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PToombs wrote:Remove the wire from the FSS, turn the key on and touch the wire to the stud. See if you can hear or feel the solenoid click. Plan B is to remove the plunger and see if it will start. If it does the solenoid is bad. You can shut it off with the lever on the side of the pump.
It could also be leaking air back into one of the lines since you disturbed them. Make sure all the seal washers are on the banjo bolts and look for wet spots on the suction and return lines.
PToombs wrote:Yup, darn spade connectors! Lotsa guys replace them with an eye so they can't loosen up.
Are you sure it's the return leaking? The seal is a simple thing, if you draw 2 circles and connect them with a line, that's what the seal looks like, only bent double. Try loosening the bolt and retighten it, but don't go crazy with it, they don't have to be super tight. I've had them leak after the injectors have been out. Sometimes the return line doesn't mate well to the injector and I have to loosen the injector and turn it a little, then hold it as I tighten the nut to keep it aligned better.
PToombs wrote:A leak around the nut is no biggie, just give it a little snug with a wrench if you can get on it. Or loosen and tighten.
What year is the truck? are you sure you have the wires right on the FSS?
rustybottoms88 wrote:. Maybe I got the KSB and the FSS wires swapped?
PToombs wrote:rustybottoms88 wrote:. Maybe I got the KSB and the FSS wires swapped?
This is what I was thinking, especially with an early truck, the KSB works backwards on them, so no power when cold.
I'm not sure on wire colors, I have a 92 truck and a 93 service manual so they don't help. I know on mine the hot wire feeds the FSS, then the KSB feed goes from there to the sensor, then to the KSB.
Maybe pull all the wires, turn the key on and check them with a test light? Hot one for the win!
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