08-07-2006, 08:50 PM
Jets in the carb. My Merc 20 did the exact same thing. Would foul out plugs after 1 trip to the berry. I changed the the 7000+ foot jets (according to the merc chart, I'm sure evinrude has the same chart) and it runs like a striped ape now! The jets in the carb are easy to change, (1/2 hour or so) and only cost $4.00. I can't remember whether there was one or two in my single carb. If the motor runs fairly normally most of the time at the lower altitudes (Utah Lake, Willard, etc.), but only fould plugs up at the higher altitudes, that is almost a certainty that is the problem. Hope this helps.
Randy
[signature]
Randy
[signature]
I used to N.ot have E.nough T.ime O.ff to go fishing. Then I retired. Now I have less time than I had before. Sheesh.