Won't start when switch gas tanks

Tiny
LNEVADA
  • MEMBER
  • CHEVROLET SILVERADO
I have a 1987 Chevy Silverado truck with 167,000 miles and a 350 engine. It has two fuel tanks which were both working fine when I drove to the gas station. I used the left tank to drive there and could switch between tanks on the way. At the gas station I filled up the right tank, started driving away and switched to the right tank and the truck died. When I try to start the truck with the right tank it sounds like it is turning over but won't start. If I switch to the right tank when already started the engine immediately dies. Everything is working great as long as I only use the left tank. Thanks to anyone who can help :)
Tuesday, October 9th, 2007 AT 11:32 PM

1 Reply

Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
Check for power to the pump on the right tank, if there is power there, it's probably the pump or the connector. In which case I would check fuel pressure and volume if necessary from that right tank. If there isn't power to the pump may be at the switch. Not sure if there is a separation of fuses or relays between the pumps, you'll need to check that on the fuse. Realy box (es).
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Wednesday, October 10th, 2007 AT 7:35 AM

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