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Yep that was my fault when we removed the head I should have just taken your head with me home and pulled it completely apart and good cleaning. Since then we have become GOOD friends and I regret not taking charge of the head and it being less work for both of us but we got it running.The delivery valve is what kicked my butt on the last non runner Deuce I bought. Went thru everything, but it still wouldn't start. Removed the delivery valve, spring & cleaned the seat & off she went.
I can confirm the IP is spinning when checking it’s timing.Have you confirmed that the plunger is actually moving / that the entire pump is actually spinning? Weve been through most of the normal and less normal stuff it seems, perhaps the pump cam is worn out, or the pump seized and broke its shaft? The plunger can be accessed through the center cap, you can put a wooden dowel or brass drift through the hole to see if things are moving up and down. I dont have it on hand, but im sure there is a travel spec that could be checked with a dial indicator, especially if the travel seems minimal. I too have not checked the pressure of the booster pump when cranking, but I think it should well have increased when you fired it on the starting fluid. Since the booster pump is run off the main IP, a broken drive would explain that lack of buildup. Old school Stanadynes, in particular, had failure points machined into the pump drive shaft so it would snap if the pump seized and protect the engine gear train. Im not sure if this pump has such a 'safety' but the symptoms are the same either way.
I did not specifically clean the lines when they were removed.Have you taken the injector lines off and cleaned them to make sure they aren’t clogged up?
It’s definitely possible. I think I have decent flow ONLY because I’m getting flow back to the tank via the return. I at least know I have fuel everywhere I should,it’s just not leaving like it should…if this makes sense.I am new to trouble shooting the Deuce, but could one of the rubber / plastic fuel supply hoses be collapsed internally causing a restriction?
I appreciate that. I got frustrated this morning and had to walk away. I blew leaves all afternoon and let it sit for a bit. But I’ve at least been brainstorming which I think is more exhausting hahaI cannot even imagine how frustrating this is for you, but my hat is off to you fir documenting your journey so well. This thread is going to help many others. Because, at the end, your truck WILL start.....
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