're getting fuel and it's time to go after glow plugs.

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Hey man I ended up lifting the pink wire off and on while I had the ignition on and I am not hearing anything but I am hearing it out of one of the green wires I will send you a picture and circle the one where I’m hearing a clicking from the Solenoid

I would pull the glow plugs and crank it over quickly. If it is getting fuel the glow plug holes will get wet. And besides this is the perfect time to check the glow plugs and bench test them. I started many diesels and primed them after putting an engine in with no glow plugs. It cranks much easier.

The green wire on the left is an advance of the timing and the green wire on the right is the fast idle control. Both are activated by the switch on the right rear passengers side head. It is am2 prong plug and a brass 7/8" switch that threads into the head and senses water temperature. Good Luck Report back.

cucvrus said:

I would pull the glow plugs and crank it over quickly. If it is getting fuel the glow plug holes will get wet. And besides this is the perfect time to check the glow plugs and bench test them. I started many diesels and primed them after putting an engine in with now glow plugs. It cranks much easier.

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OK thank you very much I will have to give this a shot to what would you recommend for glow plugs

AC Delco 60G has been good for me. Don't ever use Autolites, they're the ones that swell up when they fail.

You can check glow plug condition with your dash voltmeter. With the key in the accessory position the gauge should be solidly in the yellow. Rotate the key to run, if the glow plugs are working it will drop to the red during the cycle and then return back to yellow when the cycle ends. As glow plugs fail it will drop less as there is less draw on the system.

May I add that I have used the A C Delco 13G glow plugs just like it left the factory with in all my CUCV's for the past 27+ years. With the 13 G there is no need to cut the 3/16"spades and change them to 1/4" spades. With the stock glow plug system unhacked it has served me well. Another quick check is to see if the current is getting to the glow plug side thru the glow plug relay. I just changed one on a snowplow truck M1009 that made the clunk and was slagged at the contacts and not allowing the current to pass thru the relay to the glow plugs. Test light is all you need. Turn the switch and probe the glow plug side of the relay while the wait light is on. No light from the glow plug side and you have a bad relay. I have been using snowplow relays for replacements and they are inexpensive and hold up well. Snowplow relays get a lot of use and tolerate abuse well. Good Luck. Report back.

cucvrus said:

I would pull the glow plugs and crank it over quickly. If it is getting fuel the glow plug holes will get wet. And besides this is the perfect time to check the glow plugs and bench test them. I started many diesels and primed them after putting an engine in with no glow plugs. It cranks much easier.

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yes,you told me that and it helped me a lot to start my m1009 after 10 years stop

What I noticed is that the original GP connectors become tired and don't connect well to the glow plug.

That's what happens when someone replaces the Packard 56 series (currently Aptiv) terminals with standard spade terminals. The spades don't tolerate very many plugging and unplugging cycles.

The CUCV's came from new with 3/16" spade terminals. And if I encounter a loose ill-fitting spade connection I just twist and tweak the male connection on the glow plug and that corrects the issue. I still have the 36-year-old stock terminals on my 1987 M1028. And imagine that. I have the A C Delco 13G glow plugs and have not changed them in 10 years. Takes a lickin and keeps on tickin. Happy Holidays.

cucvrus said:

The CUCV's came from new with 3/16" spade terminals. And if I encounter a loose ill-fitting spade connection I just twist and tweak the male connection on the glow plug and that corrects the issue. I still have the 36-year-old stock terminals on my 1987 M1028. And imagine that. I have the A C Delco 13G glow plugs and have not changed them in 10 years. Takes a lickin and keeps on tickin. Happy Holidays.

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I have the same on mine and haven't changed mine since i can remember.

cucvrus said:

The green wire on the left is an advance of the timing and the green wire on the right is the fast idle control. Both are activated by the switch on the right rear passengers side head. It is am2 prong plug and a brass 7/8" switch that threads into the head and senses water temperature. Good Luck Report back.

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Hey man so I have figured out that my fuel shut off solenoid works but the pink wire I am not getting any power to I have by passed it to get it to start and it is working properly I. Am currently stumped on why that wire is not getting any power any suggestions thank you

Hey Man, Back trace the wire. I heard someone say that wire has a fuse. I don't know which fuse, but it is good to hear that you have the truck running again. Good Luck and Hapy Holidays.

cucvrus said:

Hey Man, Back trace the wire. I heard someone say that wire has a fuse. I don't know which fuse, but it is good to hear that you have the truck running again. Good Luck and Hapy Holidays.

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Ended up finding it when I put the cab back on and went to plug the main plug into the cab. I must’ve didn’t line it up correctly and I pressed the tab back into the cab with the pink wire ended up, pulling it out and shoving it back in and getting 12 V glad she’s running again thank you so much for everything