Check out the new Gallery
wicked red 1100
wicked red 1100
by mag10, August 21
Windshield I need to replace
Windshield I need to replace
by philwarner, May 10
first ride
first ride
by NemoJr, April 1
Steve McQueen inspired
Steve McQueen inspired
by Feral, November 28
GaRally22
GaRally22
by chy, September 18
Previous Thread
Next Thread
Print Thread
Figured out air problem, I think
#438335 04/08/2011 11:25 PM
Joined: Apr 2010
Posts: 103
Adjunct
OP Offline
Adjunct
Joined: Apr 2010
Posts: 103
In case you haven't been following along with my previous posts, here's what was going on:

2003 BA
Sceptre pipes
155 Main jets

When I bought it, it had the K&N FREAK air filters. On a very windy day, if the wind hit just right, the bike would get too much air and would die.

The place I bought the bike from put a factory air box back in. Worked, but ran rich and only got around 31 MPG no matter how I rode. When I took the snorkel out, if the wind hit just right, the bike would bog down; just like it did when it died with the FREAK (except, it wouldn't quite die).


Tonight, a man more learned and I took things apart and found the mixture screw on the right carb was out 2.333 turns. The left carb was out only 1.333 turns.

After much thinking, I had deduced it was probably the mixture being wrong.

We put the FREAK back on and fired her up. More air could be felt exiting the exhaust and the bike was noticeably louder than before.

The ride home sucked; rain, trying to beat the hail storm.

I had the bike up to a little over 95 MPH and it was still pulling hard. Before, the 95+ pull was a slow, labored one.

Popping on decel is almost completely gone.

I'm sure there will be a lot of tweeking involved to get it just right, but I think we're really close.

Re: Figured out air problem, I think
nikerret #438336 04/08/2011 11:35 PM
Joined: Aug 2010
Posts: 1,738
Learned Hand
Offline
Learned Hand
Joined: Aug 2010
Posts: 1,738
It sounds like you are on the right track now. Putting the standard airbox back on was the wrong way to go. Should run better with K&N filters.

Re: Figured out air problem, I think
nikerret #438337 04/09/2011 12:18 AM
Joined: Mar 2009
Posts: 12,964
Stickman Yogi
Offline
Stickman Yogi
Joined: Mar 2009
Posts: 12,964
Thanks for posting... we all stand to learn from each other.


Live to love, love to live.
Re: Figured out air problem, I think
Keith #438338 04/09/2011 8:04 AM
Joined: Apr 2007
Posts: 3,063
Likes: 8
Loquacious
Offline
Loquacious
Joined: Apr 2007
Posts: 3,063
Likes: 8
I'm suprised that the idle jet had so much effect on the high end. Really shouldn't but......

Glad things are working out for you. Keep us posted.


12 Rocket Roadster
03 Bonneville America
69 BSA Firebird Scrambler
73 Yamaha TX 750
Re: Figured out air problem, I think
Gregger #438339 04/09/2011 8:56 AM
Joined: Feb 2008
Posts: 2,671
Likes: 15
Loquacious
Offline
Loquacious
Joined: Feb 2008
Posts: 2,671
Likes: 15
"2.333" & "1.333" - really? You can measure to that precision?

Re: Figured out air problem, I think
B02S4 #438340 04/09/2011 10:59 AM
Joined: Apr 2011
Posts: 9
Complete Newb
Offline
Complete Newb
Joined: Apr 2011
Posts: 9
He's a robot.


Moderated by  bennybmn, chy, mert 

Link Copied to Clipboard
Powered by UBB.threads™ PHP Forum Software 7.7.4