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lammbn · 07-24-2008, 01:34 AM

Please bear with me on this. i just got done with putting my bike togather after working on it since 7am this morning, or i guess its yesterday moring now ( currently 1:30am my time). this was the third day straight of working on my bike like this. after everything i did i expected at least one thing to go wrong but i'm a little confused with this one. long story short i was installing a self made sandwich type oil mod and figured if i had the bike torn down that far i might as well do everything else why i was at it. but as far as the carbs go i was planning on tearing the bowls and the top diaphram/plunger apart and cleaning everything up even though i've had no problems in that department with this bike. after i tore the first diaphram/plunger apart, #4 carb i believe, i saw that it looked spotless. and since i had never had any problems and didn't believe that it was really needed i just put it back togather and decided to just concentrate on everything else and get this all done.

now looking back i realize that i did do a big no-no according to the clymers manual. in order to be able to take the dome/cap off easier i took the bottom half of the air box plenum off the carbs allowing them to flex and twist a little while i was messing with them.

but now that i have everything done and back togather i have a big problem on my hands. the carbs are leaking tremendous amounts of fuel when the bike is running and only when its running. i kill it, they stop leaking. i would say that it is at least half a gallon per minute if not more. when i noticed it i quickly got my compressor and blew everything off so that it would evaporate and cleared the air out of my garage quickly. it just looks like it is coming from everywhere when you look up into the carbs while its doing it though.

I've given up for the night and am trying to figure out what i need to look into first when i get them back out but i don't know these quad carbs very well. my first thoughts are that since it is not doing it when its not running but still has full fuel pressure from the pump it cannot be the floats, the fuel connecting pipe, or any of the starter jets. i could see it being the diaphram i took apart if it was getting too much vaccum. but if anything when i put it together i didn't get it sealed right and it would be losing vaccum.

please, all of you who know these carbs. is there anything i could have done by either taking that apart or any twisting/flexing while the air box was off that i need to look at that would cause these symptoms?

07-24-2008, 01:34 AM	#1 (permalink)
lammbn Junior Member Join Date: May 2008 Last Online: 08-08-2008 04:25 PM View my Photo Gallery Posts: 9 Thanks: 0 Thanked 1 Time in 1 Post	Carbs leaking ~1GPM! Please bear with me on this. i just got done with putting my bike togather after working on it since 7am this morning, or i guess its yesterday moring now ( currently 1:30am my time). this was the third day straight of working on my bike like this. after everything i did i expected at least one thing to go wrong but i'm a little confused with this one. long story short i was installing a self made sandwich type oil mod and figured if i had the bike torn down that far i might as well do everything else why i was at it. but as far as the carbs go i was planning on tearing the bowls and the top diaphram/plunger apart and cleaning everything up even though i've had no problems in that department with this bike. after i tore the first diaphram/plunger apart, #4 carb i believe, i saw that it looked spotless. and since i had never had any problems and didn't believe that it was really needed i just put it back togather and decided to just concentrate on everything else and get this all done. now looking back i realize that i did do a big no-no according to the clymers manual. in order to be able to take the dome/cap off easier i took the bottom half of the air box plenum off the carbs allowing them to flex and twist a little while i was messing with them. but now that i have everything done and back togather i have a big problem on my hands. the carbs are leaking tremendous amounts of fuel when the bike is running and only when its running. i kill it, they stop leaking. i would say that it is at least half a gallon per minute if not more. when i noticed it i quickly got my compressor and blew everything off so that it would evaporate and cleared the air out of my garage quickly. it just looks like it is coming from everywhere when you look up into the carbs while its doing it though. I've given up for the night and am trying to figure out what i need to look into first when i get them back out but i don't know these quad carbs very well. my first thoughts are that since it is not doing it when its not running but still has full fuel pressure from the pump it cannot be the floats, the fuel connecting pipe, or any of the starter jets. i could see it being the diaphram i took apart if it was getting too much vaccum. but if anything when i put it together i didn't get it sealed right and it would be losing vaccum. please, all of you who know these carbs. is there anything i could have done by either taking that apart or any twisting/flexing while the air box was off that i need to look at that would cause these symptoms?