Carburetor Cleaning & Tuning 101
#61
#63
Carb Vaccum Measurement
Hi, guys.
well, i read this excellent thread but i have 2 questions, maybe simple to the most people but i'm a cbr rookie.
1st.- Which is the order that i need to follow to have the same level between carbs?
2nd.- when the bike starts to make the carbs balance, which is the correct level?, i know this, we can only have from 0 to -1 bar, but if i have my carbs unbalanced, which is the best point to start to make a good balance.
i see the hurricane CBR thread and that guy show a carbtune and the levels are in cmHg from 8 to 40cmHg, and he balance all carbs to 22 cmHg, anybody knows if 22 cmHg are the setpoint?
thanks for your help!!
well, i read this excellent thread but i have 2 questions, maybe simple to the most people but i'm a cbr rookie.
1st.- Which is the order that i need to follow to have the same level between carbs?
2nd.- when the bike starts to make the carbs balance, which is the correct level?, i know this, we can only have from 0 to -1 bar, but if i have my carbs unbalanced, which is the best point to start to make a good balance.
i see the hurricane CBR thread and that guy show a carbtune and the levels are in cmHg from 8 to 40cmHg, and he balance all carbs to 22 cmHg, anybody knows if 22 cmHg are the setpoint?
thanks for your help!!
#64
1 - It's in the service manual. FOLLOW ALL STEPS EXACTLY.
2 - This is an invalid question. The idea is not to attain a specific level, but to have all levels the same for each cylinder. As everyone's bike is slightly different, everyone's levels will be different. Read the service manual, and you will see that you are "balancing" the levels to each other, not trying to get them "up" to something.
2 - This is an invalid question. The idea is not to attain a specific level, but to have all levels the same for each cylinder. As everyone's bike is slightly different, everyone's levels will be different. Read the service manual, and you will see that you are "balancing" the levels to each other, not trying to get them "up" to something.
#65
1 - It's in the service manual. FOLLOW ALL STEPS EXACTLY.
2 - This is an invalid question. The idea is not to attain a specific level, but to have all levels the same for each cylinder. As everyone's bike is slightly different, everyone's levels will be different. Read the service manual, and you will see that you are "balancing" the levels to each other, not trying to get them "up" to something.
2 - This is an invalid question. The idea is not to attain a specific level, but to have all levels the same for each cylinder. As everyone's bike is slightly different, everyone's levels will be different. Read the service manual, and you will see that you are "balancing" the levels to each other, not trying to get them "up" to something.
Got it, thanks for your time.
First round is mine
Cheers!!
#67
Out of sync carbs can cause ALL sorts of problems. That's why a carb cleaning is always the first thing that's reccomended with goofy engines.
#68
thanks for reply john reason i am asking is i have cleaned carbs on my 1989 1000f because had a flat spot at about 7000rpm but on stripping carbs they were very clean, when i rev bike on stand it hesitates at 7000rpm but if i pull choke back and rev it it revs past 7000 rpm allright ,its had new plugs ,air filter and oil change etc.only thing i can think of was balance carbs.petcock is fine to.any suggestions appreciated.
#69
thanks for reply john reason i am asking is i have cleaned carbs on my 1989 1000f because had a flat spot at about 7000rpm but on stripping carbs they were very clean, when i rev bike on stand it hesitates at 7000rpm but if i pull choke back and rev it it revs past 7000 rpm allright ,its had new plugs ,air filter and oil change etc.only thing i can think of was balance carbs.petcock is fine to.any suggestions appreciated.
#70