1997 ranger 2.3l

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    Solved! 2.3l running rough during warm up + Need help to find better valve springs

    have seen this problem posted multiple times, but never a solution. I stumbled on the answer after widening search to whole web. During warm up, the exhaust valves expand quickly and can stick open, causing rough idle, loss of power, check engine lights. when valve guides/heads heat...
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