Question about 1986 Chevrolet K1500

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I have a 1987 mercruiser alpha one out drive the boat sat for 5or 6 years engine turns over but no spark also had water in the cylinders drained the oil filled the cylinders with mystery oil let it sit for a few days cranked the engine a few times drained the oil again new oil new fuel new oil filter but cant get a spark from the coil

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  • Mr D 427 May 11, 2010

    after cranking it now, do you see any water in the oil? take an assistant, and a new spark plug to the boat with you, take one wire off the plug in the motor and put the new plug in the wire. Hold the plug against a grounded item ( somewhere on the motor) have your assistant crank the boat and see if you have a visible spark. If you have tested this already you may need to replace the coil itself.

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Alpha One is the out drive, what engine do you have? Remove the distributor cap and verify if your ignition is electronic or contact points. Either way, I recommend going with a Pertronix electronic ignition. This module is a simple drop in installation and will eliminate a major portion of your troubleshooting. Pertronix also has a high output coil to accompany their ignition, I recommend you install both as a set.
FYI, water in the cylinders is not good. Especially if it sat for 5-6 years rusting the rings and cylinder walls. Was this boat running when it was parked and do you know the history?
Nick

Posted on Dec 27, 2009

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