|Topic Review (Newest First)|
|08-17-2019 09:45 AM|
Check your compression. Adjust valves. Check plug gaps, and maybe replace plugs.
Did you carefully clean the pilot system in the carb--that pretty much controls fuel at idle.
Float height should make no difference at idle unless it is allowing fuel to overflow,
Use a propane torch and blow some propane around the engine side of the carb--if the engine speeds up then you have an air leak.
|08-11-2019 09:00 AM|
Originally Posted by Guba View Post
Originally Posted by flitecontrol View Post
|08-10-2019 08:58 AM|
|flitecontrol||Is the video taken after the engine warms up? If not, is the choke being used? If not, it isn't unusual for it to idle like that.|
|08-10-2019 08:28 AM|
|Guba||None of my Rebels idles smooth. However, after I adjusted the valves on my 2000, it now idles smoother and starts without choke.|
|08-10-2019 08:01 AM|
Help getting idle smoother
The 2005 Rebel 250 I bought recently was leaking fuel from the carb (float bowl) and the bike was idling a bit funny, so I took the carb off a while ago and finally got the parts yesterday. I cleaned everything and replaced the float bowl gasket as well as the float valve (just for good measure –*the old one might have been okay, but looked like it could be replaced...note: I bought a second market valve and compared it to the old one to be sure. Looks to be the exact size). I also replaced the air filter because it was dirty.
The good news is that the carb is no longer leaking! However, the idling issue has persisted and has perhaps worsened. I took a video so I could post it and see if anybody has any pointers:
Instead of being a smooth idle, it sounds a bit uneven. Also, it sounds like air is trying to be sucked somewhere, but I checked an old video I took before replacing and it sounded that way too, so maybe that is normal?
Anyway, a few thoughts I have:
- There is a slight amount of play in the throttle. Perhaps I should tighten it a bit so as to rev the engine just a hair?
- Alternatively, should I change the idle speed? (Perhaps the uneven idle is caused by the RPM being too low and that is normal?)
- Does it sound like the fuel/air balance needs to be adjusted? Perhaps it is taking in more air now with the new air filter, and it needs to be accounted for?
- Lastly, I suppose there is a chance that there is something weird about the float valve since it is not original?
Clearly, this is new to me and I am learning as I go. (And really enjoying it!) Thanks in advance, everybody, for the help!