carbs sucking air

[schvezon]

I bought a 77 gs 750 on my birthday last month with the intention of doing necessary maintenance myself. I have been doing all the work but one thing has eluded me. I cannot seem to stop an increased sucking of air on the far right carb (brake side). I am concerned because I feel that this is causing accelerated wear on the corresponding header from being run to lean. I have upgraded the bike to a 4into1 vance and hines exhaust and will be rebuilding the carbs in the coming week which should alleviate some of the extra heat on the header. Here are my theories for the airflow though.

1. The carb just needs a rebuild anyways.
2. The intake boot is old and needs replacing.
3. The pod filters inner integrity has somehow been compromised. Squeezed or ripped or something.\
4. There is a crack in the intake manifold.

[Rudeman]

Have you replaced the carb boot O-rings?

[Larry D]

Welcome !!

Have you re-jetted the carbs for the pods ?

[SqDancerLynn1]

Make sure to replac e the O rings on the intake boots and examin them very close.. Depending on when exactly your 750 was made It may not have Orings. In that case the best solution is just to buy new boots. Or You could make gaskets to get you by for a while