Join Date: May 2013
Location: Left Coast, Canada
You just purchased the bike so you may not know much about how it's been looked after so I'll offer a couple of easy things to check.
- All battery power and grounding connections are clean and tight.
- Measure the battery voltage when the bike is off (12.6ish), idling(900-950)(13.5ish), and at 2500 rpm's (14.4ish).
- Make sure the air filter is clean.
- Check your throttle cables adjustments.
- Check all the vacuum lines. Dried or cracked ones will cause running problems. While it's running spray some starter fluid or carb cleaner between the heads and listen for changes in the rpms.
- Put in a suitable amount of injector cleaner at your next fuel fill and push it through with a good hi-rpm run on the highway. If the past owner had been using a discount gas station to save 30¢ or maybe let the ethanol fuel sit for awhile you could have a bit of sludge.
- Re-program the fuel controller.
If still a problem you could try re-establishing your base throttle points. Copied from another thread....
Key on, switch on, engine off
Slow 5 count rotate throttle from closed to wide open
Hold throttle wide open for slow 5 count
Let throttle SNAP shut/closed
Cycle kill switch (off then on)
Start it up and check it.
If there's still a problem you may have to have the TPS looked at and reset. I believe that requires a visit to a dealer that still has their Digital Wrench.
As a side note, pay some special attention to the way the bike is running while you're riding. You've only mentioned at idle but there's been more than a couple of threads here about problems in which it was eventually brought out that there were other problems. Sometimes you have to drag more information out of OP that turns out to be quite relevant.(and irritating)
Good luck and keep us updated.
Not all those who wander are lost.
Last edited by 53canuck; 09-23-2018 at 10:12 PM.