Am i rich or lean

[Bansheeman1121]

I recently added 30mm carbs and just changed the pilot jets not the mains, so when you give her gas it spits and sputters until you really get on it, and when you let off the gas lets say for a stop sign you gotta keep on the throttle or it will die any suggestions??

[SICK BOY]

Sounds like the pilot circuit is a tad rich.Have you done a plug chop yet?What does the plug look like when you take it out wet,black?

Edited November 14, 2004 by SICK BOY

[Banchetta]

Spit and sputtering is a sign of richness, if you have to keep revving it out to clean it out at an idle, then your pilot is wwaaaay too rich. I'd drop 3 sizes and go from there. What size pilots do you have? Mods?

[sredish]

What Banchetta said is 99.9% right on. I just wanted to add the stupid little thought that came into my head about a dirty airfilter. You have cleaned the filter recently, right? If you haven't here lately and it's dirty, it can do that.

 

But, like I said, that is probably not what's going on given what you said, just something to think about.

[FIRST BANSHEE]

rich, i'd say your pilots are big,does it clean up and run good on top.

[Bansheeman1121]

rich, i'd say your pilots are big,does it clean up and run good on top.

281536[/snapback]

Thanx guys im gonna do some jetting work on her tomarow, at idle if you let it idle for to long then start revvin it smoke purs out and after a few stabs of ythe throttle starts to clear up and eventuly gets on the pipes pretty easy, but the plugs look ok not way to rich there almost what id like to call a nice tan color so im gonna have to look into this more tomarow

[Banchetta]

Tan plugs is a sign of leanness, but be careful you can be rich on the pilots, but lean on the needles or mains, so you have to get all three dialed in. The pilots control the idle/off idle circuit, the needles control 1/4 to 3/4 throttle range, and the mains control wide open throttle range (wot), you want to run your shee wot in 6th gear for 5-10 seconds, coast to a stop, pull the plugs. You want a dark brown color on the strap of the plugs, this is ONLY for adjusting the mains. Adjust the needle w/ the seat of the pants feel, it'll either like it or hate, no inbetween. You can benefit great power gains w/ the needle height, so don't ignore it. Good luck and let us know what you end up w/.

[Bansheeman1121]

Tan plugs is a sign of leanness, but be careful you can be rich on the pilots, but lean on the needles or mains, so you have to get all three dialed in. The pilots control the idle/off idle circuit, the needles control 1/4 to 3/4 throttle range, and the mains control wide open throttle range (wot), you want to run your shee wot in 6th gear for 5-10 seconds, coast to a stop, pull the plugs. You want a dark brown color on the strap of the plugs, this is ONLY for adjusting the mains. Adjust the needle w/ the seat of the pants feel, it'll either like it or hate, no inbetween. You can benefit great power gains w/ the needle height, so don't ignore it. Good luck and let us know what you end up w/.

281835[/snapback]

Hmm kinda scared me on that post, i changed my mains but you definatly sound like you no exactly what your talking about so im in a jam, there was 280s in the carbs i have no idea how to check the pilots or for that matter what sizes my pilots are i went to 250s on the mains but like i said the plugs didnt look as rich as it seems to be runnin, so like u said off idle is where is actin up so i guess i gotta go look into pilot jets??

[sredish]

Here's what affects what. If it's off idle, then you don't need to mess with the main, it's somewhere else.

[Banchetta]

Did you do a plug test after a wot run in 6th gear before you changed the mains?? Don't just lean the mains because you think its rich. Adjust the mains to the plug color ONLY after a wot run.....Jetting isn't that hard, just time consuming. Spend a whole day at it, and you'll be happy every ride after.