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EVINRUDE 9.9 - Doesn't run great all the time - '76
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<blockquote data-quote="Pappy" data-source="post: 354064" data-attributes="member: 3278"><p>Just a question here...are you still running your "winter blend" gasoline? </p><p>If you even think you are then ditch whatever fuel you have left and simply get some fresh fuel and try it. </p><p>What you are describing sounds like a classic "Heat Soak" scenario. Fuel additives may also increase the possibility of heat soak.</p><p>Not going to go into a long explanation of heat soak here. Look it up if interested. Carbureted outboards are definitely prone to it and most prone right after Winter while the fuel in the tank may still have some winter blend gasoline in it. </p><p>Do the simple things first....this is definitely one of them. </p><p>By the way... the magic time for this to occur seems to be around the 20-30 minute shut down time after a good run. A check for it is that once you do get it started when experiencing this...and get it up on plane you can shut it off and restart and plane off repeatedly without issue until the next period of 20-30 minutes of shut down time.</p></blockquote><p></p>
[QUOTE="Pappy, post: 354064, member: 3278"] Just a question here...are you still running your "winter blend" gasoline? If you even think you are then ditch whatever fuel you have left and simply get some fresh fuel and try it. What you are describing sounds like a classic "Heat Soak" scenario. Fuel additives may also increase the possibility of heat soak. Not going to go into a long explanation of heat soak here. Look it up if interested. Carbureted outboards are definitely prone to it and most prone right after Winter while the fuel in the tank may still have some winter blend gasoline in it. Do the simple things first....this is definitely one of them. By the way... the magic time for this to occur seems to be around the 20-30 minute shut down time after a good run. A check for it is that once you do get it started when experiencing this...and get it up on plane you can shut it off and restart and plane off repeatedly without issue until the next period of 20-30 minutes of shut down time. [/QUOTE]
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EVINRUDE 9.9 - Doesn't run great all the time - '76
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