Re: 2003 VTX 1800 C won't idle
+1 on the Fuel Pressure Regulator (FPR).
And it is the cheapest fix of all-only $28 from HDL. Like stu_o said check for gas in the vacuum line on the top of it. Or just spend $28 and swap it. Several 02 and 03 owners lately have been having problems lately with plugs fouling, bad idling, etc and spent $200-300 at the dealer to troubleshoot it.
Is it 5 o'clock yet?
2003 1800C, Roadburner 2.5 Street Pros, K&N Air filter, Barnett springs w/.075 shims, MC engine guard, tour rack, sissy bar, Memphis Shades Hellcat W/S