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Old 02-14-2013, 06:39 PM   #1 (permalink)
snowygreengmc
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Join Date: Feb 2013
Location: woodland park co
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need help truck wont start and black smoke from tail pipe

I just bought a 1995 GMC k2500 with the 6.5 L in it and when I try to start it tries to start but no go and black smoke comes from the tail pipe don't no what to do to try and solve or fix thanks for the help
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Old 02-15-2013, 03:06 AM   #2 (permalink)
VanBoy
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Pacific Iron Mountain Truck Club Member

Welcome.

So, this truck, did you buy it running or not running?

Do you know if your glow plugs are working? How long does your glow plug/wait to start light stay on during cycling?

A trick I head of w/ Ford IDI diesels, not sure if it would with the 6.5L, is to plug the block heater in over night or during the day while at work (all day). On my Ford IDI, it can warm the engine enough that it can start even if the glow plugs or controller are not working. If your 6.5 starts after being plugged in warming, it would mean something in your GP system is not right.

Make sure your batteries are 100%. Also, if you jump your 6.5L, use the vehicle to CHARGE your batteries. Don't try starting w/ the jumping vehicle hooked....more then 12V to the glow plugs will damage them. Yes, that means a jumper vehicle w/ 13.9-14.1V coming from the alternator will hurt them. Some 6.5's had stickers in the engine compartment saying not to jump.
__________________
1999 Ford E-350 7.3L Power Stroke Club Wagon, 3.55
1990 Ford E-350 7.3L IDI Club Wagon, 3.54LS x2
1994 Chevrolet C2500 6.5L TD, 3.42
1981 VW Rabbit Pickup 1.6L N/A x2
1978 VW Rabbit 1.5L N/A
1977 KW K100 NTC-350, twin screw semi
1977 IH Transtar II NTC-290 single axle semi / IH Transtar II NTC-290 twin screw semi
================================================== ==
Stanadyne PMD installed 6/13 replaced- reinstalled D-Tech ,Soot Trap Delete Jan 18, 2014 / Heath TurboMaster Dec 22, 2013 / New OPS (BWD), OPS Relay mod,
black Stanadyne PMD w/ #5-June 2013 / Dorman relocation kit, D-Tech PMD to bumper, #9 resistor- Jan 2013 / Carter Lift Pump, P74143 10-15psi, 32gph- Dec 2012 / Brought home Dec 17, 2012

Other then that, the Chevy is STOCK.
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Old 02-15-2013, 03:42 PM   #3 (permalink)
JMJNet
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The Suburban Club Member

Welcome!!!

If you are not sure what to do, in the STICKY top of this forum section, there is something called DIAGNOSTIC CHECKLIST.

If you DO and report us your finding, that would be a good first step.

Pay particular attention to the Lift Pump test by clicking the link.
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1995 GMC Suburban:
PMD in Bumper
4" Warpspeed Exhaust
KD LP/OPS Harness
Bosch Duraterm GP
Heath Turbo-Master
Chevron's XLP Diesel Additive

Last edited by JMJNet; 02-15-2013 at 03:42 PM.
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