Engine goes out

Trailbikeryder · 06-09-2014, 10:43 AM

Hi guys,

I was on the road yesterday riding my Skyteam v-raptor 250 70-80 KpH when all of a sudden the engine went out and I had to stop. It would start up again, but as soon as I turned the throttle it went right back off. Had to call the Automobile Club ADAC to get towed home.
Any idea where to look first before I take everything apart? Thanks.

Weldangrind · 06-09-2014, 10:57 AM

Aside from the typical fuel, air and spark issues, I'd suspect the CDI.

culcune · 06-09-2014, 10:41 PM

Mine have been spark plugs on a few occasions, and empty fuel tank once or twice. For more technical 'stuff' Weld's suggestion is probably the next thing. I am quite sure CDIs are pretty easy to change, too.

SpudRider · 06-10-2014, 01:42 AM

I also suspect a faulty CDI unit.

Krasi_BG · 06-10-2014, 04:07 AM

Does it cut suddenly, like from the kill switch, or it bogs a bit before dieing? Do you have fuel? Reserve?

Sudden stop usually means electrical problem, while bogging must be fuel related. Since it did start, I vote for carb problem - most probably a clogged jet or something, as we don't have filters on these bikes and the tank is metal.

Try running it with the choke pulled up as the its jet bypasses all other jets. I had this issue once, and I "fixed" it by knocking the carburetor with a screwdriver handle. Apparently the clog dropped and it was all good.

Krasi_BG · 06-16-2014, 02:41 AM

Well done, Trailbikeryder!

I don't want to brag (much!), but I think I had this sorted way back in reply 5 of this thread

Quote:

Originally Posted by Krasi_BG

...Since it did start, I vote for carb problem - most probably a clogged jet or something...

SpudRider · 06-16-2014, 12:29 PM

Quote:

Originally Posted by Krasi_BG

Well done, Trailbikeryder!

I don't want to brag (much!), but I think I had this sorted way back in reply 5 of this thread

culcune · 06-16-2014, 10:41 PM

Quote:

Originally Posted by Krasi_BG

Well done, Trailbikeryder!

I don't want to brag (much!), but I think I had this sorted way back in reply 5 of this thread

Coincidentally, the CDI suggestion fixed my problem.

Trailbikeryder · 06-10-2014, 05:39 PM

Hi,

first I checked the spark plug to see how it looks.. black. I think that means more gas then air, right?
Theres enough gas in the tank and is on "on" position arrow down. Opened the top lid of the carburetor to see if needle ist stuck or something. Seems to be ok. Checked air box if filter was dirty, but it not dusty or dirty. Checked screw from intake going to air box - it was a little loose and tightend it. Then put everything back together. She starts up and stays on, but now only if choke is off and full throttle, very loud and smokey. Let go throttle and she goes out right away.

SpudRider · 06-10-2014, 06:05 PM

I stongly suspect a faulty CDI unit. Do you have a spare CDI unit? If not, I certainly encourage you to purchase a spare.

A spare CDI unit greatly facilitates troubleshooting the electrical system, even if your present CDI unit is good.

Trailbikeryder · 06-11-2014, 08:30 AM

I don't have a spare one here, but I will purchase one. I'll keep you posted.

SpudRider · 06-11-2014, 01:20 PM

Trailbikeryder · 06-11-2014, 02:48 PM

Do I need one that is DC or AC? They have both. The one is if it gets the power from the battery and the other one if it gets from the generator.

SpudRider · 06-11-2014, 03:49 PM

Quote:

Originally Posted by Trailbikeryder

Do I need one that is DC or AC? They have both. The one is if it gets the power from the battery and the other one if it gets from the generator.

You have to check your wiring diagram to determine whether you need an AC-CDI unit or a DC-CDI unit.

Can your dealer help you determine which CDI unit you need?

Trailbikeryder · 06-11-2014, 04:32 PM

Can't ask dealer, but I have the electrical diagram.
If I'm reading this diagram correctly, the CDI ist not directly connected to battery. Since its not connected to "Gr" or "R". Bk/R and B/R is going to Magneto but none directly to battery. So AC would be correct?

