92 200xp bottom 2 cylinders running rich

[v8etr]

My 1992 evinrude 200xp is running rich on the bottom 2 cylinders are rich, when I pull the plugs these 2 are black all of the rest look good. I bought the boat from lake of the ozarks and now it is in 3200ft (altitude). it has spark and good comp. It will foul these 2 plugs sometimes.

[ChampioNman]

Check your jet sizes.

[OrygunBasser]

Make sure the jets have not backed out on those carbs, it happens!!!

[v8etr]

Jets are factory. and they are tight

[SEAHORSE]

Pull #5 and #6 jets to see if they are2 sizes larger than the others. There was a service program back in those days to put larger jets in new motor to keep those bottom cylinders free from detonation.

[v8etr]

so should i change those two jets?? I messed with the motor yesterday and noticed that the primer valve lever would leak a little fuel from around it, could that cause the problem??

Thanks

[v8etr]

no one?

[ChampioNman]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by v8etr &raquo;</TD></TR><TR><TD CLASS="quote">so should i change those two jets?? I messed with the motor yesterday and noticed that the primer valve lever would leak a little fuel from around it, could that cause the problem??

Thanks</TD></TR></TABLE>
Primer valve probably has a hairline crack in it or the O ring is bad that happens. Compare the other jet sizes and change the bottom two 2 sizes up from the rest. Check your mids also.

[v8etr]

ok thanks I replaced the little red switch and the o-ring and I put a new gasket in it with a new top.

Thanks