Question about Boating
High speed jet in carb is blocked disassemble carb remove jets and dip jets and carb assm in carb cleaner ( it comes in a gallon can with a parts tray in the can ) available in most autoparts stores BEWARE remove all Rubber O-rings and gaskets before dipping let set overnite or a couple of hours then blow parts off and reassemble. as far as adjustment screws just turn then in until they stop and count the turns then remove them. When reassembleing just reverse the procedure insert turntil they stop then back them out the number of turns that you wrote down. I had to do this with a 1985 150hp V6 with six carbs and it fixed all my problems as well as a 1976 25hp Johnson. Good Luck
Posted on Aug 06, 2009
Check for spark against the block. they sell a test kit, i think harbor freight sells one, where you hook it in line and should be able to see if it is firing or not.
Posted on Jul 29, 2009
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Posted on Jan 02, 2017
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Jul 09, 2017 | Cars & Trucks
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Dec 09, 2015 | Cars & Trucks
Many things you could check.
Engine to small for the boat.
Not enough fuel deliver when in full throttle.
Engines compression test.
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