Topic: 1978 cb550k carb question

[Rdkng]

I was rebuilding my carbs when I noticed that my slow jet was a 42 instead of the stock 38 as stated in the service manual.  My question is will this be a problem?  Everything else is stock.  The reason I was working on the carbs was that the bike will not stay at a steady idle it seams to go from stumbling to racing. Any information would be welcome. Thanks

[OldSchool_IsCool]

#42 is correct for a '78

http://forums.sohc4.net/index.php?action=dlattach;topic=5410.0;attach=3002;image

[Rdkng]

Thanks .  I am new at this and it looks like I bought a bike with very little information on it.  Do you know what would cause the idle to go from slow to fast all the time?

[Johnny5]

Air leak? Bad timing? Carbs out of sync?

[texaninseattle]

I have the same bike (year and model) and my idle was crazy until I sync'ed the carbs