So I'm attempting "stage 1" by myself. Bike has S&S 509 cams, fuel Moto air cleaner and hooker tuned flow pipes. On the cams, pipes, and stock air cleaner there was a 48 idle, 185 main and the mixture screw was already drilled, and it was about 8 turns out. I replaced the mixture screw with a thumb screw and replaced the main with a 190.

I'm starting with the mixture about 2 turns out. The bike starts with the choke, runs and idles ok. But as soon as I give it any kind of throttle it dies and a few puffs of black smoke come out the pipes.

Thoughts?

 

vacuum petcock leaking to the manifold?
someone forget the spring on top of the diaphragm?
main jet fell out?
the little piece above the emulsion tube in correct?
enricher cable and valve closing all the way?
cam timing correct?

Being it idles ok, just shooting from the hip.

 

Vacuum hose is secure to the carb.
Spring works, I tested the slide and it springs back down.
Not sure about the main falling out, I'd have to open it and check.
Enricher opens and closes smoothly.
I'm assuming cam timing is correct, as it ran fine before.

The only reason I messed with it was to put the fuel Moto air cleaner on, as it had a stock one before. And to clean the carb.

 

Also, after about 5 rounds of it starting, running for a bit, and then dying the battery died. I left it alone for a while on the battery tender and then attempted 1 more try. Now it starts, but makes a rapping noise while idling.

Did I cook the starter, or something much worse (and expensive).

 

Couldn't hurt to rebuild the carb. 46 pilot and 185 main should do. Give cv performance a call and get one of their replacement needles while yer at it.

 

I have a 46/195 in mine, the 48 was too much.

 

I get my ear closer to the carb and it sounds like it's sucking air from somewhere when I give it gas, right before it dies. I'll have to pull it and see I guess.