new head and pipe, now 1 cylinder lean and one rich.

[msinawsk]

like the title says, since the new protec head and pipe, changed the springs to what pro tec said, and now have the front cylinder rich and the rear lean.

on the throttle, the low end seems a little dirty but the top end is kicking with power.

anyone have any input on this?

 

[Marcgraham27]

Im currently having the same problem with my protec, Some one told me to check the intake gastkets to make sure your not sucking air on one cyl.

 

[msinawsk]

pulled the carbs, the base gasket looks fine. didnt get any further on this.

 

[kevbo]

Do you have two carbs? If so tune each cylinder individually. It is unusual for both cylinders to have the same mixture requirements. Never expect both cylinders to run the same just because the carbs are.

 

[msinawsk]

i was told in the past this was a no no ... that both carbs had to be setup the same... so it is ok to setup one carb more rich than the other?

fyi, running stock 38's

 

[tor*p*do]

yes, some duals come with staggered jetting from the factory
real cylinder almost always needs more fuel & bigger jets

 

[msinawsk]

you guys gave me the courage to get into this...lol.. always been afraid to mix match settings on the carbs...this weekend i tweaked them differently and viola, the burble is gone and now i have a smooth power band.

thanks everyone!

 

[Big Kahuna]

adjustment screws are there to fine tune each carb. you may have to make one richer than the other for proper tuning.