Join Date: Nov 2014
Location: San Antonio, TX
Mentioned: 1 Post(s)
Quoted: 8 Post(s)
fuel pressure regulator and plugs
I think I have an FPR issue.
Bike is a low mile SP1. Ridden about once a month. Last month it had a hard time idling, and would die at idle. Ran fine otherwise. I turned the idle up a few turns and it was idling fine around 1300-1400.
On my ride yesterday. I had a most satisfying high speed blast to the top of 5th gear. About 3 minutes later bike started surging and farting. And would again die at idle. I turned around and limped home.
At a steady 4000 rpm, it seemed ok. It struggled to get there, but would maintain it.
Plugs are sooty deposit fuel fouled, not dripping wet.
Sounds like a pressure regulator?
Battery connections are good. Battery voltage is good. Fuel doesn't seem contaminated.
On plugs, can you use a non iridium? Found an in stock NGK that shows in the book. But it is a standard looking plug.
Last edited by Danoh1; 07-04-2015 at 04:00 PM.