checking for richness on 2.4 merc

[CNT]

Went to the Lake yesturday with a new set of plugs and ran hard (W.O.T.) then shut it down and used electric motor to get back onto trailer. When I got home I pulled plugs to check color. Every plug was white except #5, it was cocoa brown. It seems by the color that motor is running lean excep #5 hole. I'm running .082 's in 1,3,4, 6, and .084's in 2 and 5. Will dirty carbs make motor run lean? It seams to run good on top end. and gets out of the whole fast. It doesn't make sence to me why only one cylinder would have good color when they are all jetted the same except for 2, and 5, wich are known to run leaner. Do I need to jet up all the carb.s except #5 ? Or do I do a good clean out on all the carb.s first?

[Talon2.5]

run the plugs more than 1 outing to get them truly colored then go from there

mine did not "color up" for a few outings and read threads like this.......

http://forums.screamandfly.com/forums/showthread.php?s=&threadid=59320&highlight=plug+reading

http://forums.screamandfly.com/forums/showthread.php?s=&threadid=4071&highlight=reading+piston+tops

there was a post by jay i believe on reading pistons for jetting but i havent found it

[Prof. O/B]

Originally posted by Talon2.5
run the plugs more than 1 outing to get them truly colored then go from there

mine did not "color up" for a few outings and read threads like this.......

http://forums.screamandfly.com/forums/showthread.php?s=&threadid=59320&highlight=plug+reading

If you will look under this topic I also told how to read piston tops
.................Prof. O/B

[Talon2.5]

yep and heres a link to it :D found it............

this is a scan of a print out

http://forums.screamandfly.com/forums/attachment.php?s=&postid=47586

and i found it in this thread from back in 2002........

http://forums.screamandfly.com/forums/showthread.php?s=&threadid=8380&highlight=prof+ob

thanks prof. ob!!