• Welcome to The Truck Stop! We see you haven't REGISTERED yet.

    Your truck knowledge is missing!
    • Registration is FREE , all we need is your birthday and email. (We don't share ANY data with ANYONE)
    • We have tons of knowledge here for your diesel truck!
    • Post your own topics and reply to existing threads to help others out!
    • NO ADS! The site is fully functional and ad free!
    CLICK HERE TO REGISTER!

    Problems registering? Click here to contact us!

    Already registered, but need a PASSWORD RESET? CLICK HERE TO RESET YOUR PASSWORD!

88gmctruck's 1999 K2500 L65 cranks but doesn't start.

:lol: you know it. It's something obviously simple, main problems are it's stuck in town, and parts aren't that readily available around here locally. I also don't have much time this week as I have 3 tests.
 
Long chain/rope, keep tension (all the time)......the 6.5 does the braking and you push the GO pedal,.......and you both stay on the (Speaker) phone.
 
Hells yeah, we flat towed a CUCV with my 83 a lot further than this. Only issue is the cell phones are dead for like 6 of the 8 miles.
 
oh trust me, Devin and I know this dance well. Remember we flat towed with a strap the CUCV with his 83 back over 25 miles. I just don't wanna deal with having to tow it home.
 
Oh yeah, and the CUCV is now more reliable than my 99. It has started every time since the electrical system and starter have been fixed, and is now driveable. It just needs plates...
 
Surprisingly this is the first vehicle that has actually left me stranded. The 88 has always worked, or worked enough to get home with. Nothing has went wrong with the 02 cause it has 28k on it.
 
Here's a thought I was having, need some input. I read where the fuel line from the FM -> IP likes to dry and crack, when David opened the fuel cap there was a lot of vacuum, is it possible that the IP sucked air in from this potentially cracked fuel line and there is air at some of the injectors preventing it from starting? There is no air at the bleed screw, I done soaked my hand with fuel opening that SOB.
 
Brooklyn Tow said:
This ain't your first rodeo guys.......EH? ;)
Click to expand...

One hasn't lived until they have towed a 196# 13-letter-shit-spreader Loadstar 1800 with a 1989 Cheyenne K2500-LD 4.3-V6 5-speed. Oh yeah, it was night and the Loadstar was full of wheat. I had the pleasure of that one on the farm. :D :D :D
 
83GMCK2500 said:
Here's a thought I was having, need some input. I read where the fuel line from the FM -> IP likes to dry and crack, when David opened the fuel cap there was a lot of vacuum, is it possible that the IP sucked air in from this potentially cracked fuel line and there is air at some of the injectors preventing it from starting? There is no air at the bleed screw, I done soaked my hand with fuel opening that SOB.
Click to expand...

You know anything is possible.....but the smart money is on the PMD......I've seen a 6.5 running on 7 cylinders and a dead LP, with a broken crank and a cracked flywheel!

83GMCK2500 said:
One hasn't lived until they have towed a 196# 13-letter-shit-spreader Loadstar 1800 with a 1989 Cheyenne K2500-LD 4.3-V6 5-speed. Oh yeah, it was night and the Loadstar was full of wheat. I had the pleasure of that one on the farm. :D :D :D
Click to expand...

Sounds like you got it covered......and then some!
 
83GMCK2500 said:
One hasn't lived until they have towed a 196# 13-letter-shit-spreader Loadstar 1800 with a 1989 Cheyenne K2500-LD 4.3-V6 5-speed. Oh yeah, it was night and the Loadstar was full of wheat. I had the pleasure of that one on the farm. :D :D :D
Click to expand...

small but mighty arent they? :D we flat towed a p-chassis handicapped equipped shuttle bus home (about 60 miles), and dad found overdrive on the flat with my v-6! :cool:

the whole reason we had to tow it was because I didnt bother to make sure the driveline was hooked up when I bought it, and the straps, bolts, caps and needle bearings were mia, and it was sunday, so we had to pull it, or waste gas. wasted anything doesnt roll to well with him!
 
Well, Devin and I ran back to town. I TRIED plugging in the original PMD but I was unable to re-route the harness back under the intake. We will be towing it back tomorrow.

Few more things I checked out.
1: PMD was installed with 2 screws, without thermal paste. It has a pink silicone pad
2: PMD wasn't really tight either.
3: PMD is just an unlabeled black box, not stanadyne.
4: Tried cranking with PMD unplugged, it didn't do it's occasional sputter cough like it was doing plugged in.
5: Fuel Shutoff Solenoid plunger moves freely, have yet to bench test it. There was fuel in the IP where it was
6: Glowplugs are cycling as normal.
7: Liftpump is working, and can get fuel from the filter bleed or water bleed on the front of the motor.
8: We believe the Oil Pressure Sensor to be working as longer cranking shows pressure on the gauge (up to 35PSI)
9: Fuel cap is a Diesel specific cap.

I'm going to order a new PMD whether I need it or not. I had planned to have one as a spare in the truck anyway, as they are integral to the truck's operation.

And to think, I wanted a 92-93 6.5L for the mechanical pump.....
 
Last edited:
Sounds like the PO did a quickey PMD swap after getting tired of buying them and frying them.......and the underhood location ain't helpin much.



2 Cents
 
I'd help if I could. Have to run to Pullman this morning to the kid's doctor to get some papers. I'm guessing you're either sleeping or heading to class though as I type this. :D
 
Heading to class soon, will be done at 10.

Anyway, I went ahead and got a tested used PMD for the time being. I need to decide on a different cooler and what PMD to buy.

Anyone have recommendations, particularly on the PMD?
 
These trucks do not like to start on an incline down. something about how fuel sits in the FFM or whatever. If its on a steep incline and you can roll it to level and prime it again it might start. Also, on the PMD, tightening the nuts is the transistor nuts inside. So you can pull it off, pop off the transistor covers and tighten down the 1/4" hex nuts, not torqued down, but like tight and then a half turn. Then tighten it down to the heatsink better, reusing the heat pad temporarily or thermal grease.

Once level it could take a couple cranks even after priming because of same air in there. You can also unplug the OS and see if that helps.
 
The truck is on a very very slight incline down, but once its level I'll bleed the system again. I'll also check the resistors on the pmd.

Devin and I decided we would at least crack a line at an injector, see if there is fuel getting there. We are betting no, since it seems the pmd has failed. Aside from that, it would be fuel shutoff solenoid or ip, which seem less likely and not at all likely respectively.
 
If it stumbles or smokes youre getting drops of fuel at least, when you unplug the PMD you get nothing and it should crank smooth like you said. Even my drive way at like 20 degrees was enough to give mine some heartburn when I back it in. I now just know to coast down to the street and then start it. Never a problem parking up the incline though, unless youre below 1/4 tank on the fuel, which cranking with no fuel can hurt the IP.
 
You must log in or register to reply here.
Back
Top