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Discussion in 'Thumpers' started by crankshaft, Sep 6, 2011.
gentle use my arse! You can swoon at my evo 2 kit once fitted
Yep, that made absolutely no difference at all.
Good news is the issue is predictable and repeatable. Now just to wonder why.
Ran 15 minute idle test - puuuurrrrfect. Cut it off, put on the helmet start and stall. When temps hit 3/4, choke and puke.
Here's what happens
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This never happened to me on my bike until I replaced the intake roller rocker, and shimmed the intake valves on the tight end of the spectrum (Like, right at .07mm). After this, it happened several times. I only thought of the intake because of the recent work done, so I reshimmed the valves on the loose end of the spectrum, and vuala...
My thought on this is that at temperature, the valve clearance is so minimal, that at certain circumstances, the combustion of the engine happens while there is still a slight opening in the intake valves, and the energy follows the path of least resistance and blows off the throttle body. Just my theory...
But, it might be worth a shot to take a measurement of your intake valves. Mine hasn't happened once since my "fix."
I had a similar issue a few moths ago, except mine showed a TPS error. Turned out to be a bad regulator/rectifier. Check the voltage at the battery and monitor while the bike is running. If you see a voltage spike above 14.4 volts it could be the RR. What happends is that the high voltage spike from the RR confuses the ECU via one of the sensors. In my case it affected the crank position sensor which artificially advanced the ignition timing causing the ECU to move the throttle body stepper motor resulting the the TPS sensor error..
My voltage spikes were above 15V but only for less than a second. Cycling the ignition ket seems to reset the issue until it occured again. I switched to a MOSFET RR and runs great now.
Thanks for the reply! I think I found the issue. It appears to be a bad connection inside the wiring harness ECU connector. I can make the problem go away and re-occur by futzing with the wire right at the connector. Anybody knows who manufactures these plugs for KTM?
I my 690.
Ha. Yeah. I bought a V-Strom 1000, and it has a ridiculous lean surge (EPA mandated, have to add a PowerCommander to make it run right), and an un-believable clutch chudder at low-to-mid RPM. Makes me wish I'd bought a Wee.
You're mostly right, however I didn't come her to "slag" the bike, I loved my 690 when I got it in 2009.
My opinion is given after 4 years of ownership. feel free to cut down any bike you've owned, I wont say anything about your opinion, provided you do it in the correct forum.
I sincerely hope your bike holds up, but after 6 years in production and a lot of the core issues with this bike have not been fixed by the factory, I call that shitting the bed for sure.
It can be a sweet bike, I was just voicing my frustration of another part fixed to have something else die.
I wish I could say with proper maintenance that there are no issues, but I change my oil religiously and my valves had just been checked when I went on a 5400km trip this summer to have the top end blow and leave me stranded on the side of the highway.
Who knows, maybe I got a Monday morning special.
look forward to it mate
Let me send some emails. I think i'll have an answer for you this afternoon.
Same here. Had an '03 1000, and aside from the chudder, idle hammer, and lean surge it was a good ride. PC fixed the surge. SV1000 clutch fixed the chudder, and I just leared to live with the idle hammer. Oh, yeah... SV calipers, and master cylinder got the brakes working right.... Now I have a 2012 DL650A, and LOVE it!! Not as 2nd gear wheelie happy as the Vee, but I'm showing high 50's for mpg's so far. EVERY bike has something that needs fixing... The 690 has maybe more than most, but it's by far one of the best all around bikes I've owned.
Mine did it too. 2012. I think it was because I was being impatient, and blipping the throttle to quickly while starting. I have been sure to keep my hand off the throttle when starting since, and have not had a repaeat...
I shaved some of the neoprene from the seal saver where it lined up with the ring on the forks. seemed to work pretty well.
With all the talk about it, do you think the reg/rect is overheating? I haven't looked at it but if it's a part that's easily swapped you can borrow mine to see if it fixes the problem.
Uhhh not so much, grenaded my Vstrom motor at 46K miles.
Is at 3/4 temp also where your fan kicks in? If so, check if unplugging the fan sensor has an effect.
After it stalls does it re-start? If not, do you hear the fuel pump prime sequence? If you don't hear it, I would suggest replacing the fuel pump. Your problem sounds similar to problems described in this FI thread. I replaced mine with the CA Cycleworks FP-HUS. Problem fixed. Many other 690 owners have reported good results with this pump and it is much cheaper than the OEM KTM pump.
Unplugging the fan sensor will not allow the fan to come on at all. Its a simple thermo switch, only 2 wires.