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  1. O

    4.0 runs ruff and dies when cold

    well it seems to only die and run ruff when you first start it when it's cold. i changed spark plugs and that made no difference. i cuold not see any air hoses off. It could be anything from sensors to air lines or other things. How about giving a little more info on what it does/doesn't do...
  2. O

    4.0 runs ruff and dies when cold

    what do you think causes this.
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