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2009 mercury 20hp 4 stroke not running right
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<blockquote data-quote="turbotodd" data-source="post: 264583" data-attributes="member: 7376"><p>Does the 20 HP Mercury have overheat limit? If it does...it "could" be in the pump (low volume).</p><p></p><p>I know on the smaller Yamaha's (all I've dealt with in any detail-haven't messed with Merc, Mariner, OMC much), they have overheat limit built in. If engine temp exceeds I believe 196 degrees, the CDI limits engine speed to about 2000 RPM. Just barely above an idle. Typically the complaint I get is "runs great for 10-15 minutes, then falls on it's face...shut it off, let it cool, does it all over again". </p><p></p><p>Not saying yours is "that" problem...but could be. But if it's running good now, I reckon it's good to just leave it as it is until it breaks.</p></blockquote><p></p>
[QUOTE="turbotodd, post: 264583, member: 7376"] Does the 20 HP Mercury have overheat limit? If it does...it "could" be in the pump (low volume). I know on the smaller Yamaha's (all I've dealt with in any detail-haven't messed with Merc, Mariner, OMC much), they have overheat limit built in. If engine temp exceeds I believe 196 degrees, the CDI limits engine speed to about 2000 RPM. Just barely above an idle. Typically the complaint I get is "runs great for 10-15 minutes, then falls on it's face...shut it off, let it cool, does it all over again". Not saying yours is "that" problem...but could be. But if it's running good now, I reckon it's good to just leave it as it is until it breaks. [/QUOTE]
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2009 mercury 20hp 4 stroke not running right
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