CEL no codes, stalls while riding, DLX

Sailor4809 · 07-05-2023, 08:51 AM

So bike runs great other than it will randomly cut out and won't start for about a minute after it dies, then throws the CEL. I've tried the key stroke to pull a code but it doesn't flash, however if I wait another minute or so I can do a reset key stroke and clear the CEL. Even with the light on it will run thereafter. Seems to do it more at 3/4 throttle or high speeds. Valves have been adjusted 2 or 3x. Engine does seem to be extremely hot in my opinion so since have installed oil cooler and still happens to die.
Bike has almost 4k miles, well maintained. Anyone have any idears

Thumper · 07-05-2023, 09:45 AM

If you are lucky, this is a loose wire/connector. It may also be a transiently failing sensor (like temp sensor).

Check/reset all of the connections that you can find/get to easily. Then dig deeper if needed.

If it keeps happening, and you can't get the code, you may end up replacing parts one by one. Transient failures are the worst.

Bikenut · 07-05-2023, 10:57 AM

Don't know if this will help. I had weird engine cut out issues with my Lifan KPR 200 and after hours of trying to find/figure it out I discovered a badly corroded battery terminal connection. 10 minutes of cleaning solved the problem and it has not returned since.

Sailor4809 · 07-05-2023, 05:36 PM

Also changed the plug and still nothing. Also learning that if I get into third gear and go WOT it will cut out and be rolling to a stop when it hits the high end. If I roll the throttle I can hear a noise difference like it's wanting fuel. My guess is the fuel delivery system, cam position sensor, or heat issue.
Where would I start or how would I go about checking, where's the sensors located.

clash 168cc · 07-05-2023, 09:38 PM

Load test battery, check/clean battery connections and charging system.

07-05-2023, 08:51 AM	#1
Sailor4809 Join Date: Mar 2023 Location: Fort Wayne, Indiana Posts: 26	CEL no codes, stalls while riding, DLX So bike runs great other than it will randomly cut out and won't start for about a minute after it dies, then throws the CEL. I've tried the key stroke to pull a code but it doesn't flash, however if I wait another minute or so I can do a reset key stroke and clear the CEL. Even with the light on it will run thereafter. Seems to do it more at 3/4 throttle or high speeds. Valves have been adjusted 2 or 3x. Engine does seem to be extremely hot in my opinion so since have installed oil cooler and still happens to die. Bike has almost 4k miles, well maintained. Anyone have any idears
	0

07-05-2023, 09:45 AM	#2
Thumper Join Date: Feb 2021 Location: Kansas City Posts: 2,319	If you are lucky, this is a loose wire/connector. It may also be a transiently failing sensor (like temp sensor). Check/reset all of the connections that you can find/get to easily. Then dig deeper if needed. If it keeps happening, and you can't get the code, you may end up replacing parts one by one. Transient failures are the worst. __________________ -2022 5 speed Templar X Orange, OEM 51T rear sprocket, 14T front sprocket -NOS 2020 KTM 250SX (2-stroke motocross), less than 10 hours on it
	1

07-05-2023, 10:57 AM	#3
Bikenut Join Date: Apr 2023 Location: Near Saginaw Mich. Posts: 178	Don't know if this will help. I had weird engine cut out issues with my Lifan KPR 200 and after hours of trying to find/figure it out I discovered a badly corroded battery terminal connection. 10 minutes of cleaning solved the problem and it has not returned since.
	0

07-05-2023, 05:36 PM	#4
Sailor4809 Join Date: Mar 2023 Location: Fort Wayne, Indiana Posts: 26	Also changed the plug and still nothing. Also learning that if I get into third gear and go WOT it will cut out and be rolling to a stop when it hits the high end. If I roll the throttle I can hear a noise difference like it's wanting fuel. My guess is the fuel delivery system, cam position sensor, or heat issue. Where would I start or how would I go about checking, where's the sensors located.
	0

07-05-2023, 09:38 PM	#5
clash 168cc Join Date: Jul 2022 Posts: 94	Load test battery, check/clean battery connections and charging system.
	0