Cough through carb.
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5th Gear
Joined: Jun 2012
Posts: 9
Likes: 0
From: florida
Cough through carb.
Hey guys
I need a little info. trying to adjust the carb on my 2002 low rider. I have screwed the mixture screw all the way in to seat,backed of two and a half turns seem to be a little better but not quite right.It coughs a little if i cruse at about 3000 rpm or less,but if i run up to about 3400 rpm or over it dont miss a beat.i was thinking the person who had it before me let it get a gunked up.Before i have it rebuilt is there a good additive to try and run through it?
What is the maximum turn's i should back off on the mixture screw,like i said i am at about 2 and a half now.
Thanks for any any info.
I need a little info. trying to adjust the carb on my 2002 low rider. I have screwed the mixture screw all the way in to seat,backed of two and a half turns seem to be a little better but not quite right.It coughs a little if i cruse at about 3000 rpm or less,but if i run up to about 3400 rpm or over it dont miss a beat.i was thinking the person who had it before me let it get a gunked up.Before i have it rebuilt is there a good additive to try and run through it?
What is the maximum turn's i should back off on the mixture screw,like i said i am at about 2 and a half now.
Thanks for any any info.
Road Warrior
Joined: Sep 2008
Posts: 1,465
Likes: 16
From: Nor Cal
I'm having the same problem on my '03. Misses/hesitates/coughs at 3000-3200 rpm. I ran three tanks with Sea Foam, and two tanks with Chevron Techron Concetrate added. Didn't make a difference. Plugs looked good. I didn't want to mess with the jetting, but looks like I have to. Did some research and it may be the needle jet. I bought the bike used and the seller was no help on the modifications done. Pipes and a Sreamin Eagle air cleaner have been added. What was the other tip you are going to try?
Last edited by DanDman; Jul 10, 2012 at 05:55 PM.
Cruiser
Joined: Apr 2012
Posts: 174
Likes: 0
From: Beaumont
You're running a little lean. I had the same problem and it turns out tr previous owner didn't do any adjustments to the carb when he added pipes. I went from a 45 to a 46 jet and it runs like a champ now.
Supporter
Joined: Jan 2007
Posts: 15,788
Likes: 5,621
From: along the shore of Mishigami
A lot of guys and some gals buy a previously owned bike where a stage one was done. Air cleaner and pipes. Then they take some where to get it tuned. The shop sells a Dyna-jet kit (quick $100) and install/tune. I've read a lot of threads where the dyna-jet wasn't all that good. Different jets, different needle, a softer diaphram spring and a larger hole in the vacuum piston slide. Some may have a good kit nstalled but more haven't.
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