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ISX

Bleeding the Fuel System

6 posts in this topic

Heres a perk of owning a 12V :tongue: Finally have 1 up on you 24vers haha. When you guys bleed your lines, it takes forever. You have to crack the lines and everything and it still takes a while. I do not run an AFC, I have full fuel if I floor it at idle until the governor kicks me back out at 3000. Well that means I can bleed the injection lines at full fuel if I step on the pedal.. A stock 12V would be in the same boat as a 24V since the AFC keeps it from going to full fuel.I had been telling Mike about this but I finally got it on tape today. The full one is 8 min long if anyone wants to see me take the lines off, blow them out, then put them back on, that way you guys don't think I cheated lol. Otherwise, here is the short short version. Basically I took the lines off, blew them out with an air hose, put them back on and tightened them all down, no bleeding, no nothing. Then got in the truck and floored it and the video shows the aftermath.

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after i change my fuel filter...and cycle the key a few times..cause i have a fass hpfp..i dont crack anything..and mine fires in the same amount of time:thumbup2:

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That's different. The injection lines and everything still have fuel in them. If I change my fuel filter and reprime it (same as you are doing with the FASS thing) mine doesn't even notice it had the filter changed.

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The common rails are "self-purging"!!!!:tease::tease::smart: No bleeding required.

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So if you run it out of fuel, you just sit there and crank it after you put more in it?

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So if you run it out of fuel, you just sit there and crank it after you put more in it?

Pretty much. I've never ran out of fuel before though. When I change out fuel filters, I turn the key to "ON" and let the LP cycle to fill the filter canisters. I do this twice. Then I try to start her up. Sometimes it takes a bit to fire though. When I changed out the CP3, it was the same thing. In that case the rail was empty and the CP3 had to pressurize it. I'm guessing the "air" in the rail got sent back in the return line to the tank. However, I did the same procedure to start her up as above!!!:smart:

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