Quote:
Originally Posted by wedgemon
I'm guessing the "assumed" full tank was the left one. And nothing happened when you switched to it. Correct? Dual tanks DEFAULT to the right or passenger side tank when the switch valve freezes or faults (electrical short). The gauge still will reflect the tank as full, but switch over never happens - and you run out of gas on the right side tank.
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And the switch is that black doodad on the right frame, just in front of the right fuel tank, right? Haven't gone that far back yet, but I saw it.
So the fact that I was told upon receiving this truck to only use the right tank could be a good indicator of a bad switch? And if someone was to flip the selector switch in the cab, could it then cause the switch to not select either tank?
Quote:
Originally Posted by wedgemon
You need to get some fuel in the right tank and see if it starts. Then, you need to determine if freezing or a short is the switch problem. Mine was a metal screw through the doorsill into the dome light wiring - go figure.
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Oh, no, now I'm getting scared. This truck is a wiring nightmare. My grandpa gave it to me, and every time I crawl under it I find another magical wire that seemingly goes nowhere. Guess it's time to get me some wiring diagrams...
Quote:
Originally Posted by benoit454
As cheap as block mounted fuel pumps are you should just replace it.
I've bought several the last few years for different vehicls and for a small block chevy they are about $15.
Other then that, time to drop tanks, pull lines, make sure they are clear by blowing through them with compressed air, and make sure the sock on the bottom of the pickups isn't clogged up. I'd replace thoose too they are cheap.
Then you can find the best looking tank and plum straight into only that one and loose the other if ya want.
it be cheaper the replacing the selector valve and all that stuff I'd think.
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Sweet, I'm glad to hear the parts are cheap.
Thanks for the insight, guys, but I'm still curious as to why the gauges are pegged. Anyone know what exactly would cause that symptom? At this point I'm figuring that my problem is electrical in nature, mainly so I can exhaust all other possibilities before dropping the tanks.