YamahaC40Guy
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- Dec 1, 2008
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He guys, haven't posted here in a while but have been lurking. Have a question for you all, hoping you can help;
After running my '99 C40 for a couple of seasons, I've had my first problem with it. Here is the story;
1.run between April and October, 4-6 days a month on average
2.winterized prior to storage in outdoor/covered spot (in southern Ontario, Canada)
3.run Yamalube as the oil, use low 87 grade gas
4.trouble-free service, decent fuel-economy
This spring, it fired-up fine, burned-off the rich gas in the lines he put in there (with stabilizer, as I understand it) Everything seemed normal, but it did seem to smoke a bit and really burn through the gas. Then, didn't idle well. Next-up, didn't reach full power when opened-up and would stall when in neutral. I did everything I could do to remedy this (changed the plugs :wink: ) and while the old ones were gummed-up pretty good, it did nothing to remedy the situation. Off to the mechanic.
After a total tear-down/clean-up of the carburetor he told me that it was a build-up of ethanol residue that had clogged things-up. I asked if a fuel stabilizer would have prevented it, he said that a product like Sea Foam or Yamaha's "Ring Free" might, the latter being something plenty of Yamaha owners swear by. Asking around to fellow boaters I know, they told me that it isn't the ethanol in the gas, rather, the ethanol's effect on plastic gas tanks and rubber fuel hoses that causes this residue. (?) I've now read enough about Ring Free to order a bottle, but is there something I should be doing differently? I haven't run the boat since the work was done, but I'm about 100% sure it'll now be running like a top now. Just hoping to avoid this problem if possible. I've read that running high octane (little/no ethanol added) isn't a good idea for outboards.
Thanks for taking a moment to respond,
Rob
After running my '99 C40 for a couple of seasons, I've had my first problem with it. Here is the story;
1.run between April and October, 4-6 days a month on average
2.winterized prior to storage in outdoor/covered spot (in southern Ontario, Canada)
3.run Yamalube as the oil, use low 87 grade gas
4.trouble-free service, decent fuel-economy
This spring, it fired-up fine, burned-off the rich gas in the lines he put in there (with stabilizer, as I understand it) Everything seemed normal, but it did seem to smoke a bit and really burn through the gas. Then, didn't idle well. Next-up, didn't reach full power when opened-up and would stall when in neutral. I did everything I could do to remedy this (changed the plugs :wink: ) and while the old ones were gummed-up pretty good, it did nothing to remedy the situation. Off to the mechanic.
After a total tear-down/clean-up of the carburetor he told me that it was a build-up of ethanol residue that had clogged things-up. I asked if a fuel stabilizer would have prevented it, he said that a product like Sea Foam or Yamaha's "Ring Free" might, the latter being something plenty of Yamaha owners swear by. Asking around to fellow boaters I know, they told me that it isn't the ethanol in the gas, rather, the ethanol's effect on plastic gas tanks and rubber fuel hoses that causes this residue. (?) I've now read enough about Ring Free to order a bottle, but is there something I should be doing differently? I haven't run the boat since the work was done, but I'm about 100% sure it'll now be running like a top now. Just hoping to avoid this problem if possible. I've read that running high octane (little/no ethanol added) isn't a good idea for outboards.
Thanks for taking a moment to respond,
Rob