www.iFourWinns.com

Gents,

A week ago I replaced the seawter pump on starboard engine. I washed both motors. Today the port motor cranks but will not start. Neighbor put screw driver to spark wire and seems no spark coming out. Any ideas or suggestions?

2006 288 Merc 5.0 mpi bravo 3

No spark could mean bad coil.

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-Tony
2016 Robalo R200 w/Yahama 200!

Previous boats:
2003 Four Winns 248 Vista - sold
1994 Sunbird Corsair 200 - sold
1980 Checkmate Predictor - sold

"I washed both motors".....
Sounds like you got water where it shouldn't go. You may have to dry out the system by disconnecting electrical connections and drying them out.

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88 Four Winns 200 Horizon
4.3 OMC Cobra-4bbl
2002 Walker Bay 10/2012 Suzuki 2.5
2008 Walker Bay 8

1998 Jeep Grand Cherokee 4.0/Selectrac
2007 Jeep Grand Cherokee 5.7 Hemi/Quadradrive II

I had a recent issue on one of our boats running a 5.0 Mercruiser. Process we followed was:
Spark plugs check
HT leads check
Distributor cap check
Ignition coil check
Pickup sensor check
ECU check

Thankfully chased down to the Pickup sensor being corroded as this was a cheap replacement compared to the cost of a new ECU! Good luck with it.

Should also say, if the spark plugs are wet (with water) then you need to be chasing down the cause of water in the engine... hope this is not the case for you.