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Lost of Power

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by hafa213, Feb 20, 2001.

  1. hafa213

    hafa213 Registered Member

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    Need help!! I have a 350 small block with headers.replaced gasket with the copper one's and they leak pretty bad. would this cause lost of power. or could it be somthing else. I replaced spark plug wires,spark plug,cap and rotor.need your help!!!
     
  2. muddin4fun

    muddin4fun 3/4 ton status

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    If you hear what sounds like an exhaust leak near the block or down at the collector, then yes. Did it happen first thing right after you put on the headers? What brand headers are they?

    [​IMG] Keep your feet dry [​IMG]
     
  3. HarryH3

    HarryH3 1 ton status Author

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    If the power's way down, then double check that you installed the plug wires correctly. It only takes 2 wires installed to the wrong plugs to make a V8 really run like crap!

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
     
  4. hafa213

    hafa213 Registered Member

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    yes,right after i installed the copper gasket sounds to be a the block. so i returned it to GI joe's and replace it with Mr. gasket. it seems to be a lot better. still have a little noise. but a better improvment.i think i should replace my wires to silicone wire. i might have a broken one somwhere what do you think.
     
  5. dyeager535

    dyeager535 1 ton status Premium Member

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    Throwing money at something that may or may not be the problem gets expensive : ) Start the truck, and pull each plug wire off individually. If pulling the wire affects the idle of the truck, the wire is good. If pulling the wire does NOT affect idle, the wire, plug or cap is bad. JUST went through this on my truck. BTW, If you EVER have a loose terminal on the cap, replace it. That terminal is what keeps the rotor contact piece inline, and if its loose, the rotor WILL eventually hit it and bend it out of the way, causing no spark on that terminal.

    Dorian
    My K5 and Chev/Olds tech/links page: <A target="_blank" HREF=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</A>
     
  6. muddin4fun

    muddin4fun 3/4 ton status

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    make sure the collector gaskets are good too. it's real easy to warp the headers. you might also have warped heads. I've heard some people putting double gaskets on their headers, but i've never done it

    [​IMG] Keep your feet dry [​IMG]
     

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