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DirtriderZ
Brucie.T

KTM 350 XCF 2016...cutting out issue!

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Hey all,

See the video below in regards to the issue im having.

Already changed:

spark plug,

in line fuel filter,

Disconnected kill switch

Any ideas would be great!

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Have you check wiring connections,I had an issue a few years ago where it was bogging down ect.after telling them to change the wiring Lomb they found some connections that were corroded from washing with the gerni 

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Yes and gradually started happening more frequently!

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Is it wet or have you just washed the bike when it happens?

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Happens in the wet and dry mate.
Normally on st where you are off and on the throttle..never had it happen down straights or when you have it wide open

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Unplug the kill switch on the left bar and see if it still does it . Then do the same for the right kill switch . The spring loaded terminal can break off inside the switch allowing function sometimes but not all the time.

although if you never have a problem starting ignore my post ... :)

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Unplug the kill switch on the left bar and see if it still does it . Then do the same for the right kill switch . The spring loaded terminal can break off inside the switch allowing function sometimes but not all the time.

although if you never have a problem starting ignore my post ...


Thanks for the tip mate,
But she always starts after that cut out.

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4 minutes ago, 5EXC-F said:

Increase the idle slightly and repeat the test, curious to see if it helps .

It may identify a mapping problem.

Might be onto something here? You did have it remapped didn't you Brucie? Maybe with a bit of riding and engine wear with the different mapping might be affecting something? I know my Berg flames out a bit when I am popping the throttle but not like what you have.

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Might be onto something here? You did have it remapped didn't you Brucie? Maybe with a bit of riding and engine wear with the different mapping might be affecting something? I know my Berg flames out a bit when I am popping the throttle but not like what you have.


Yeah 100% worth looking into,will send the YouTube clip to the bloke that re-mapped my bike and see what he has to say.


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Is it running rich after you got it mapped?

Running a higher idle my be a bandaid fix but it sounds like the bike is loading up and then pops/flames out. My berg with a vortex unit did that when l once tried to lower the idle down on a certain mapping and it would flame out, idled OK and rev's no probs but as soon as you come off idle, pop.

Try raising the idle up but definitely see your bloked who mapped it

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Just had a chat with the mapping bloke and he's pretty confident that it wont be the mapping as it has been running spot on until now.
He said if it was running to rich and causing the cut out the new spark plug would've sorted that problem out.

Hoping to get my hands on a standard ECU and see if it still occurs to eliminate the problem!

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Have the ECU changed since 2013 as l still have my berg/ktm 350 std ECU you could borrow?



I've got a mate with a 16 350 sxf that im going to try.

Cheers for the offer mate

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My shitbox 16 350 sxf does that too. Always just as I'm about to blip over a lot and nearly throws me over the bars. Currently getting a fly wheel weight installed to see if this fixes the problem which, from all reports does. Will let you know. 

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7f704ef39d8bf5dc1e59aa6df87405c9.jpg

Just pulled my baffle out for a look and that's how black it is... to rich? Or normal amount of black soot?

Just turned it over,warmed it up and the reved it like the video and didn't cut out..

Possibility that the baffle is choking it up to much and causing it to cut out?

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Have you worked out the problem Brucie ?



Umm well I think so..

Took it for a spin monday on my rdo and didnt do that pop cut out once!

A bit of a mystery on how I got there but I'll take it.
Turned my idle up a tiny bit,
Cleaned/checked all the wiring plugs,
Removed the baffle(which had a fair bit of soot on it)

And it ran awesome,going to put the baffle back in on my next ride and see if it starts being a pain again..and if it does I guess ill have to see what the mapping bloke has to say about baffle vs no baffle!

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Umm well I think so..

Took it for a spin monday on my rdo and didnt do that pop cut out once!

A bit of a mystery on how I got there but I'll take it.
Turned my idle up a tiny bit,
Cleaned/checked all the wiring plugs,
Removed the baffle(which had a fair bit of soot on it)

And it ran awesome,going to put the baffle back in on my next ride and see if it starts being a pain again..and if it does I guess ill have to see what the mapping bloke has to say about baffle vs no baffle!

Sent from my SM-G900I using Tapatalk


Have you started the bike up after you washed and it was fine?

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Umm well I think so..

Took it for a spin monday on my rdo and didnt do that pop cut out once!

A bit of a mystery on how I got there but I'll take it.
Turned my idle up a tiny bit,
Cleaned/checked all the wiring plugs,
Removed the baffle(which had a fair bit of soot on it)

And it ran awesome,going to put the baffle back in on my next ride and see if it starts being a pain again..and if it does I guess ill have to see what the mapping bloke has to say about baffle vs no baffle!

Sent from my SM-G900I using Tapatalk


Have you started the bike up after you washed and it was fine?

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Have you started the bike up after you washed and it was fine?

Yep at the car wash monday afternoon after i gave it a scrub

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