charger 69

Its been a while since I have been on here,
I got a short distance from home and the truck gave a very hard shake and shut off with no warning so I got it off of the road and towed home. NOW it cranks over like always but doesn't start. I cracked the return lines and cranked it over and no fuel coming out. So what is the next thing to check after the fuel filter ?
Didn't there used to be a "how to do it " section on the site or did I miss it ? Thanks, Al

oliver foster

First thing I would check is the wire that runs to the fuel shut off solenoid.
Then I would try a direct line from the positive battery cable to to see if it starts.

How hard a shake are we talking anyway?

charger 69

Ah thanks, I am going to change the fuel filter anyway and will check the solenoid. The shake was like blowing a tire BUT it only lasted for a couple seconds.

oliver foster

Did you get death wobble in the front end, which loosened your FSS wire??

charger 69

Anything is possible. There 3 wires to the back of the pump.There is a 12 ga. deep blue wire that goes on a "fitting" just over the lines from the pump., which was tight. There is a light blue wire maybe a 14 ga. to the same fitting which was loose and a white wire going to the bottom of the pump that a small line threads into and that doesn't seem to have power to it and it was loose so I crimped the wire connections and after bleeding off the lines it started. SO I am guessing the bottom piece that the line is threaded into is the FSS ?

oliver foster

The lower unit with the small line that threads into it is the KSB.
The upper one is the FSS the two lines that run to it.
I am guessing you touching the lines made them get better contact and work again.

Google a picture of "1st gen Dodge 12V FSS" to make sure you know what need the line to be tight on.
Some people even bolt a ring connector to it rather than the spade connector that can loosen up and cause issues.

charger 69

Hey thanks, I'll keep an eye on it now.

Boatnik

After replacing the spade connectors on the FSS a couple of times I finally replaced them with ring terminals. Easy fix. Just don't over tighten the terminal nut.