Re: 54 Johnson RD15A top seal (still) leaks

[frankr]

A few things wrong with your test. For one thing you aren’t holding the carbon seal down as tight as it normally would be. Secondly, when it isn’t running, intake vacuum is not sucking the oil down to the manifold. And of course, we have no way of knowing if the bearing is loose in the crankcase (heck, somebody may have even left the dowel pin out–or didn’t have it aligned).