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6.5L Turbo Diesel 1992-00 6.5TD - Discussion forum for the 6.5L engine.

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Old 12-01-2017, 12:33 AM
Tim. Tim. is offline
Join Date: Nov 2017
Location: Ny
Posts: 1
Default Chevy 2500 6.5

Hello sorry probably you guys answered this probable cause but i just recently bought a chevy 2500 96, and i have this wierd problem with and misfire sound like its only in one cylinder driver side but it doesnt misfire all the times it will sometime do it when it idle and the constantly misfire constantly when i reach last gear 2000 rpm but when i pass 2000/2150 rpm itll be all good, any suggestions
Thanks... Tim
Plus at this moment my wastegate isnt functioning cause of the vaccum pump could that cause the problem or not ?
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Old 12-01-2017, 07:05 AM
Robyn's Avatar
Robyn Robyn is online now
Missy Good Wench ( Moderator)
Join Date: Apr 2001
Location: Newberg Oregon
Posts: 9,576


Welcome to TDP

The misfire is likely a failed injector.

Any SES LAMP Showing ???

If so get the codes

With the engine running (And missing) crack open each injector line (one at a time) and see which one does not cause a change... Sort of like pulling a spark plug wire on a gas engine to isolate a misfire...

Once you locate the cylinder not fireing... Remove the injector and switch it to the cylinder next to it (just swap the two) Restart the engine and see if the issue follows the injector.

If the issue follows the injector then the one injector is bad for sure.

If the issue does not follow the injector then there are other issues such as the injector pump ??????

The vacuum pump will not cause the issue, but you need to get it fixed to have the engine operate properly (Turbo boost and power)

Good luck...Keep us in the loop
(1) 95 Suburban 2500 4x4
(1) 2017 Mercedes C class
(1) 1997 Astro "CATVAN II"
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Old 12-01-2017, 05:09 PM
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JohnC JohnC is offline
Enemy of the State
Join Date: Jan 2001
Location: New Hampshire - Live Free or Die
Posts: 5,163
Default Zombie apocalypse

Wow! This thread is more than 11 years old...
"Need" - Wanting to get someone else's money.
"Greed" (formerly meant what "need" means today) - wanting to keep your own.
"Compassion" - a politician's willingness to arrange the transfer.
-Joseph Sobran

Current oil burners: MB 350SDL, Kubota 7510
Gone but not forgotten: '87 F350 7.3, '91 C2500 6.5, '95 K2500 6.5, '06 K2500HD 6.6
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