Question about 1997 GMC Sierra
GMC 6.5 litre diesel engine, blowing lots of black smoke and knocking once in a while, excess fuel usage, surge between 20-45 mph, runs good at 60-65 mph, what could be wrong
My 1995, 6.5 diesel turbo just shuts off when running
Posted on Dec 21, 2009
I have the same engine in my 97 it had the same issue and with my truck i hade a broken intake valve 3rd cylinder in on drivers side and my head on that side was cracked all the way accross it
Posted on Jul 26, 2010
Not sure how many miles you have on this truck but I do know that over time these fuel systems need to be checked out. Injectors should be tested and nozzles replaced and set up. Improper spray pattern and dripping nozzles cause timing issues and will cause your engine to run like **** and used more fuel. I would strart here. If this does not solve it I would then start looking at the fuel pump as the issue. These pumps over time will go out due to lack of lubrication from todays fuels. How does this truck run at idle?
Posted on Oct 28, 2009
Maybe injector pump under the intake
Posted on Oct 02, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jan 28, 2017 | Cars & Trucks
Sep 29, 2016 | Kia Sedona Cars & Trucks
Sep 15, 2014 | Cars & Trucks
May 10, 2014 | Cars & Trucks
Apr 19, 2014 | Chevrolet 3500 Cars & Trucks
Oct 14, 2012 | Chevrolet Cars & Trucks
Oct 22, 2010 | 2003 Chevrolet Silverado 2500HD
Jul 29, 2009 | 1987 Peugeot Liberte
Apr 11, 2009 | 1996 Volkswagen Golf
815 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: