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Fuel problem?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Dresdin, Aug 30, 2002.

  1. Dresdin

    Dresdin Newbie

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    I need help getting her running again. My 85 K5 suddenly has a problem going up hills. It starts lagging right after downshifting and then sometimes totally stalls out. The fuel pump is working, and fuel filter is new... Where should I go now? I've heard about another filter in the tank causing problems... Anyone have experience with that?

    BTW... This forum is awesome, I'm glad I found it.
     
  2. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    How many miles are on the fuel pump? There's a chance that the diaphragm could be getting weak. Combine that with heat-soak and it's starting to look like vapor lock brought on by hard uphill pulls. If you have a 305, there's a good chance that the cam lobe that powers the fuel pump is worn and is contributing to your fuel starvation problem.

    The filter in the tank is a sock-style filter that keep the bigger chunks of crud from entering the fuel lines.
     
  3. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    One more hint, brother. Fill out your profile so that the rest of us know a bit more about you. Location is important because we have members worldwide and one may live a couple of blocks away from you...... /forums/images/icons/smile.gif
     

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