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This is looking promising. NEW injector on number 5. https://youtube.com/shorts/G1M8wHp84g0?si=vzFKa7tg_FS01QPr I’m going to buy 5 more.

Facts: 1. I am getting lots of flow all the way through all NEW parts all the way to the (NEW) hydraulic head. Its not a lot of pressure, but the flow will fill a pint bottle in seconds. 2. The hydraulic head is firing. I can remove the line and see a strong squirt at each injector inlet...

Done. No difference. I also removed, verified clean or replaced with new parts all the way from tank to IP. Zero base pressure. No pressure while cranking.

Done. 24 volts at the pump. Still 1 psi at pump.

Video of zero base fuel pressure. No presure while cranking. The rattling is just 6 months of tools sitting on the fender.

Zero base pressure at secondary where I should see 5 PSI. There is 1psi showing at tank. Zero psi at secondary when cranking. 1. NEW (NOS) pump and hanger 2. Cleaned hardline from tank to primary filter housing today (again) 3. Removed and checked, cleaned primary filter housing today...

Ok - maybe undo the rubber line that connects the hard line under the radiator to the booster? Without pressure / flow ? Just hope it sucks it up?

The old gasket was reusable and the old pump was probably OK after tank cleaning. The fuse was OK. HOWEVER, I have replaced the whole assembly - hanger and pump are NOS unit. I also used a NEW gasket and new stainless screws. The new unit has its own fuse so I have't checked it. Its...

Maybe - but not sure of a good place to introduce a fuel canister.

Fail. Parts Cannon Fail. Everything Still Fail. I want to start another thread because this one is embarassing in the amount of fail. Truck started fine before sitting up and I removed tank to clean and change the filters. After that, truck would (hard) start with starting fluid only...

Yeah - I get it. Its just that I am supposed to see ~5 PSI at the tank? I see 2PSI- ish. I am getting good flow back from the HH into the tank but low pressure. I am supposed to see ~5 PSI at the secondary filter? It doesn't even register on the gauge. If I open the bleed on the canister...

I have decided to load the parts cannon again. Im throwing another NOS injection pump at it. its stupid expensive but this has gone on too long. I just clicked Buy It Now. Should have it in a week or so. sigh

No, the seat wouldn't come out. I have a spare parts HH and tried to remove the seat with a screwdirver and it wouldn't come out of that one either. There are slots in it so it can spin - but it wouldn't come out. It looked prettty clean in there when I put my boroscope in to peek...

Very possibly this. The crap in the tank was the worst Ive ever seen. However, the tank has been cleaned pretty well and the pump is now a NOS unit. If the lines are blocked with crud, wouldn't I see HIGHER pressure at the tank? I'm only seeing ~2-3 PSI

No improvement. *sometimes * the truck will hard start immeiately after killing it. Still needs starting fluid to start. I am wondering why I see such low pressure at the lift pump (~2-3 PSI) and at the secondary filters (0 - .5 PSI) with the engine off and pump running.

I now see @Floridianson comment on how to remove the seat with screwdriver. I will see if I can get it out.

Mayyybe there is some crud in there after all. I am now seeing ~3PSI (up from 2) at the tank but still basically zero at the secondary filter. I can now inmmediately restart the truck with no starting fluid. Its a hard start and probably wont start when cold - BUT it restarted.

I replaced the seal on the center bolt and the seal in the canister. I can check again. I’ve pulled it twice. Three times a party!

Pulled the 12 point Doo-dad at the HH. no real crud in there.

Is there a diagram ow what is under the 12 point bolt? Spring shot out which I was ready for - but not sure if anything else escaped..