2021 KTM 350 Fuel injector cleaning & replacement

[@tieoneon1614]

I just had to do that also on a brand new 2021 EFI 250. Screen in fuel pump was plugged, injector plugged. I was getting a blast of fuel/power at low rpm's and sputtering at high rpm. I hot wired my injector open with a 9v battery, then sprayed it with carb cleaner. Made it run a lot better but Im still buying a new fuel filter and injector since they are cheap. They had shitty gas on testing the engine from factory, and it sat in there on shipping.

[@kcoutside7143]

I had to put an injector in my ‘17 350 also after a few hours. You nailed it with factory test run gas screwing them up!

[@calvinmacardy5655]

Just smashed the sensor plug off my fuel injector riding singles, thanks for the vid!

[@kcoutside7143]

Thanks for watching! That sucks!

[@backyardrestorations]

Pretty underrated video!

[@marcswain3550]

If I'm not mistaken the injector needs electricity to open up to allow fluid to pass through it

[@kcoutside7143]

Blowing the cleaner in opposite direction of the fuel flow will allow liquid threw. I’ve used a 9volt battery with wire leads in past to open injector when blowing in direction of standard fuel flow. Bike is running good now!

[@mt1885]

Wonder if it is the ethanol fuel, I think on all new bikes they are using the lowest quality ethanol fuel and it sits and ruins everything. Would be my guess on it, could be wrong but I bet this is way more common on even the big 4 brands. The price on the fuel injector is not bad, I think KTM parts are less expensive than the big 4.

[@hamish3766]

Good vid, can you confirm that there is only one o ring on the throttle body side of the injector, and 2 on the fuel rail side? Mine is a '18 500, but they all appear the same. I think there is a printing error in the microfiche

[@mt1885]

Replace all of them o-rings as well - still the KTM 350 is the ultimate bike just AWESOME the big 4 seem to be flat lined on any new bikes. Guessin they will be spending money on battery powered shopping karts.

[@user-sp8eb6iz7f]

"m t" on his 350 will never beat "m t" on his 450.

[@koreywhitt9484]

Appreciate not explaining anything while doing it❤

[@distilledfreedom1840]

How on earth did you get the injector out? On my 2015 husqvarna fe 501 it seems you have to remove the whole air boot/sub frame. Am I missing something? It's locked in directly under the main stem of the frame.

[@kcoutside7143]

Your bike would definitely be laid out differently compared to the ‘21, it’s been a while, I don’t remember removing complete air boot/box. I may have removed top subframe bolts & loosened the lower bolts, so it could be tilted rearward slightly. I’ll have to look at it tomorrow.

[@felipelopes9317]

Could you mention about the symptom please. Have some video ?

[@kcoutside7143]

I had an erratic idle & it would stall occasionally when pulling clutch in while riding.

[@donatp8310]

I got a ktm duke 690. The black little rubber is a little bit damaged, is thats maybe a reason why it cuts off sometimes?

[@kcoutside7143]

It’s possible, could be something in fuel system (pump or filter) or electrical ground or coil.

[@fredriknorgren43]

Is it ok to use brake clean in to the injectior? Or is it only carb clean that vill work?

[@kcoutside7143]

I’m not saying it’s ok, I have used both, just do it at your own risk.

[@Crust2013]

My 17 sxf450 goes awsome for 1 day or 10 days then its spluts and carrys new loom voltage earth new pump upgraded filters ,fuk knows