Sportster spits and sputters - Harley Forum

Magnum1950 · #1 04-11-2009, 08:58 PM

I just bought a 2005 XL1200C sportster. I took it directly to the dealer for a full service and tune up. The problem i have is that when the bikes gets warmed up,it spits and sputters and tries to die unless i keep the rev's up. The dealer has put on new mufflers and rejetted the carb and also installed new manifold gaskets and a new diaphram and carb slide.The bike idles great and the sputtering starts just off idle.The bike runs perfect at higher rpm's and accellerates fine............Any idea whats going on guys?

Magnum1950 · #2 04-12-2009, 12:54 AM

OK guys......I wasnt aware that this 05 sporty had built in diagnostics......I ran a diagnostics check and sure enough i got 2 error codes.......both of them for the crank position sensor.......looks like i may have solved my problem.......Oh ya.......and its only about $30 for the part.

evoKENevo · #3 04-12-2009, 01:02 AM

Welcome aboard,Magnum...good work and I hope you're squared away now.

BTW...gotta wonder why your "stealer" technican did'nt catch that one...before milking for all that other stuff...huh !?!

Magnum1950 · #4 04-12-2009, 01:05 AM

Thanks for the welcome.......I appreciate the forum being here for me and im sure someone would have pointed me in this direction. I look for to being here for a longgggg time.

Thanks
Jack

evoKENevo · #5 04-12-2009, 01:10 AM

Welcome anytime...come early,stay late

open 24/7 year 'round

unclepsycho · #6 04-12-2009, 01:11 AM

Welcome from Caifornia...

Glad you got it figured out!!!

Magnum1950 · #7 04-12-2009, 01:17 AM

Quote:

Originally Posted by evoKENevo

Welcome aboard,Magnum...good work and I hope you're squared away now.

BTW...gotta wonder why your "stealer" technican did'nt catch that one...before milking for all that other stuff...huh !?!

He's a custom bike builder and probably didnt know the sporty could check itself. I havent wasted and money on parts really and he hasnt charged me anything at all for labor. He's a good friend of mine.I work on his computers and he works on my bike.......we kinda swap out.

evoKENevo · #8 04-12-2009, 01:34 AM

My apology to your friend...saw your reference to "the dealer" a couple times in your original post and (uhhhh) conditioned reflex.....

Magnum1950 · #9 04-18-2009, 06:14 PM

I just replaced the ckp sensor and reset the error codes and took about a 20 mile ride to check it out..........Problem Fixed........Ive got a spare sensor in stock just in case i need it. Thanks to everyone here for all of the info and support.......This is a super great forum!

bud9351 · #10 07-08-2009, 06:30 PM

1999 Sportster 883 backfires, shuts down after a few miles (engine is warmed). Does this 2 or 3 times then is fine for the remainder of a 30 or so mile ride. Sits for a couple hours then the same scenario. Have had the bank angle sensor replaced (at an H-D dealer-their diagnosis) did the same thing after a day or two, took it back, they replaced a cracked vacuum line on the carburetor inlet, same scenario again a day later! I've heard it could be the ignition module (was told it was discussed on this forum awhile back) The bike is not mine, it belongs to my nephew, was storing it for him and rode it for a month. Has 30,000 miles on the odometer. Any ideas? dealer hasn't figured it out yet!
Thanks,
Bud R.