I need a little help... I ride a 2003 custom 1200XL that has about 7500 mi on it. Three weeks ago it started to have problems. After a cold start, about 5 miles out, it back fires then about a mile later stalls. The stall feels like a varor lock. I cannot start it right after the stall but If I wait for 10 - 15 minutes it starts right up and I won't have a problem for the rest of the ride (well not yet). any thoughts on the cause / fix??
back fires and vapor lock?
- Thread starter dick fitz
- Start date
How long do you let the scoot warm-up before taking out,do you ride it every day,have you had any work done on it lately,fuel octane???????
I warm it up for about 2 miles ~5min. I ride 1 - 2 times a week. the strange thing is after the stall it runs fine. I have noticed a little oil around the carb that could be a problem but I don't understand the stall.
No hiss when I remove the cap. The last two times I went out I kept the cap loose to see if that would help... same problem.
No hiss when I remove the cap. The last two times I went out I kept the cap loose to see if that would help... same problem.
have you had any mods. done?? How far of a ride do you do the 1-2 X's a week?
Try this just on a chance. Open this screw about 1 1/2 turns with the petcock open and let a few ounces of fuel flow out then close it again. Repeat it a few times.
Look through from the opposite side of the carb and you should see this screw assuming that it's a carbed bike.
Look through from the opposite side of the carb and you should see this screw assuming that it's a carbed bike.
R. Lewis, I run 93 octane.
No modifications on the bike... Thats the wierd part. When I ride I'll go 50 - 100 mi. after the inititial stall it runs fine for the rest of the ride.
Hobbit, Last time I rode I loosened the gas cap, real loose it rattled but did not let the gas spill. same problem backfire / stall. 10 - 15 minutes later started it up like nothing was wrong and had no problems for the rest of the ride.
Glider, I do have a carb. I'll try your suggestion and let you know what happens.
No modifications on the bike... Thats the wierd part. When I ride I'll go 50 - 100 mi. after the inititial stall it runs fine for the rest of the ride.
Hobbit, Last time I rode I loosened the gas cap, real loose it rattled but did not let the gas spill. same problem backfire / stall. 10 - 15 minutes later started it up like nothing was wrong and had no problems for the rest of the ride.
Glider, I do have a carb. I'll try your suggestion and let you know what happens.
Group, thanks for the suggestions... Last weekend I took Jaystronghawk suggestion and pulled the CPS (Crank Position Sensor). the 2003 has a cam shaft... same thing different name. This computer stuff will drive you nuts. anyway, before I pulled the CPS I disconnected the batery cables, as instructed in the manuel, and found that one of the small cables (blue) was disconnected. The CPS looked fine, the area was clean end all of the screws / bolts were tight so I put the thing back together (making sure all of the cables were connected to the battery and went out...
Three rides so far and no backfires or stalls. If this happens to you, do the simple stuff first
check the battery connections
Check your filters
Make sure your petco** (sounds like my wifes nickname for me) vent hose is not crimped
pay attention to your gascap vent
If all fails bring it to the dealer to see "if it's throwing codes" (I hate this computer stuff)
Three rides so far and no backfires or stalls. If this happens to you, do the simple stuff first
check the battery connections
Check your filters
Make sure your petco** (sounds like my wifes nickname for me) vent hose is not crimped
pay attention to your gascap vent
If all fails bring it to the dealer to see "if it's throwing codes" (I hate this computer stuff)