L
liberman.kevin
Guest
I cleaned the carbs completly out. The bike idles fine but gwhen i open the trottle it dies down. Im using an auxilary gas bottle and plugged the vacum line. Will bigger main jets help it?
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B
BassCliff
Guest
Hi,
Is the airbox installed?
Thank you for your indulgence,
BassCliff
Is the airbox installed?
Thank you for your indulgence,
BassCliff
G
Guest
Guest
Air box Smair box
M
MisterCinders
Guest
If you have air box in place, what else can you tell us?
Is the choke on?
With a temp tank, I doubt you are at WOT so the mains are not in play. More likely, you are set too rich or lean at idle and opening the throttle kills it.
Did you adjust the valves?
What is the mixture set at?
Is the choke on?
With a temp tank, I doubt you are at WOT so the mains are not in play. More likely, you are set too rich or lean at idle and opening the throttle kills it.
Did you adjust the valves?
What is the mixture set at?
Carbs been properly cleaned?
M
Mop Bucket
Guest
floats set at the right height?
7
7981GS
Guest
Air box Smair box
Stop that! :twistedevil:
Are you forgetting the fear of tuning carbs memo that was sent out?
Or, the one about carbs don't work without being smothered memo?
Daniel
B
BassCliff
Guest
Hi,
I'm just trying to find out what we're working with here. Then we can jet and tune accordingly. :dancing:
Thank you for your indulgence,
BassCliff
chef1366 said:Air box Smair box
I'm just trying to find out what we're working with here. Then we can jet and tune accordingly. :dancing:
Thank you for your indulgence,
BassCliff
L
liberman.kevin
Guest
WOT it bogs
WOT it bogs
no no air box, and no choke on . oh and its been cleaned well ( took each carb indivually out and cleaned) havent checked the float height will do that now
WOT it bogs
no no air box, and no choke on . oh and its been cleaned well ( took each carb indivually out and cleaned) havent checked the float height will do that now
You need the air box if you intend on doing anything more than an idle for an extended period of time.
T
TheCafeKid
Guest
Rule number one:
Vacuum carbs generally will not accept throttle in stock tuning without an airbox installed.
Rule number two:
Cleaning of the carbs requires complete disassembly, soaking the bodies and bowls in parts dip, rinsing, clearing passages with compressed air and or carb cleaning spray, new internal Orings installed, reassembly and bench sync. Failure to do so will result in ongoing problems and a lot of chasing your tail.
I would also suggest checking the slide diaphragms for pinholes and or rips/tears. Make note of your current jet sizes, and compare to stock listings to see if they've been screwed with by a previous owner. Without these proceedures beig performed, any suggestions here are educated guesses and may not necessarily help you.
Vacuum carbs generally will not accept throttle in stock tuning without an airbox installed.
Rule number two:
Cleaning of the carbs requires complete disassembly, soaking the bodies and bowls in parts dip, rinsing, clearing passages with compressed air and or carb cleaning spray, new internal Orings installed, reassembly and bench sync. Failure to do so will result in ongoing problems and a lot of chasing your tail.
I would also suggest checking the slide diaphragms for pinholes and or rips/tears. Make note of your current jet sizes, and compare to stock listings to see if they've been screwed with by a previous owner. Without these proceedures beig performed, any suggestions here are educated guesses and may not necessarily help you.
B
BassCliff
Guest
Hi,
The airbox supplies a metered flow of air into the carbs. With the stock jetting the airbox supplies the proper fuel/air mixture ratio.
Without the airbox the carbs receive way too much air with the stock jetting. If you twist the throttle the engine will die because there is not enough fuel in the fuel/air mixture (too much air!).
Pretty much any modification to the intake or exhaust will require re-jetting of the carbs to compensate.
Thank you for your indulgence,
BassCliff
The airbox supplies a metered flow of air into the carbs. With the stock jetting the airbox supplies the proper fuel/air mixture ratio.
Without the airbox the carbs receive way too much air with the stock jetting. If you twist the throttle the engine will die because there is not enough fuel in the fuel/air mixture (too much air!).
Pretty much any modification to the intake or exhaust will require re-jetting of the carbs to compensate.
Thank you for your indulgence,
BassCliff