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Old 03-02-2006, 12:32 PM
Michael Vezzosi Michael Vezzosi is offline
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Join Date: Jul 2003
Location: Bluffton, South Carolina
Posts: 448
Default Re: Decarbonizing 1999 Johnson 175 Carb.

PeterB, I have not yet checked the compression.
Scott, OMC SS 14 1/2" X 19". Since 1999. Perfect match.
BigS, I think you are on to something. That sounds closest. Remember I used original plugs that were used during the decarb, because I didn't THINK that they were that bad. Boat ran flawlessly all day until I wanted to run WOT for a minute or so. After sitting on a sand bar for the last hour, we decided to make 5 minute run back to landing. Upon arrival, overheating alarm. Did not run over 3500 revs. to ramp, and was not overtrimmed. Like 12-15 hours on waterpump. Hope to pull plugs today. Thanks all. Part II.
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