2011 XRT 950 idle issue

[golfcartthing]

OK, I've racked my brain on this thing. It has a 14 hp vanguard engine. when started the engine runs fine, but the idle is, up down up down up down. it does not idle smoothly. i don't know much about these briggs engines. it has done this since it rolled off the truck from clubcar.
-i have cleaned the carb, several times.
-i have set the idle according to the service manual.
-fresh gas
-ran with gas cap off.
it does to seem to run slightly better with the choke pulled out. i believe the engine is starving for fuel. maybe it was jetted for a different altitude? i am unsure.
any input would be greatly appreciated. thanks!

[shadowman]

the jetted part makes sense although i had a much smaller briggs do the same thing it was almost like a gov. trying to kick in..........i would try and find some history on it because the jet idea makes sense, have you tried a different plug to see if it helps? they make plugs for different alitudes......................

[golfcartthing]

have not tried the plug yet. but i'm leaning toward the jetting issue. i'm gonna pull up the parts list and see whats listed.

[shadowman]

i would throw a plug in it and see if it makes any difference cause if it does than you might be on the right track with the jetting.......................