boat cranks but wont startr
Air fuel and spark...start with spark, then verify fuel with a fuel pressure gauge or test light, then check compression. If you have all three it should run
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Re: boat cranks but wont startr
Did you check the oil pressure sensor?
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boat cranks but wont startr
For basic diagnostic: If its a Holley carb start by taking off the flame arrestor on top of the carb. Have someone pump the throttle while you look down the carb, paying attention to the front two barrels. When the throttle is pumped you should see a stream of fuel come from the squirter, which is located between the two front barrels towards the front of the barrels with a Phillips head screw on top. The stream of fuel will hit the venturi, the little round thing in the middle of each barrel. For the sake of basic diagnostics if it squirts you have fuel.
Next check your spark. Remove a spark plug, put the wire back on it and hold the head of the plug against the block or anything else metal. Keep your fingers on the plug boot so you don't get a zap from the coil, and have someone try to start the engine. You should see the plug sparking as the engine turns over.
Try this and report back!