Bottom end miss and sputter.

[maskmanLS6]

Ive got a slight miss that sounds like a rich sputter when i start to push the throttle off the bottom. It starts just as it transitions from pilot to needle, im thinking its either the needle is in too high of a position or my pilots are too big. Im running small needles in the middle clip and size 30 pilots. Any suggestions are welcome. Thanks

[erickson483]

You're gonna need to list your mods, elevation, etc

[maskmanLS6]

My mods are listed here. Aggressive dune port job, .040 overbore , FMF gold series exhaust , K&N filters and stock carbs with 340 mains and 30 pilots. I have the timing set at +4 running 93 pump gas, and im on the coast at sea level.

[nmdesertbansheeryder]

I also have pretty close to the same problem with my shee....it misses just before coming on the pipe...have pretty much the same mods.plugs look pretty good and are.new.runs great on the very bottom end and great on the pipe

[maskmanLS6]

I also have pretty close to the same problem with my shee....it misses just before coming on the pipe...have pretty much the same mods.plugs look pretty good and are.new.runs great on the very bottom end and great on the pipe

 

I tried some different things today and got the miss and sputtering out at last. I went all the way around the cure before finally lowering the needles one clip position and leaning the air screws 1/2 turn. All is good now, it transitions from idle to mid range and to the power without any missing or cutting out.

[nmdesertbansheeryder]

thanks for the help....will try these adjustments this weekend,the miss is driving me crazy.will let you know if they help

[maskmanLS6]

thanks for the help....will try these adjustments this weekend,the miss is driving me crazy.will let you know if they help

 

cool,,good luck