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`72 Evinrude V4 Problem
Chehalis Jeff wrote:
But he said all cylinder compression values were very close. If they aren't leaking down, then how is that water getting in? This is something that I have and are still considering as a possible problem. I called a local OMC repair shop and that's what they suggested - that when the engine gets warm enough and with enough "suction" on the down stroke it could draw in just enough water (from a 'partially blown head gasket') to affect how it runs under load but not enough to effect it otherwise. It's a possibility, however I would think that there should be a way to tell if that's happening without removing the head(s) and replacing the head gaskets. On the other hand, that's not really a big, expensive or difficult job so maybe it's worthwhile doing as a precaution. JM The suggestions here is check everything else & try a tune, then take the heads off. At that age there is probably a buildup of salt deposits in the system. along with the overheat adding even more & a good cleanup will not do any harm. Replacing the cyl head gaskets is not a huge job, it's a 2 stroke & the heads are not much more than lids on the block. Hope it goes OK K |
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