Hey guys!

Sorry for the newb question and I'm sure this has already been answered somewhere.

I have an 89 fxrs undergoing some weird behavior. Starting is fine, low throttle is fine, >50% and it bogs and feels like I'm running on one cylinder. That being said I've only had the bike about a year and there's plenty of TLC needed. Any idea where to start? I obviously want to keeplay cost as low as possible but this is my daily driver so regardless I need it up and functioning peoperly.

Thank you in advance for any insight you guys can provide!

 

Remove carb and give it a good cleaning. Check all components and jets. Look for dried out rubber seals, seats, orings, worn parts, and plugged jets and bleed holes. YD

 

1st, change the plugs as it sounds like you have a fouled plug. Next figure out why it fouled, was it oil or fuel? If it is fuel, is it because the air filter is dirty? If you have clean plugs and a clean filter and it still bogs down you need to change your main jet.

Basically - all the fuel 1st goes through the main jet and at idle is diverted through the idle circuit. When you begin to open the throttle you transition from the idle circuit to the main jet. If you are bogging down it is usually an indication of too much fuel unless you are running out of fuel. For me when the fuel is too rich, the motor acts like the choke is still on and you get black soot on the plugs. Sometimes in very rich conditions you get a backfire out the exhaust when a fouled plug clears. If the main is too lean the motor will usually act cold natured and sneeze through the air cleaner making you think you need to choke it.