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15 hp Johnson has spark, fuel, air but not cranking...
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<blockquote data-quote="sharrison" data-source="post: 283731" data-attributes="member: 9158"><p>Are the plugs wet when you pull them out after trying a few times to start it?</p><p></p><p>Have you checked the low speed needle to see how far out it is? I had an issue with a 9.5 johnson when the needle was out too far. I turned it all the way in then out 1.5 turns and it fired right up. </p><p></p><p>Does the primer bulb stay firm after a few pumps?</p><p>If not pull fuel pump and make sure the diaphram isn't busted and pumping gas through the pulse port into the cylinder. Once you pull it the backside should be wet, you can also squeeze the primer bulb to check.</p><p></p><p>Also another thing to try is to unhook the gas tank and try spraying some mixed gas into the carb to see if it will fire? That sometimes will rule out a stuck or high float since there will be no gas in the bowl and it only has the gas you spray in it to fire on.</p></blockquote><p></p>
[QUOTE="sharrison, post: 283731, member: 9158"] Are the plugs wet when you pull them out after trying a few times to start it? Have you checked the low speed needle to see how far out it is? I had an issue with a 9.5 johnson when the needle was out too far. I turned it all the way in then out 1.5 turns and it fired right up. Does the primer bulb stay firm after a few pumps? If not pull fuel pump and make sure the diaphram isn't busted and pumping gas through the pulse port into the cylinder. Once you pull it the backside should be wet, you can also squeeze the primer bulb to check. Also another thing to try is to unhook the gas tank and try spraying some mixed gas into the carb to see if it will fire? That sometimes will rule out a stuck or high float since there will be no gas in the bowl and it only has the gas you spray in it to fire on. [/QUOTE]
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15 hp Johnson has spark, fuel, air but not cranking...
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