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bonkers_200s
04-12-2010, 03:14 PM
86 Bigred devolped a problem yesterday. You can put around on it all you want but, after wide open throttle for length of time it stops running, then it will fire back again a minute later?


Any hints or clues??
Grizzlypeg
04-12-2010, 03:56 PM
I'd try to rule out fuel starvation. If the tank's vent, petcock or screen can only allow limited fuel flow owing to some blockage, when you run wot it runs the float bowl dry. Check out all of these items.
MudBug
04-12-2010, 06:04 PM
check the plug, black = rich, white/gray = lean youre looking to have it a golden brown color. Id say your carb just needs a good cleaning
bonkers_200s
04-12-2010, 06:24 PM
My first thoughts were fuel starvation the carb has been recently taken apart and cleaned when I first purchased it. I didn't have the time to dig into it before I had to go work were I am wasting time now :D

I'm thinking I may have not cleaned the tank well enough and have some shmoots. I normally put an in line filter in as soon as I get a new toy but didn't on this one yet.
Mr_RPM
04-12-2010, 07:33 PM
I'd try to rule out fuel starvation. If the tank's vent, petcock or screen can only allow limited fuel flow owing to some blockage, when you run wot it runs the float bowl dry. Check out all of these items.

i agree, i had the same exact problem on my old 400ex. blasting at full speed then it just falls on its face.
TeamGeek6
04-13-2010, 03:41 PM
1.) BLACK/BROWN PLUG IS FOULED. Brown is NOT ideal, its fouled allowing the spark to arc down the side of the insulator. the plug MUSt be grey/ white.
2.) If its not badly fouled, start and warm the engine on an old plug, shut it down, QUICKLY change plug, ride at WOT or close and quickly shut the engine off, remove the plug and read it.
cattle-dog
04-13-2010, 06:05 PM
i am betting with the fuel starvation it happened on two diffrent 200s i had one was petcock other was gas cap vent
tri again
04-14-2010, 12:42 AM
for my cap vent, off is off and on is OFF so between on and off is on.

same gd thing with my fuel pet.
reserve is off, on is on and reserve is between wherever its supposed to be

also had some semisubmersible lump of crud that would plug the sediment bowl when the fuel stream was steady