mitch504
Senior Member
I know you guys are tired of me clogging up HEF with pickup truck questions, but...
That same early '99 GMC 2500 with a 6.5 and automatic that I posted about before, since curing the PMD problem the truck has been great for about 6 weeks, then after about a 20 mile hwy run I shut it off for about 15 minutes. When I went to start it, it just spun like there was no power to the injector pump. I plugged in my tested good spare PMD, no change. I opened the bleed screw on top of the filter and got a fountain of fuel with no air, spun it again no change. I checked every fuse inside and out, changed a lighter socket fuse, no change. let it sit a few minutes, spun it for about a minute, it started and ran great. Next 20 times, it started instantly, cold or hot. Then, it spun for a long time, started and ran great. It has done this about once every 2 days since.
I have a GM service manual for this truck on the way, but I thought I'd see if any of y'all had seen this problem, or could give me any idea where to start looking.
Are these engines glow plug sensitive even when hot? maybe my glow plugs aren't energizing?
It's getting to the point if I have to go somewhere I don't want to be stranded, I take my old truck.
Thanks guys,
Mitch
That same early '99 GMC 2500 with a 6.5 and automatic that I posted about before, since curing the PMD problem the truck has been great for about 6 weeks, then after about a 20 mile hwy run I shut it off for about 15 minutes. When I went to start it, it just spun like there was no power to the injector pump. I plugged in my tested good spare PMD, no change. I opened the bleed screw on top of the filter and got a fountain of fuel with no air, spun it again no change. I checked every fuse inside and out, changed a lighter socket fuse, no change. let it sit a few minutes, spun it for about a minute, it started and ran great. Next 20 times, it started instantly, cold or hot. Then, it spun for a long time, started and ran great. It has done this about once every 2 days since.
I have a GM service manual for this truck on the way, but I thought I'd see if any of y'all had seen this problem, or could give me any idea where to start looking.
Are these engines glow plug sensitive even when hot? maybe my glow plugs aren't energizing?
It's getting to the point if I have to go somewhere I don't want to be stranded, I take my old truck.
Thanks guys,
Mitch