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Had the wifey come out and hold the throttle at about 2200 RPMs. Right at the stage where it starts cutting out and blowing a lot of smoke. Intake manifold not yet on. Turbo bolted up so the main of the exhaust goes out the pipe. Pressure side of turbo to atmosphere. There is no air intrusion...

Hello Grayman, and welcome to thetruckstop. Always nice when a new comer steps on in. I do want a Humvee, mainly a military unit. Just too deep in debt on this truck to want to step off and put in a bid for one of those military units, and, Denver area is not so far away that I would be willing...

None at all at idle. I never thought to engage the PTO option and check at higher revs. I’ll do that after it cools some this evening. Currently at 98*F out there which is not terrible but just taking a bit of a rest.

Also, one other question, is it okay to reuse the intake manifold gaskets ? I been getting the blue gaskets from NAPA, they always appear to be okay after removing the intake manifold. Seems I been removing and reinstalling IPs so frequently its been costing quite a bit for intake gaskets, about...

Have the used IP I just purchased from off the Hummer forum. Truck runs and no leeeeks. I have the heat shield and turbo bolted in position. Coolant is filled. No intake manifold as of yet. Was making sure this was going to fire and run first. Warmed the engine to about 175*. Installed the...

One thing to not do. After You get Your coolant system pressure pump, absolutely do not star or run the enjun with pressure in the system. It might not blow like a bomb but ittsa gonna blow out something when the coolant begins to warm and build pressure of its own.

Sort of holding off to see what John wants me to try next to diagnose this problem. I hope it doesnt involve reinstalling the pump. His article on diagnostics kind of leads to a bad optic sensor. IDK if I have the abilities to replace one of those. I have read the instructions about that and it...

That’d make a heck if a fine battery charger for an off the grid electrical system, if it was hooked to a windmill.

Yeah, me too. Even though the inner fender has to be reinstalled to keep the air filter in position.

I wonder how safe it would be to install an IP and fuel lines, install right side manifold heat shield and turbo them take the truck for a drive before installing the lower and upper intake, inner fender and air filter. Hope for no road debris to kick up ? ? ? ? 🫣🤷😹😹

Yup. Got a reply back from John at QS. In His reply He included this link. https://quadstar-tuning.frontkb.com/en/articles/682880 It doesnt really match what My truck was doing. Even with the SES lamp ignited acceleration was still good. Then after getting to the rest area and clearing the code...

If this used IP is as good as it should be I should not have to mess with an injection pump for a good many years.

I’m getting good at yanking these IPs. I didnt time it but I’m guessing about two hours and that included hauling the tools from the garage out to the boulevard and street side. Yank that inner fender and turbo, pipes and manifold and that pump is setting on the bench, trying to get it ready to...

Yup. Brand new not remanned IP. From where I first checked the code and sent out the distress call to the forum, the truck went to the rest area about five more miles down the road. Pulled into the RA and rechecked and cleared the code. Started the engine, fired right up, tripped the SES lamp...

What I did with My GMT400 today, destroyed another injection pump or some such. Whatever this means ? ? ? ?

Turbo on my truck runs at less than 5 PSI at highway speeds unless going upgrade. If You are getting 10 PSI when not in OD then check the fuel mileage in OD and out of OD. You might be better to run it in 3rd, or non OD just for the savings in fuel. It would be nice to finally get an injection...

Get You a radiator/coolant system pressure pump. Pump the system to the DATA spec PSI then look for the leeeeks. Mine 2000 K3500 was loosing coolant and I could not find the source of the leeeeks. Pumped it up and it was both the heater hose connections at the firewall. Tightened those, then...

My question has been answered. Got ready to leave the rest area and the fugging engine dies. Guess another AAA rescue.

On my way to Sheridan Wyoming and then back to the cabin and the lake. Made it about 25 miles and this DTC pops up. I emailed QS Tuning a few minutes ago so waiting for a reply from them. Cleared the code and it pops right back up. Engine falters when it does but then picks up and runs like...

That blitch dont scare me none. 🫣🫣🫣😹