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    1973 Johnson V4 cylinder 1 overheating

    Oh thanks could this cause all the cool water to flow to the lower cylinder and not cool the to one?
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    1973 Johnson V4 cylinder 1 overheating

    Ok thanks for the idea! Compressed air won’t hurt anything right?
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    1973 Johnson V4 cylinder 1 overheating

    Had the engine running great last week. New impeller installed at the start of the season no more than 3 hrs on it. I thermally tested all the heads after the impeller installed and they all were all running at approximately 140 f. Then after I fixed a seal issue in the lower unit the other day...
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