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9.8 merc fuel bulb gets soft motor runs hot
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<blockquote data-quote="KMixson" data-source="post: 417122" data-attributes="member: 432"><p>Does the fuel primer bulb get hard when you pump it with the engine not running? The fuel bulb not getting hard would indicate the float bowl needle valve not sealing completely. If it gets hard the needle valve would appear to be working correctly in my opinion. With the engine running the bulb may not get as hard as with the engine off because there is fuel flowing through the needle valve to keep it running. </p><p></p><p>The motor running hot would indicate a worn or bad impeller or a lean condition on the carburetor. Remember rich is cool and lean is hot. It is much better to be a little rich than to be too lean on the carburetor adjustment. Too lean can destroy your engine. Does it run at the rated RPM's OK? There are others on here that may be able to help you more than me and are familiar with your specific engine. Good Luck.</p></blockquote><p></p>
[QUOTE="KMixson, post: 417122, member: 432"] Does the fuel primer bulb get hard when you pump it with the engine not running? The fuel bulb not getting hard would indicate the float bowl needle valve not sealing completely. If it gets hard the needle valve would appear to be working correctly in my opinion. With the engine running the bulb may not get as hard as with the engine off because there is fuel flowing through the needle valve to keep it running. The motor running hot would indicate a worn or bad impeller or a lean condition on the carburetor. Remember rich is cool and lean is hot. It is much better to be a little rich than to be too lean on the carburetor adjustment. Too lean can destroy your engine. Does it run at the rated RPM's OK? There are others on here that may be able to help you more than me and are familiar with your specific engine. Good Luck. [/QUOTE]
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9.8 merc fuel bulb gets soft motor runs hot
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