1985 chevy Silverado water in fuel light

Asked by Oct 02, 2017 at 04:20 PM about the 1985 Chevrolet C/K 10 Silverado RWD

Question type: Maintenance & Repair

I have a 1985 chewy Silverado 4 wheel drive diesel  
and it's been sitting a couple months and it wouldnt
start. I already replaced the fuel filter and the tanks
have gas in them. The truck try's to turn but the
water in fuel light appears and that's about it. I'm
thinking of cleaning the tanks but I'm not even sure
what I'm doing. I also tried the peacock water
release but nothing came out. Thanks for the help

1 Answer

186,695

It is a diesel, and by gas you do mean diesel and not gasoline right? Back then there was a lot of problems with the water sensor on those units, that is why most everyone went with a different fuel/water separator system and either deleted the water in fuel warning or installed a more reliable unit. Are you getting fuel to the injection pump without any air in it? Injection pumps don't like air in the fuel, anything after that will take some special tools and gauges to check pump pressures and injector patterns. Hopefully there wasn't any water in the injection pump,, if there was chances are high that the pump is ruined and won't make enough pressure to fire the injectors.

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