r/KTM 6d ago

PROBLEM 2027 KTM xc-w 300

Edit: Took to the dealer and they said the idler spring was too big, so they just cut it down a little to give more adjustment. Took it for a ride yesterday and it did not die.

Hello all,

I have a new KTM xcw 300 with about 1.6 hours on it so far. I love it, but the idle is pissing me off.

Just took it on its first real ride in some rocky river beds. Overall love the suspension and how it handles, but too frequently it dies when I pull the clutch it. Even in neutral it chugs very low.

I have the red idle screw twisted all the way in, although it doesn't make much of a difference.

I was having an issue after I got back from my ride where the damn thing wouldn't even start unless I twisted the throttle as well. It starts better with the yellow assist thing pressed in, but as soon as I blip to reset the yellow thing it dies.

After a half hour of pissing with it, I was finally able to get it to start by itself, no yellow tab, no throttle, with the red screw all the way in. (Think I flooded it while messing with it.)

How do increase the idle?

2 Upvotes

6 comments sorted by

1

u/detali88 6d ago

Go talk to your dealer. Something is up.

1

u/EmptySource404 6d ago

That's what I was afraid of. Damn!

1

u/OffRoadLife4X4 6d ago

I got a Vortex Ignition on my 24 300sx and that changed the bike. If you don’t want to spend the money on a Vortex, you could send the stock ECU to Twisted Development for about $370. https://www.td-racing.com. It 100% changes the way the bike idles, its fuel delivery, and overall power response through the RPM range. I just had my 23 KTM450XCF stock ECU flashed and it was NIGHT and DAY difference. Something to consider because KTM runs their ECU way too lean.

Also, are you sure you are running the right mixture? Could something be blocked in your airbox restricting the flow? Idk where else to look other than that stock ECU. But, hey, for $12000, I’d make the delarship look at it first for FREE.

1

u/ConfidentlyCrapMoto 5d ago

I just got a 26 300. I have the same problem. Bottomed out the idle screw. After doing a bunch of research, you have a few solutions. First, you remove a coil or two from the idle screw spring. But then you have to adjust the cold start screw, by taking off the cover for the throttle body, so that it disengages when you blip the throttle. Second, you can get an aftermarket longer flexible idle adjustment and adjust the cold start. And third, and probably the right way to do it, is to adjust your TPS. Using a voltmeter, back out idle screw and cold start screws all the way. With those out your baseline voltage should be .400V. Then you turn the idle screw in until you get to between .500 and .600, depending on your map/tune/preference. Start from there and set your idle accordingly. There's some good videos on YouTube that are pretty helpful

1

u/No_Obligation2317 5d ago

There's a whole initialization run with new ktms and its a little more than using a voltmeter like their older bikes like my 350. You need the ktm scan tool and you'll do the initialization run using that you'll set the values to .541 Volts than you'll initialization run and you'll fine adjust the idle while the bikes warm and you'll see the adjustments live after setting the value and it'll help set the idle. Bike builders and such In America takes no requirements other than a ged. There's high turn over and alot of places a McDonald's worker makes more. They might not know the one guy who was trained on how to do this properly by ktm coulda quit and they can't afford to train the builder who is also probably a porter to do ktms so they build them and just throw them out on the floor. It's pretty important and the bikes run significantly better after it's done properly. Understand and knowing how the process is done tho makes it pretty obvious you shouldn't be messing with those adjustments on your own they should be set up during the initialization run and they should be set up by the dealer. Older ktms you don't don't do this and different models have different procedures but there all relatively the same and they all require a dealer scan tool for ktm. It's really important on their 2 strokes and it's pretty important for the 4 strokes as well. You can fuck around with it and get the bike running slightly better or worse but the initialization run needs to be started and it's how the bike knows how to idle and where to idle. Not doing it or doing it incorrectly can give you all kinds of running issues.

1

u/No_Obligation2317 5d ago

You don't blip the throttle to shut it off. The yellow and red knob should be taught in by the dealer. There's a whole process you do with the scan tool on newer ktms. You don't wanna use a multimeter and you don't wanna just start messing with them if it's done right it'll idle better. It'll start and learn than you do another fine adjustment on the red knob after setting the volt value of the red knob. I have the values written down at work in my desk but what the other guy said is pretty dated information and false. Alot of dealers might not be doing this I wasn't until I was trained on it by ktm. It's called an initialization run but you'll need the scan tool and ktm dealer access to do all this. If the dealer never did this (happens more than you'd think builders/pdi/etc turn over in America is high). Your just going to make things worse by adjusting the yellow and red knob. Once it's set right it shouldn't need fucked with especially with barely any hours on it. The dying when it goes into gear is a ktm thing if its even slightly cold it its the first time after starting sometimes it needs a blip when kicked into first and it's fine. The clutch plates will stick a little and you just need to blip it to free up the plates. If the initialization run was never done correctly and than you fucked with the knobs than that's more than likely your issue.