Re: Good jet size

Posted by Vintage on Apr 21, 2012; 2:37pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Good-jet-size-tp3927423p3928246.html

Racingrobby wrote

I have a 1980 cb750f with a kerker drag exhausts witch way too load and wanted to know what a good size jets to run . I just can't find a sweat spot there it idle right . I adjust the idle screw and it with be fine till it warms up than its idles to fast it goes up and down day to day. I have the fuel screws at 3 and half turns out . If anyone has had this prob and knows that to do let me know thanks

After your carbs are balanced and you make sure you have good plugs, if you continue to have the problem, my suggestion would be to try the next bigger size jet. If you changed the air box or installed aftermarket filters, i'd go with two size bigger jet.

Harry