- Joined
- Mar 1, 2003
- Messages
- 13,454
- Reaction score
- 18
- First Name
- Jack
- Last Name
- Giesecke
So, my bike started idling rough. I ran the idle up on it and got it home fine, surging down the road off throttle was irritating. I'd had to switch to reserve and thought I'd probably sucked detritus off the bottom of the tank that got into my idle jet, what it felt like.
I got it out yesterday to mess with it and found the petcock dripping. I could start it up and the drip would stop. I could shut the petcock off manually and the drip would stop. Conclusion, figure the diaphragm on the vacuum shut off is probably torn or got a pen hole in it. This would explain the rough idle, too, not too LEAN but too rich, sucking gas from the torn diaphragm. I didn't mess with it any further, pull the diaphragm for inspection or anything.
I got on bike bandit (appropriately named) and the diaphram was 20 bucks, the petcock was 90. Then I googled, came up with a manual petcock, no vacuum shut off, for 6 bucks. NO SHIPPING either. I ordered it. I'll plug the vacuum hose off the manifold with a screw or something. If that don't fix the problem, pretty sure it will, I've only dumped 6 bucks. I'll take the petcock apart after replacing it with the manual one to confirm thanks and keep it, perhaps install a diaphragm in it at some point, but frankly, I think I prefer the manual shut off petcock. Less to go wrong, the KISS principle.
I got it out yesterday to mess with it and found the petcock dripping. I could start it up and the drip would stop. I could shut the petcock off manually and the drip would stop. Conclusion, figure the diaphragm on the vacuum shut off is probably torn or got a pen hole in it. This would explain the rough idle, too, not too LEAN but too rich, sucking gas from the torn diaphragm. I didn't mess with it any further, pull the diaphragm for inspection or anything.
I got on bike bandit (appropriately named) and the diaphram was 20 bucks, the petcock was 90. Then I googled, came up with a manual petcock, no vacuum shut off, for 6 bucks. NO SHIPPING either. I ordered it. I'll plug the vacuum hose off the manifold with a screw or something. If that don't fix the problem, pretty sure it will, I've only dumped 6 bucks. I'll take the petcock apart after replacing it with the manual one to confirm thanks and keep it, perhaps install a diaphragm in it at some point, but frankly, I think I prefer the manual shut off petcock. Less to go wrong, the KISS principle.