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Bike died after oil change

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GoldenKTM

Vital MX member GoldenKTM 56034 GoldenKTM https://p.vitalmx.com/photos/users/56034/avatar/c50_86521021_2020_NCHSA_Rd_8_Lost_Valley_12_oclock_658_1601580511.jpg?1601579877 https://www.vitalmx.com/community/GoldenKTM,56034/all 01/29/17 6 147 5

Posts: 153

Joined: 1/29/2017

Location: WI, USA

8/4/2018 2:04 PM
Edited Date/Time: 8/4/2018 2:05 PM

Hey Vital. I changed the oil and powervalve spring on my 17 ktm 250 sx and started it up for a short ride down the road. After running for maybe 2 minutes it died without any sputtering. The engine did not seize but it feels like it lost some compression and the throttle doesn't turn normally. I have 17 hours on the bike.

I changed the spark plug and tried starting it again but it wouldn't start.

What could have possibly happened? I had gotten oil through the filter at about 10 hours but changed the oil and had no issues. I don't think that is behind the issue today.

Thank you.

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CSAR FE

Vital MX member CSAR FE 57915 CSAR FE https://p.vitalmx.com/photos/users/57915/avatar/c50_3ogswj_1496159065.jpg?1496158815 https://www.vitalmx.com/community/CSAR-FE,57915/all 05/30/17 38 392 1

Posts: 430

Joined: 5/30/2017

Location: Albuquerque, NM USA

8/4/2018 6:36 PM

What do you mean when you say the throttle doesn’t turn normally?

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GoldenKTM

Vital MX member GoldenKTM 56034 GoldenKTM https://p.vitalmx.com/photos/users/56034/avatar/c50_86521021_2020_NCHSA_Rd_8_Lost_Valley_12_oclock_658_1601580511.jpg?1601579877 https://www.vitalmx.com/community/GoldenKTM,56034/all 01/29/17 6 147 5

Posts: 153

Joined: 1/29/2017

Location: WI, USA

8/5/2018 6:01 AM

CSAR FE wrote:

What do you mean when you say the throttle doesn’t turn normally?

...more

There is more resistance when I twist the throttle open and closed than normal.

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CarlinoJoeVideo

Vital MX member CarlinoJoeVideo 41118 CarlinoJoeVideo https://p.vitalmx.com/photos/users/41118/avatar/c50_jessy1_1471467436.jpg?1471466703 https://www.vitalmx.com/community/CarlinoJoeVideo,41118/all 11/30/13 17 53 https://www.vitalmx.com/community/CarlinoJoeVideo,41118/setup 131 6614 53 5 2

Posts: 6745

Joined: 11/30/2013

Location: Portland/Los Angeles, CA USA

8/5/2018 8:34 AM

Is the gas on?

None of your symptoms have anything to do with the powervalve or oil change...

Any more details of the problem?

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Radfonz

Vital MX member Radfonz 31940 Radfonz https://p.vitalmx.com/photos/users/31940/avatar/c50_87494396_10157277617577462_4033741513836986368_n_1584311030.jpg?1584310217 https://www.vitalmx.com/community/Radfonz,31940/all 01/06/12 1 https://www.vitalmx.com/community/Radfonz,31940/setup 139 1

Posts: 139

Joined: 1/6/2012

Location: AUS

8/6/2018 4:33 AM

rag in the airbox!!!!!

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kb228

Vital MX member kb228 61852 kb228 https://p.vitalmx.com/photos/users/61852/avatar/c50_48AD01BA_8BE7_43D5_B767_B4A5D12AFA64_1538263085.jpg?1538262140 https://www.vitalmx.com/community/kb228,61852/all 01/31/18 3 74 5752 1

Posts: 5830

Joined: 1/31/2018

Location: Mansfield, OH USA

8/6/2018 5:38 AM

CSAR FE wrote:

What do you mean when you say the throttle doesn’t turn normally?

...more
GoldenKTM wrote:

There is more resistance when I twist the throttle open and closed than normal.

...more

Slide is dirty, tube is dirty, housing is dirty, or cables arent routed correctly.

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CarlinoJoeVideo

Vital MX member CarlinoJoeVideo 41118 CarlinoJoeVideo https://p.vitalmx.com/photos/users/41118/avatar/c50_jessy1_1471467436.jpg?1471466703 https://www.vitalmx.com/community/CarlinoJoeVideo,41118/all 11/30/13 17 53 https://www.vitalmx.com/community/CarlinoJoeVideo,41118/setup 131 6614 53 5 2

Posts: 6745

Joined: 11/30/2013

Location: Portland/Los Angeles, CA USA

8/6/2018 8:54 AM

CSAR FE wrote:

What do you mean when you say the throttle doesn’t turn normally?

...more
GoldenKTM wrote:

There is more resistance when I twist the throttle open and closed than normal.

...more
kb228 wrote:

Slide is dirty, tube is dirty, housing is dirty, or cables arent routed correctly.

...more

Oh yeah cable could be hooked where the gas tank meets the frame above the cylinder head. Good call!

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GoldenKTM

Vital MX member GoldenKTM 56034 GoldenKTM https://p.vitalmx.com/photos/users/56034/avatar/c50_86521021_2020_NCHSA_Rd_8_Lost_Valley_12_oclock_658_1601580511.jpg?1601579877 https://www.vitalmx.com/community/GoldenKTM,56034/all 01/29/17 6 147 5

Posts: 153

Joined: 1/29/2017

Location: WI, USA

8/7/2018 8:42 AM

CarlinoJoeVideo wrote:

Is the gas on?

None of your symptoms have anything to do with the powervalve or oil change...

Any more details of the ...more

...more

I'm pretty sure it is the jetting. I am not knowledgeable on two stroke jetting but I know it was running rich. I am in south carolina where it is very hot and humid and the bike ran very poorly when I managed to get it fired up in the garage after a spark plug change. There aren't any shops or dealers in sumter where I live or in Columbia sc that work on ktms and the nearest ktm dealer is about 2 hours away. I think I will have to suck it up and take it to someone who knows what they are doing.

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