i have a 32/36 weber on a 2f that i have been having trouble with for some time, now. i have limited all of the symptoms and problems down to the carburetor:
it all started with the engine running rough until it warmed up, and, even then, it would still hesitate and misfire through the carb. i found that the carburetor was tuned far too lean from the factory. i installed larger idle jets and worked with the choke. this half way fixed the problem. on a hunch, i forced the carb to drop more fuel by closing the choke off and making the engine run extremely ritch. this cured the problem of it firing through the carb, but, as you may or may not know, the 32/36 is a progressive. while it solved the problem on the first barel, it didn't on the second. the choke was open when the second was engaged casuing the exact same thing to happen that the first barrel was experiencing. i soon corrected the problem with the first barrel by placing a larger main jet in the fuel stream. this caused all hesitation and misfiring to cease with that barrel only. the second was still having trouble, even though i placed a larger jet in it, too. a couple of weeks later, while looking into the carb durning function, i noticed that there is only one accelerator pump for both barrels that squirts fuel into each at the same time. the second barrel holds this fuel until it opens, at which point, it hesitates and fires through the carb. i seemed to have corrected this by removing the ability for it to deliver fuel to this barrel. it still hesitates, but it does not backfire anymore. i know that it is not a problem with the accelerator pump itself. it is delivering fuel to the carb.
last night, i had the choke stick closed on me. this may have shead some more light on the problem. while the choke was closed, the cruiser would accelerate without ANY problem. it ran great, until it was choked out... what i am now thinking is that this carb is too small and incorrect for this engine. it is not delivering the correct ammount of fuel that it needs to run properly. is there anyone out there that has had a similar problem with this carb? any advise is appreciated.
it all started with the engine running rough until it warmed up, and, even then, it would still hesitate and misfire through the carb. i found that the carburetor was tuned far too lean from the factory. i installed larger idle jets and worked with the choke. this half way fixed the problem. on a hunch, i forced the carb to drop more fuel by closing the choke off and making the engine run extremely ritch. this cured the problem of it firing through the carb, but, as you may or may not know, the 32/36 is a progressive. while it solved the problem on the first barel, it didn't on the second. the choke was open when the second was engaged casuing the exact same thing to happen that the first barrel was experiencing. i soon corrected the problem with the first barrel by placing a larger main jet in the fuel stream. this caused all hesitation and misfiring to cease with that barrel only. the second was still having trouble, even though i placed a larger jet in it, too. a couple of weeks later, while looking into the carb durning function, i noticed that there is only one accelerator pump for both barrels that squirts fuel into each at the same time. the second barrel holds this fuel until it opens, at which point, it hesitates and fires through the carb. i seemed to have corrected this by removing the ability for it to deliver fuel to this barrel. it still hesitates, but it does not backfire anymore. i know that it is not a problem with the accelerator pump itself. it is delivering fuel to the carb.
last night, i had the choke stick closed on me. this may have shead some more light on the problem. while the choke was closed, the cruiser would accelerate without ANY problem. it ran great, until it was choked out... what i am now thinking is that this carb is too small and incorrect for this engine. it is not delivering the correct ammount of fuel that it needs to run properly. is there anyone out there that has had a similar problem with this carb? any advise is appreciated.
