GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

Drop in gas mileage

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Old Jan 16, 2003 | 06:02 PM
  #11  
jlwz71's Avatar
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Default Re: Drop in gas mileage

I get 11 mpg on highway. <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />
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Old Jan 16, 2003 | 09:38 PM
  #12  
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Default Re: Drop in gas mileage

I did the trick where you unplug the relay and run the truck out of gas. Well it worked on my mom's car but on my truck there was still lots of pressure and gas went everywhere!! Now I bleed the fuel pressure from the little port on the fuel rail, just unscrew the cap and push in and the gas comes out. Make sure the engine isn't hot if you do this ghetto method.
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Old Jan 17, 2003 | 09:31 AM
  #13  
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Default Re: Drop in gas mileage

You will still get a little gas out, but not pressure. Did you turn the key back on and listen for your fuel pump not to pressure up to make sure you got the right relay? I'm sure you did if it ran out. But I have done a few and that has not happen to me. Anyway, FYI, look in you owners manual in the fuse section and get the one that says fuel pump. It's the 4 prong relay almost right in the center of the fuse box under the hood. Oh yea, don't break it, those things are expensive. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Greg
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