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Need Help Diagnosing Fuel Delivery Issue

huskerfan

Member
30
4
8
Location
Lincoln, NE
Good news is a buddy of mine said i can come pull the IP off the 6.2 engine sitting on his shop floor. Was hoping to snag a 6.5 IP off the internet since i had read those give you a little more power, correct?
 

Barrman

Well-known member
5,400
2,074
113
Location
Giddings, Texas
The fast idle and cold start advance both have a green wire connecting to them. The pink wire as pointed out above is what turns the fuel on or off.

My post in #24 is just following normal fuel filter bleeding procedures. If the engine is cranked with the pink wire connected and powered while the fuel supply to the injection pump is open. Air will get into the injection pump and you will be starting over again trying to get the IP full of fuel again to even diagnose your issues.
 

huskerfan

Member
30
4
8
Location
Lincoln, NE
The fast idle and cold start advance both have a green wire connecting to them. The pink wire as pointed out above is what turns the fuel on or off.

My post in #24 is just following normal fuel filter bleeding procedures. If the engine is cranked with the pink wire connected and powered while the fuel supply to the injection pump is open. Air will get into the injection pump and you will be starting over again trying to get the IP full of fuel again to even diagnose your issues.
Well now I am more confused. I disconnected the pink wire, still nothing. Pulled the inlet line to the fuel filter, cranked and couldn’t get fuel to it. Hooked a shop vac up to the inlet line to the filter and got a little bit of fuel to come out, but nothing crazy. So then I pulled the outlet line on the fuel pump and cranked it and nothing came out. Does that lead us to believe it’s a clogged fuel sock in the fuel tank?
 
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