Re: 1955 Fleetwin, running hot?

[fisherman6]

Very good catch, Don. That is most likely your only problem. Replace that plug and you should be good to go. I have a ’58 Johnson 7.5 that blew out the one on the side just above the one you have missing. Without the passages in the cylinder head plugged the leg doesn’t get water flow where it needs it. I replaced the Welch plug and all is well with coolingreat now. I would be willing to bet you will have the same result.

If you don’t see water running out of the lower cowl, I do find that strange, however. I had water pouring out all over with the side Welch plug missing.
-Ben

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