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Thread: BBC Blown Injected Engine

  1. #1
    Junior Member SHOW GUEST
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    BBC Blown Injected Engine

    Working with a friend on his willys. 502 blown, injected chevy. Now the problem, car starts, runs fine until its up to temp. When shut off, it will not start until it cools down. Motor turns when hot but will not fire. Fuel pressure 50psi when cranking. removed blower today to replace magnetic pickup in distributor. Can't get at the cap with blower in place. Have spark at plugs. Car still will not fire when hot, let it sit till it cools and it fires immediately. Could this be a bad coil????? OR WHAT ELSE, MY BUDDY IS GOING CRAZY!!!!!!!!

  2. #2
    Senior Member MASTER BUILDER
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    This problem was talked about in another thread somewhere. The suggestion was that the static compression may be too low. I have a blown bbc car, have not had this problem.

  3. #3
    Senior Member RACING JUNKIE
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    What kind of injection, i am assuming electronic not mechanical? Will it try to fire hot if you dump fuel in the hat? Are you just assuming its loosing spark?

    Need to know more about what kind of set up you have

  4. #4
    Senior Member RACING JUNKIE
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    Quote Originally Posted by kwkracing
    What kind of injection, i am assuming electronic not mechanical? Will it try to fire hot if you dump fuel in the hat? Are you just assuming its loosing spark?

    Need to know more about what kind of set up you have
    X2, he said it had spark at the plugs, i've ran as low as 8.0 to one but with a short cam duration, no problems firing. I'm thinking it's a fuel problem. I run blown alcohol with 10.0 to 1 and sometime have too give i little shot of gas when it's warm.

    Zip.

  5. #5
    Senior Member RACING JUNKIE
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    But Zip, he says it has spark, but he is also asking if the coil is bad, so i am assuming he doesnt know if it has spark or not when it gets hot. Lol. I believe its a fuel prob too.

  6. #6
    Senior Member RACING JUNKIE
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    Quote Originally Posted by kwkracing
    But Zip, he says it has spark, but he is also asking if the coil is bad, so i am assuming he doesnt know if it has spark or not when it gets hot. Lol. I believe its a fuel prob too.
    Yah, you're right, not enough imfo.

    Zip.

  7. #7
    Senior Member RACING JUNKIE
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    Spark

    Well?
    I se He replaced the Mag.Pick-Up in the Dist.So it DONT Have a Mag?It could have Spark with the current more than likely MSD set-up,just NOT Enuff...........?
    Put a Super Mag in it and Light the FIRE!'
    Later
    G 8)

  8. #8
    Senior Member RACING JUNKIE
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    No, im sure its a msd and a electronic efi for a street show car? But i guess we will never know?


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