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Thread: 2a Backfires though carb.. timing?

  1. #1
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    Post 2a Backfires though carb.. timing?

    Hi all!

    I have been working on a new project and its a '46 CJ-2A. Everything has been working well until I tried going up hill. I have tried maxing out the throttle while stationary and this doesn't happen. When I go uphill (or maybe apply enough torque) the engine starts to backfire and lose power. Oddly enough, the choke likes to engage more and more when this is happened. I am diagnosing the problem, but would anyone think it would be a timing or exhaust problem? I am currently checking points today.


    Thanks and any help is much appreciated


    Keith

  2. #2
    Super Moderator LarrBeard's Avatar
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    Since it only misbehaves on hills, I'd guess carburetor. When things tilt, gas slops around into somewhere it shouldn't be - or leaves somewhere it should be. Wanting choke also hints at a fuel problem. Look at gaskets, float, inlet needle valve and seat ... etc.

    But, since it's an old Jeep - it's probably the pressure in the left rear tire .

    Let us know what you find.

  3. #3
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    Quote Originally Posted by LarrBeard View Post
    Since it only misbehaves on hills, I'd guess carburetor. When things tilt, gas slops around into somewhere it shouldn't be - or leaves somewhere it should be. Wanting choke also hints at a fuel problem. Look at gaskets, float, inlet needle valve and seat ... etc.

    But, since it's an old Jeep - it's probably the pressure in the left rear tire .

    Let us know what you find.
    Thanks I check it out and will do

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