July 26, 2011 1:15 AM PDT
Ok, here goes....'72 Sporster with an S&S carb. Got the bike running after sitting for 20 yrs. Cleaned the carb. Was running strong, but now it seems to be blowing fuel out of the intake and wanting to cough and sputter. Is it the carb, or do I have more serious problems with the bike? Ideas?
July 26, 2011 2:12 AM PDT
I had a similar problem on my 73 bonnie when I first got it. The problem was too much back pressure from the exhaust. Removed the mufflers and it ran fine. Final fix was new carbs and exhaust.
July 26, 2011 3:20 AM PDT
Agree with Mike that back pressure may be causing it.
Is it the same exhaust that has been on the bike while not running for 20 years? I imagine you wouldn't have to run that too long before all the rust and debris almost completely plugged it up.
July 26, 2011 4:00 AM PDT
Thanks guys...change the pipes and the carb. ....if I'm reading you correctly!
July 26, 2011 8:23 AM PDT
I would try the exhaust first.
October 11, 2011 2:14 PM PDT
Hey Mac, you ever get that thing up and kicking?
