Need some help here i'm kind of stuck. I've been maintaing this bike for a friend since he bought it new in 2003. The bike is a 02 softail TC88 with a CV carb the bike is bone stock with no mods at all it has 22k on it. He let it sit for 5 months with no additives or stabil in it. The bike coughs thru the carb from idle to about 2500 rpm heres what ive done so far.
bike
1 pulled the plugs and inspected them very white and chalky so it very lean
2 Drained all the gas out of the bike flushed the tanks removed the petcock and filter cleaned both also blew out the fuel line.
3 Changed the plugs with new NGK iridiums. put in new gas and some seafoam started it up, no change still. pulled out the choke and it stopped coughing and idled nice as soon as it came off choke it started coughing again. Once again a lean condition.
4 Sprayed around the intake and did have a change in idle. changed intake and carb mounting gaskets put it all back together and no change.
5 Took the carb off the bike opened it up tore it down removed and cleaned all the jets and passages with a jet wire and compressed air, took out he slide inspected the diaphragm and used bronze wool on the slide to remove any possible burs inspected the needle valve and seat also checked the float height and checked the accelerator pump diaphragm condition and function put it all back together same thing still coughing.
6 sprayed the intake again no idle change this time now im thinking bad or sticking valve do a compression and leakdown test with the motor cold and hot. both cylinders passed 150 psi front and back no leakdown on either.
7 bought a complete rebuild kit and did the carb again no change again. Decided to try running it on the idle circuit only so i pulled the accelerator pump rod started the bike and it idled perfect:cry hook it back up and it's back to coughing again?????
8 forgot to mention i adjusted the idle mixture screw after the carbs been off each time.
I'm just about out of ideas at this point. ANY help would be awesome. Thanks
bike
1 pulled the plugs and inspected them very white and chalky so it very lean
2 Drained all the gas out of the bike flushed the tanks removed the petcock and filter cleaned both also blew out the fuel line.
3 Changed the plugs with new NGK iridiums. put in new gas and some seafoam started it up, no change still. pulled out the choke and it stopped coughing and idled nice as soon as it came off choke it started coughing again. Once again a lean condition.
4 Sprayed around the intake and did have a change in idle. changed intake and carb mounting gaskets put it all back together and no change.
5 Took the carb off the bike opened it up tore it down removed and cleaned all the jets and passages with a jet wire and compressed air, took out he slide inspected the diaphragm and used bronze wool on the slide to remove any possible burs inspected the needle valve and seat also checked the float height and checked the accelerator pump diaphragm condition and function put it all back together same thing still coughing.
6 sprayed the intake again no idle change this time now im thinking bad or sticking valve do a compression and leakdown test with the motor cold and hot. both cylinders passed 150 psi front and back no leakdown on either.
7 bought a complete rebuild kit and did the carb again no change again. Decided to try running it on the idle circuit only so i pulled the accelerator pump rod started the bike and it idled perfect:cry hook it back up and it's back to coughing again?????
8 forgot to mention i adjusted the idle mixture screw after the carbs been off each time.
I'm just about out of ideas at this point. ANY help would be awesome. Thanks
