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My Mercury 90/65 is hard to start. Not sure what else to try
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<blockquote data-quote="turbotodd" data-source="post: 411276" data-attributes="member: 7376"><p>Does it have a real choke, or is it a prime start? Not familiar with that particular motor, but you're describing an issue that is related to cold engine fuel enrichment.</p><p></p><p>Prime start is just a valve that opens up a passageway in the carb. Lots of times the passageways are made of an air passage and a fuel passage down in the bowl somewhere. The passage in the bowl is usually tiny, and doesn't have a replaceable jet. They're so small that they tend to plug quickly and easily. </p><p></p><p>If it's got regular choke plates, have someone hit the choke while you look down the carb throats. The choke plates should close all the way. On the old school 2 stroke stuff with a mechanical choke in this style, it helps to advance the fast idle to near full throttle, hit the choke and then turn the key to start. Once the engine "pops", or attempts to start, let off the choke and then drop the throttle back to idle then attempt to restart. Should kick off.</p><p></p><p>If it's a prime start with no choke plate, advancing the throttle while cranking a cold engine makes it even harder to start. Just leave the throttle lever at idle and it should start if everything's working properly.</p></blockquote><p></p>
[QUOTE="turbotodd, post: 411276, member: 7376"] Does it have a real choke, or is it a prime start? Not familiar with that particular motor, but you're describing an issue that is related to cold engine fuel enrichment. Prime start is just a valve that opens up a passageway in the carb. Lots of times the passageways are made of an air passage and a fuel passage down in the bowl somewhere. The passage in the bowl is usually tiny, and doesn't have a replaceable jet. They're so small that they tend to plug quickly and easily. If it's got regular choke plates, have someone hit the choke while you look down the carb throats. The choke plates should close all the way. On the old school 2 stroke stuff with a mechanical choke in this style, it helps to advance the fast idle to near full throttle, hit the choke and then turn the key to start. Once the engine "pops", or attempts to start, let off the choke and then drop the throttle back to idle then attempt to restart. Should kick off. If it's a prime start with no choke plate, advancing the throttle while cranking a cold engine makes it even harder to start. Just leave the throttle lever at idle and it should start if everything's working properly. [/QUOTE]
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My Mercury 90/65 is hard to start. Not sure what else to try
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