Merc 115-4S Dying issues

bacaruda

Recruit
Joined
May 31, 2012
Messages
2
Had boat out first time this year. A little sluggish at first but picked up and ran fine most of the afternoon. We were cruising about 20mph or so, and saw fellow tooner, pulled up to chat while engine idling. While idling for 5-10 min., I noticed a little miss. Went to take off and sputtered and died. Started multiple times but would not go. Finally wouldn't start. Got a tow back to dock and pulled cover. Found I had left oil filler cap off from oil change. Could crankcase venting oil vapor inside cowling cause plug fowling? Also noticed air filter element gone. Looks like had broken-up probably ingested. Now the filter issue could have been anytime, as is this a 2012 boat.
Anyway, with cowl off and oil cap on, it now started fine and ran fast idle fine. Again could oil atmosphere cause this?
Going to get fresh sat of Denso plugs as nobody has the NGK's called for. Also might change low pressure filter.

Wife now paranoid, not going to watch fireworks tonight.

Jim.
2012 South Bay 522CR 115-4S
2009 Dodge RAM Sport 2dr Short Bed 5.7L Black


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