Question about Suzuki GSX 750 Motorcycles

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I have a gsx 750 et chop with k&n filters and am having probs with tuning the carbs. the jets should be 135's for the carbs but it was choking when revved. i changed them to 138's and it was revving perfect but i think the mixture is too rich cos the plugs are black. i am having problems tuning it and am getting really fed up...any suggestions or advice?

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  • Steve Brown
    Steve Brown May 11, 2010

    can you get like 137 or 136 jets. your 138's are probably to big.


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If you are trying to run pod filters, give it up and put the factory airbox back on. The Kats don't run well with the pods. If you are running a K&N replacement filter in the stock box, another 1/2-3/4 turn out on the A/F screw will do the trick with factory jets.

Posted on Jul 22, 2009

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