GMTD scan tech

[Goose57]

Thanks guys, can you tell if they are self regulating GP,s without pulling them? When they turn on they run about 6to7 seconds then if I turn them on right away they only run for a second. Are they still in danger of swelling because their no marking son them? The motor starts cold w/one GP cycle. I am not opposed to pulling them if they might swell. Thanks.

 

[Will L.]

Buy the AC Delco 60G plugs. Attached is a picture as to why you don’t want anything else in there. Quadstar, Leroy Diesel, Twisted Steel Performance (TSP doesn’t sell glows afaik) are all trusted suppliers. If you buy AC Delco anywhere else it NEEDS to be a brick and mortar AUTHORIZED DISTRIBUTOR! Call them to verify what source are legit. The piston out of my optimizer with less than 70,000 miles on it is the one on the tire. Some are pics of similar events. The head with the broken off plug is mine. Nicely destroyed precup. I still never pulled valves but 50-50 chance one is destroyed. I got LUCKY! Zero block damage. The pic with piston in engine is someone elses- I am pointing out where the cylinder wall is scratched and will blow by so now oversized piston is a requirement for his engine.
I’m warning you as strongly as possible: DO NOT EVEN START THE ENGINE AGAIN UNTIL THE 60G PLUGS ARE IN!

 

[Will L.]

About the 9G plugs:
Yes decades ago that was the part number and it was not self regulating. Quite the opposite it was a plug that had issues burning itself away. And when water was mixed in the fuel (less common when we had real diesel) GM was convinced that caused the damage. And by taking that legal stance they pushed blame on the owners and saved millions in replacing engines.

If you buy a 9g glow plug now- that number is reused and is for a dmax.

If you find original 9g plugs for the 6.2- my suggestion is to fill the glow hole with beach sand first- then install. About one measured cup per cylinder should do it.
Oh, and remove your drain plug and drop it in the intake manifold. Then install the 9gs and start the engine.
This will get you to your inevitable end much less painful.

 

[Goose57]

Looks like I’ll have a little time before I go to the 60g GP. I e-mailed QS about the reman IP not running good on my truck and e-mailed a video of the truck w/ the original pump on. Also he said the scanner data I sent him previously had good pump timing numbers on it and didn’t indicate to him a bad pump. He did ask for the name tag data on the pump. I sent the tag data and a video w/the truck running after a cold startup w/ the original pump on. The only thing I can think of I did different while installing my original pump is I left the drivers side Inj. lines at the Inj. loose and started it up. It started right up but remember I had the ECT fooler on there. I hope that didn’t make a difference. I did have a clear return line w/the new pump on running badly.

Here's the video I sent them today w/ the truck starting up cold w/ my original pump on.

 

[jrsavoie]

Looks like I’ll have a little time before I go to the 60g GP. I e-mailed QS about the reman IP not running good on my truck and e-mailed a video of the truck w/ the original pump on. Also he said the scanner data I sent him previously had good pump timing numbers on it and didn’t indicate to him a bad pump. He did ask for the name tag data on the pump. I sent the tag data and a video w/the truck running after a cold startup w/ the original pump on. The only thing I can think of I did different while installing my original pump is I left the drivers side Inj. lines at the Inj. loose and started it up. It started right up but remember I had the ECT fooler on there. I hope that didn’t make a difference. I did have a clear return line w/the new pump on running badly.

Here's the video I sent them today w/ the truck starting up cold w/ my original pump on.

I wouldn't delay on the glow plugs.
You've seen the pictures displaying what crap glow plugs can do