Intake question

[Pureformance]

that's one thing I haven't replaced yet. I haven't had the bike long, just been tryin to go down a to do list of things to replace. ill do that next,
and thanks for the tuning tip!

[Dave8338]

We'll get it.

[Pureformance]

thanks again for the help.

[Steve]

ok, I had backed the screws out 1 1/2 so ill back them out a bit more.

Turn them IN please.

Out is leaner (think more AIR, not fuel.) Those screws meter air, into the system.

Not so, Dave, he has an '81, therefore CV carbs.

The screws are MIXTURE adjustment screws. Turn them IN until they seat lightly, then turn them out THREE full turns.
This will likely be a bit rich, but will definitely allow the bike to start. Once the bike is running and warmed up, turn each screw in slowly, listening for highest engine speed, which indicates best mixture.

.

[Dave8338]

Alright then...turn them in and then turn them out.

Turn them upside down, if you like. Carbs, ya gotta luv em!

Thanks, Steve. Misinformation is worse than NO info at all.

[Pureformance]

hah ok ill go give that a try. I readjusted the throttle cable which seemed to help. I had just put a in line fuel filter in after cleaning the carbs, read up on that and i dont really need it, so thats gone. Started up immediately today with no choke, prime or anything. The throttle response is much better, but rpms are still hanging. Ill go try to readjust the pilot screw now. Also ordered a new air filter.

[Pureformance]

Ok so i turned them all out the 3 full turns and hanging idle solved! Thing started right up sounded great. Took it for a ride and it is sputtering when i try to give it much gas. So ill tweak the mixture some more like you suggested and go from there.

[Pureformance]

well I haven't had a ton of time to tweak mixture on my bike. I set it to 2 1/2 turns out today and noticed the idle seemed to raise so I took it for a spin. still seems to sputter at certain points in the throttle. I didn't check the float levels on the carbs when I cleaned them, would that be a good place to start if adjusting the mixture screws doesn't correct the problem? if so, will this be adequate in getting the job done? www.summitracing.com/parts/PTM-PP2699

[Pureformance]

come to think of it, the other day I accidentally left the petcock on pri for maybe 15 minutes. came back out realized it after I saw some gas dripping from one of the carbs, would this indicate incorrect float level or possibly bad petcock?

[hikermikem]

come to think of it, the other day I accidentally left the petcock on pri for maybe 15 minutes. came back out realized it after I saw some gas dripping from one of the carbs, would this indicate incorrect float level or possibly bad petcock?

Maybe, but most likely the fuel just leaked past the float needle valves... common issue. That's why you shouldn't leave the petcock on PRI (gravity feed).

The worst that can happen is the fuel will overflow into the crankcase & then you have to change the oil & filter before running the engine, or bad things will happen. However, I doubt that occured in 15 min. Unscrew the oil filler cap & give it a good sniff - if it smells strongly of gas (or it looks overfull) then change the oil out.

[hikermikem]

Ok so i turned them all out the 3 full turns and hanging idle solved! Thing started right up sounded great. Took it for a ride and it is sputtering when i try to give it much gas. So ill tweak the mixture some more like you suggested and go from there.

Time to synch the carbs - then fine tune the mixture screws.

[Pureformance]

Ok thanks for the advice. Ill check the oil too. Time to give my wife a surprise shopping day and THEN drop the 100 on the carbtune.

[Pureformance]

Im wondering where i can find a new OEM filter to match these?

[Pureformance]

Also, i think i know why it has been sputtering. I pulled each plug wire: #1,3,4 almost dies. #2. shocks me and no change in idle. Can i just get a new boot for it?
EDIT: ordered 4 new boots.

[sedelen]

Im wondering where i can find a new OEM filter to match these?

What a unique innovation! I would say "Bubba" did a great job at fabricating those, and notice just how clean he kept them. Kinda resembles the holely molely one that came with mine, but mine was dirty.