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Aro6559
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96 Posts
Discussion Starter #1
Hello all! So i have found the reason why my front cylinder is running so rich!! I took my K/N pod of my front cylinder carb and noticed that while at idle there are 3 small venturis where the air goes into the carb and the middle one is leaking horribly into the air flow, also the area where the needle sits is leaking fuel too!! I have included a pic of my visual inspection..can anyone tell me why my carb is flooding from those leaking areas? The rear carb does not do this and runs good the front is the only one having the flooding issue and leaks in that area..

I also would like to know what my jet size should be for California "sea level", my mods are K/N Pods, Vance and Hines Dual Exhaust, and all emssions removed air system blocked as well.. Currently I have 1 shim on both carbs needles, 142 main jets, 40 pilot jets...Is my jet sizing off for my modifications and sea level atmospheric pressure?

Please see pic attatched, any suggestions will be considered...
 

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1986 VN750
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3,255 Posts
I run 40/142/2 shims @ CA sea level, runs fine (when my other issues aren't messing with it hahah)
 

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1986 VN750
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3,255 Posts

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Aro6559
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96 Posts
Discussion Starter #5
Would you happen to know why my carbs is leaking fuel feom that middle hole, and why is fuel leaking at the diaghrams needle in the middle?
 

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1986 VN750
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3,255 Posts
Not sure as I don't know the carbs that well. Could be a sticky float?
 

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Registered
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8,300 Posts
Check the vacuum line off the front carb, the petcock can leak gas into the vac line, which pulls the gas into that carb. Inside of the line should be dry after you've run the engine and shut down.


Otherwise, it sounds like the carb is overfilling, due to stuck float or float set too high.
 

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FREEBIRDS MC CENTRAL NY
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16,242 Posts
Sounds like sticky float syndrome. But don't worry,Wolfie taught us how to blow properly.look up Wolfie's blowback method.it's been made sticky,uh,er, made a sticky in the carb section.if that don't work you might be playing with your carbutriators (sic)yes, very.
 

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Aro6559
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96 Posts
Discussion Starter #9
Ok ill check everything everyone mentioned..however i do have a new petcock already on the bike so im hoping its not petcock related..ill do the float test tonight..
 
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