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Pretty sure A1 trucks have the button for injection, although likely some interlocks?

With yours, since it's not a A1R, you have a switch correct? Not sure what it will allow/not. Mine is totally ECM controlled and I have no ether button on A1R. The NAPA cylinder I got is KAT 33118, the gaskets are KAT 33119 (these are cork and not awesome). The cylinder is not opened at all...

QS4-6SS, got the last one from dpequipment.com Yes works as it should, looks identical to the one I took off.

I don't have access to the A1R documents but it seems this QS4 version is the correct one for my truck. Dimensionally it's the same and the coil has the same resistance. I do have a single orifice to the intake. It bolted up the exact same also, currently fully installed. The replacement...

Sounds like I currently have that QS4 version then. The TMs I have don't have A1R info unfortunately. I would love to get a copy, currently all I have for A1R are the electrical diagrams, which have been extremely helpful.

Saw that. No luck contacting Quick Start either. Sure would be nice if they had a designation datasheet. I imagine some of the modifiers are for bottle thread side, materials use, solenoid spec (12V, 24V, continuous), port location, size, electrical connector, and thread types. The QS4-6SS...

Thanks!

Part number is QS5-5CTP, NSN 4810014428695. Not finding them in online searches but I know there must be a ton out there. Any leads?

If you are aware of solvent that can dissolve aluminum oxide and the galling/corrosion I'm all ears. Unfortunately the solution of this issue (using the special cap that is literally right next to the valve) was not used so water got inside of there and the whole thing completely seized up.

2007, no part number on the part, haven't looked in TM yet

Just put power to the connector at solenoid connector and got no click from solenoid(did see sparks indicating solenoid is good)

Well you can take it apart (I used a torch to weaken threadlock). Unfortunately it ripped the corroded AL threads off.

Solenoid/valve is seized. Before trying to source a new one I figure I'll try and rebuild. I was able to get the solenoid off the bottom but it appears the valving may come apart. Curious if anyone has any experience with these? I tried a pipe wrench and no joy there, but it may have a ton of...