Been on the road for past 3 1/2 days. Bike started surging pretty badly near end of day 2. Been getting progressively wise each day. Feels like fuel starvation.
Happening inconsistently, but this morning I got about an hour of no problems & then I had to pull off a few times & limp it for 5-10 minutes before she'd run ok for 1-2 minutes.
Worse at 4500-5000 rpm, better for abt 10 minutes @ 6000-7000 rpm.
It's not vapor lock.
The tech said the charcoal canister (CA model) looked fine, not wet.
Not the clutch switch.
Tech said side stand switch operating fine, side stand most of the way down before engine cut out.
Unfortunately I'm not @ a Kawi dealer, but with no check engine light, they don't think they'd get any codes anyway.
Your thoughts? What else can they check? Some heat sensor???
May have been a fuel issue. Bike ran great for last 3 hours. Not one hesitation. I fueled up at the gas station in Lassen nat'l park and my surging began about 30 minutes later. I filled up abt a half tank at a time for 4 or so last fill-ups.
Other things that changed were outside air temp was much cooler, although not blistering before, altitude went down to abt 1000 ft, or less, down from over 4000, speed was under 65 mph this last leg, but previously in the 65-75 range.
Who knows for sure, but it's clear I wasn't supposed to head up 97 to hood river/bridal veil falls.
I always try to find a Chevron or Shell station, and fuel with regular (which gets a lot of "turnover" vice mid-grade or premium). I stay away from off-brands. Given I'm only buying 3-4 gallons of gas, the risk isn't worth the savings.
Of course if you're on the Alcan, you take what you can find. :-)
Well the case is reopened. After 1 day of trouble free riding, the surging has returned.
Would it make any sense that my Garmin GPS draws too much power causing the stator to heat up leading to problems? I was reading something related to this in some of the burnt stator/ regulator/rectifier threads.
I'm thinking also that maybe the fuel filter is clogged. I'll hopefully be able to pull it in the next day or 2. I'm in the Puget sound area for the next week.
This may be a dumb question, but do fuel injected bikes have different jets like carbureted bikes do? When the surging happens it usually starts at about 4500-5000 rpm and will surge there but be fine above 6000 rpm. When it's at its worst, it will surge at all rpms and I need to pull of and the engine will die, but then I can pop the clutch and bump start her right away.
I put some fuel injector cleaner in and am about a half a tank through it. We'll see what that does...
The versys has no external in-line fuel filter. There is some sort of filter as an integral part of the very expensive fuel pump that is installed into the fuel tank... but how or if it can be cleaned I just don't know. Check the two links in my earlier post for more info in that regard. Good luck!
Have you checked to see if the fuel vent tube may be pinched????
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I'm not a Gynecologist. "But I'll Take A Look"
Everyone has a plan 'till they get punched in the mouth...
“The difference between genius and stupidity is that genius has its limits.” – Albert Einstein
I would look at the stick coils, they have been known to crack (requires removing the tank and air box, so maybe the shop didn't want to get that far into taking the bike apart when they were diagnosing the problem). Also check the wiring loom under the seat: the insulation may have rubbed through due to vibration causing an intermittent short (also a known problem).
I'll try and hit all the questions...
It's not vapor lock, I drove with cap open to rule that out. I think the gas tank venting is not the problem.
I'll check the air filter, and stick coils before pulling the fuel pump/filter. I'm near a Wal-Mart. I'll go get some wd40 & try cleaning some contacts. It's like she has a bad cough. Sometimes she hacks and hacks but then clears it out for a few miles before she starts up again..
Is this the crank case breather tube? I'm emptying it. I think it's common for there to be a need to empty it occasionally. At least that's the case on my old cb700.
What mileage are you at? What maintenance was done to it? Which grade and ethanol content of gasoline did you put in?
That's your airbox drain. Crankcase vent is right beside it in the airbox. That looks like a lot of engine oil in your airbox vent!? Is it in fact oil? Is your engine overfilled with oil? Your 2011's revised stick coils should be fine.
Just over 13,000 miles. Regular interval maintenance. Oil, filter, and checking fluids, cleaned air filter. Haven't inspected plugs or valve clearances, but neither of those are due for awhile if memory serves me. I've been keeping up with maintenance doing it myself.
87 octane gas, mostly 10% ethanol. I changed the oil before leaving and checked level. It looked fine. Level was checked the other day at the shop too. Looked fine. I checked with bike off stand leaned level. Yes, it seems to be oil in the tube. Didn't smell any gas in it.
What grade and type of oil was put in? Check air filter which may be soaked with engine oil. Replace spark plugs which are well overdue ASAP... You may then also check valve clearances and throttle body synch.