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well, blckryno was kind enough to come over and take a look at my bike. we started out using a colortune to check the fuel mix on each cylinder. on all the cylinders, the idle mix screws changed nothing, the mix was usually pretty close to the blue color it is supposed to be. but even if we closed off the idle mix screws, nothing would change. the other problem we ran in to was fuel delivery, especially to the #1 carb. it would spark regularly, but then would only fire every second and a half or so. the number 4 carb would switch from getting the right amount of fuel, to too little, to too much all with no adjustments. right now we are at the point where the rpms will rise on their own and we have to kill the engine (i checked again yestersday for vacuum leaks) anyone have any ideas to help us out?
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1979 xs special, just finished the top end rebuild and then i still have lots of work.
progress thus far...
http://s1268.photobucket.com/albums/...t=IMAG0202.jpg
"If it runs bad, it's usually the carbs. If the tires go flat, I suspect the carbs. If the wind blows the bike over, the carbs were probably to blame. If my wife yells at me about something, I tell her to talk to the carbs" -Incubus -
Limp it over to the rally in WI this weekend and we will fix it
Nathan
KD9ARL
μολὼν λαβέ
1978 XS1100E
K&N Filter
#45 pilot Jet, #137.5 Main Jet
OEM Exhaust
ATK Fork Brace
LED Dash lights
Ammeter, Oil Pressure, Oil Temp, and Volt Meters
Green Monster Coils
SS Brake Lines
Vision 550 Auto Tensioner
In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.
Theodore Roosevelt -
i want to, but i've got work all weekend. about 34 hours worth friday to sunday.1979 xs special, just finished the top end rebuild and then i still have lots of work.
progress thus far...
http://s1268.photobucket.com/albums/...t=IMAG0202.jpg
"If it runs bad, it's usually the carbs. If the tires go flat, I suspect the carbs. If the wind blows the bike over, the carbs were probably to blame. If my wife yells at me about something, I tell her to talk to the carbs" -IncubusComment
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Did you pull the idle needles and verify the tips arnt broke off and stuck in the carb bodies? Sounds like you need to vacuum sync also...'79 XS11 F
Stock except K&N
'79 XS11 SF
Stock, no title.
'84 Chevy K-10 "Big Blue"
GM 350, Muncie SM465, NP208, GM 10 Bolt with 3.42gears turnin 31x10.5 Baja Claws
"What they do have is an implacable, unrelenting presence and movement that bespeaks massive power lurking behind paint and chrome. They don't wail like a screeching ninja, the don't rumble like a harley. They just growl like a spactic, stressed out badger waiting to rip your face off and eat your soul." Trainzz~RIP~Comment
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