06-09-2014, 10:43 AM	#1
Trailbikeryder Join Date: Jan 2013 Location: Germany Posts: 231	Engine goes out Hi guys, I was on the road yesterday riding my Skyteam v-raptor 250 70-80 KpH when all of a sudden the engine went out and I had to stop. It would start up again, but as soon as I turned the throttle it went right back off. Had to call the Automobile Club ADAC to get towed home. Any idea where to look first before I take everything apart? Thanks. __________________ My CB : http://www.youtube.com/watch?v=ZbZ8q-grmOQ 2012 Skyteam V-Raptor 250 2011 Yamaha Tenere XT 660Z abs 1996 Kawasaki Vulcan 800 Classic 1989 Kawasaki GPZ 500
	0

06-09-2014, 10:57 AM	#2
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Aside from the typical fuel, air and spark issues, I'd suspect the CDI. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	0

06-09-2014, 10:41 PM	#3
culcune Join Date: May 2006 Location: Yuma, Arizona Posts: 9,035	Mine have been spark plugs on a few occasions, and empty fuel tank once or twice. For more technical 'stuff' Weld's suggestion is probably the next thing. I am quite sure CDIs are pretty easy to change, too. __________________ "They say that life's a carousel, spinning fast you got to ride it well..." TGB Delivery Scooter 150 TMEC 200 Enduro--carcass is sadly rotting in the backyard
	0

06-10-2014, 01:42 AM	#4
SpudRider Join Date: Jul 2008 Location: Idaho Posts: 25,054	I also suspect a faulty CDI unit. __________________ Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894
	0

06-10-2014, 05:39 PM	#9
Trailbikeryder Join Date: Jan 2013 Location: Germany Posts: 231	Hi, first I checked the spark plug to see how it looks.. black. I think that means more gas then air, right? Theres enough gas in the tank and is on "on" position arrow down. Opened the top lid of the carburetor to see if needle ist stuck or something. Seems to be ok. Checked air box if filter was dirty, but it not dusty or dirty. Checked screw from intake going to air box - it was a little loose and tightend it. Then put everything back together. She starts up and stays on, but now only if choke is off and full throttle, very loud and smokey. Let go throttle and she goes out right away. __________________ My CB : http://www.youtube.com/watch?v=ZbZ8q-grmOQ 2012 Skyteam V-Raptor 250 2011 Yamaha Tenere XT 660Z abs 1996 Kawasaki Vulcan 800 Classic 1989 Kawasaki GPZ 500
	0

06-10-2014, 04:07 AM	#5
Krasi_BG Join Date: Nov 2011 Location: Sofia, Bulgaria Posts: 436	Does it cut suddenly, like from the kill switch, or it bogs a bit before dieing? Do you have fuel? Reserve? Sudden stop usually means electrical problem, while bogging must be fuel related. Since it did start, I vote for carb problem - most probably a clogged jet or something, as we don't have filters on these bikes and the tank is metal. Try running it with the choke pulled up as the its jet bypasses all other jets. I had this issue once, and I "fixed" it by knocking the carburetor with a screwdriver handle. Apparently the clog dropped and it was all good.
	0

06-10-2014, 06:05 PM	#10
SpudRider Join Date: Jul 2008 Location: Idaho Posts: 25,054	I stongly suspect a faulty CDI unit. Do you have a spare CDI unit? If not, I certainly encourage you to purchase a spare. A spare CDI unit greatly facilitates troubleshooting the electrical system, even if your present CDI unit is good. __________________ Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894
	0

06-11-2014, 08:30 AM	#11
Trailbikeryder Join Date: Jan 2013 Location: Germany Posts: 231	I don't have a spare one here, but I will purchase one. I'll keep you posted. __________________ My CB : http://www.youtube.com/watch?v=ZbZ8q-grmOQ 2012 Skyteam V-Raptor 250 2011 Yamaha Tenere XT 660Z abs 1996 Kawasaki Vulcan 800 Classic 1989 Kawasaki GPZ 500
	0

06-11-2014, 01:20 PM	#12
SpudRider Join Date: Jul 2008 Location: Idaho Posts: 25,054	__________________ Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894
	0

06-11-2014, 02:48 PM	#13
Trailbikeryder Join Date: Jan 2013 Location: Germany Posts: 231	Do I need one that is DC or AC? They have both. The one is if it gets the power from the battery and the other one if it gets from the generator. __________________ My CB : http://www.youtube.com/watch?v=ZbZ8q-grmOQ 2012 Skyteam V-Raptor 250 2011 Yamaha Tenere XT 660Z abs 1996 Kawasaki Vulcan 800 Classic 1989 Kawasaki GPZ 500
	0

06-11-2014, 04:32 PM	#15
Trailbikeryder Join Date: Jan 2013 Location: Germany Posts: 231	Can't ask dealer, but I have the electrical diagram. If I'm reading this diagram correctly, the CDI ist not directly connected to battery. Since its not connected to "Gr" or "R". Bk/R and B/R is going to Magneto but none directly to battery. So AC would be correct? __________________ My CB : http://www.youtube.com/watch?v=ZbZ8q-grmOQ 2012 Skyteam V-Raptor 250 2011 Yamaha Tenere XT 660Z abs 1996 Kawasaki Vulcan 800 Classic 1989 Kawasaki GPZ 500
	0