Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Mechanical Fuel Pumps

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Anteak, Jul 26, 2002.

  1. Anteak

    Anteak 1/2 ton status

    Joined:
    Nov 7, 2001
    Posts:
    105
    Likes Received:
    0
    Location:
    Hemet, Ca.
    Can a fuel pump (mounted to the engine block) intermittently go out? I have measured 4 to 6 lbs. of pressure after the in-line fuel filter about 4 months ago, but sometimes the clear filter looks almost empty and sometimes it's full. The filter is @ 4 months old and the fuel inside is clean. There is no other filter in the fuel system. My problem is, today while driving to work, the motor started to stumble (tried to die on me) after 30 to 35 minutes of driving. I let off the pedal and let it coast at highway speed and it recovered. I only had another 3 minutes til I was at work and it didn't happen again. I have no way to check it til after work when I get home. I'm just hoping I can make it home. /forums/images/icons/confused.gif Is the pump intermittent or does it just go? The pump could be about 3 years old (PO) install. Anything else I should suspect? Temp this morning was around 70 (poss. vapor lock, not) temp going home will be around 98 /forums/images/icons/crazy.gif
     
  2. xnoahx

    xnoahx 1/2 ton status

    Joined:
    Oct 12, 2000
    Posts:
    817
    Likes Received:
    0
    Location:
    Ventura, CA 93004
    If your fuel filter is clean then I would say its the pump. I had the same problem on an 85 silverado I had. I could drive like normal but sometimes the engine would want to die. A new fuel pump is around $25, just replace it.
     
  3. Anteak

    Anteak 1/2 ton status

    Joined:
    Nov 7, 2001
    Posts:
    105
    Likes Received:
    0
    Location:
    Hemet, Ca.
    Re: Mechanical Fuel Pumps ??

    Thanks. It's not the cost, I know it's next to nothing. I just don't want to chase this issue. Fix what's wrong and not have to worry about it. /forums/images/icons/smirk.gif I should replace it anyways. One less thing to worry about. Was your 85 have a mechanical or electric fuel pump?
     
  4. beachinblazer

    beachinblazer Registered Member

    Joined:
    Apr 15, 2002
    Posts:
    20
    Likes Received:
    0
    I had this problem back in may...i hassled with the fuel pump for 2 days and finally got it on and it turned out the pump was still good. inside the carb on some q-jets is a filter right in the fuel inlet. i replaced this and voila! it ran like a charm (of course that's like 60 bucks down the road i found it)
     

Share This Page