Hawk 250 Stalls out when stopping...

Elkhart Shamrock · 05-06-2018, 06:03 PM

I have adjusted the valves. Changed the oil.
Going down the road the bike feels like its pushed back against itself then eventually looses power & stalls out. It takes a few minutes before i am able to get it to restart. This has recently just started happening. Any ideas???

Megadan · 05-06-2018, 06:47 PM

Sounds like it is almost starving for fuel. Could be vapor lock. I ran into an issue with my Hawk boiling the fuel in the bowl causing something similar. The cat in the exhaust was mainly to blame for that.

Another semi common issue is the gas cap not venting peoperly, and it essentially vacuum locks the fuel. Next time it happens, open the gas cap. Listen for a vacuum hiss and/or try to start the bike and see if it comes back to life.

Elkhart Shamrock · 05-06-2018, 07:18 PM

This problem did start happening the other day after I filled up.
What are my solutions if it is the gas cap???

timcosby · 05-06-2018, 07:36 PM

choke all the way down??

kirkallen143 · 05-06-2018, 09:59 PM

I had the same problem with stalling after I filled the tank up. I read in the manual that you are not supposed to "top off" the tank, but only fill to the filler neck because the cap will not vent.

Kirk

Elkhart Shamrock · 05-07-2018, 02:36 AM

Tonight it stalled out about every 1/4 to 1/2 mile. I even took the cap off to see if that made a difference. It did not. The choke is in the down position.

**JerryHawk250** · 05-07-2018, 07:37 AM

Remove the fuel line at the petcock and check if the fuel is flowing good. If it is then reconnect the fuel line and open the drain on the bottom of the bowl to see if the fuel flows. If not then remove the bowl on the carb to make sure the float is moving freely. Check that the float is set correctly. May need to check the valves again. Set them when it engine is cold after setting over night.

Ariel Red Hunter · 05-07-2018, 12:32 PM

Quote:

Originally Posted by Elkhart Shamrock

I have adjusted the valves. Changed the oil.
Going down the road the bike feels like its pushed back against itself then eventually looses power & stalls out. It takes a few minutes before i am able to get it to restart. This has recently just started happening. Any ideas???

I wonder if the coil is causing this...ARH

Weldangrind · 05-08-2018, 11:40 AM

The good news is that coils and CDI's are cheap and plentiful. It would be a good idea to buy one of each for troubleshooting purposes.
I had a friend bring a quad over (with the same CG motor that many of us have in a dual sport bikes) because it wouldn't run properly. I traced the problem to a faulty coil, so I popped a new spare in that I had. It still wouldn't run properly, so I checked the new coil; the coil was good but the wire was bad. I used the old wire with the new coil and it fired right up. Such is life with China rides.

05-06-2018, 06:03 PM	#1
Elkhart Shamrock Join Date: May 2018 Posts: 3	Hawk 250 Stalls out when stopping... I have adjusted the valves. Changed the oil. Going down the road the bike feels like its pushed back against itself then eventually looses power & stalls out. It takes a few minutes before i am able to get it to restart. This has recently just started happening. Any ideas???
	0

05-06-2018, 06:47 PM	#2
Megadan Join Date: Apr 2017 Location: Omaha, NE Posts: 8,032	Sounds like it is almost starving for fuel. Could be vapor lock. I ran into an issue with my Hawk boiling the fuel in the bowl causing something similar. The cat in the exhaust was mainly to blame for that. Another semi common issue is the gas cap not venting peoperly, and it essentially vacuum locks the fuel. Next time it happens, open the gas cap. Listen for a vacuum hiss and/or try to start the bike and see if it comes back to life. __________________ Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124
	0

05-06-2018, 07:36 PM	#4
timcosby Join Date: Nov 2016 Location: robertsdale alabama usa Posts: 1,007	choke all the way down?? __________________ 1991 harley heritage softail classic 2016 hawk kaw h1 400 tripple 13' long chopper in progress 2009 johnny pag bar hog 2004 hd electra glide ultra classic shriner edition 1997 harley davidson 1200 sportster 1972 harley davidson amf sx250
	1

05-07-2018, 07:37 AM	#7
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,574	Remove the fuel line at the petcock and check if the fuel is flowing good. If it is then reconnect the fuel line and open the drain on the bottom of the bowl to see if the fuel flows. If not then remove the bowl on the carb to make sure the float is moving freely. Check that the float is set correctly. May need to check the valves again. Set them when it engine is cold after setting over night. __________________ 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel
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05-08-2018, 11:40 AM	#9
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	The good news is that coils and CDI's are cheap and plentiful. It would be a good idea to buy one of each for troubleshooting purposes. I had a friend bring a quad over (with the same CG motor that many of us have in a dual sport bikes) because it wouldn't run properly. I traced the problem to a faulty coil, so I popped a new spare in that I had. It still wouldn't run properly, so I checked the new coil; the coil was good but the wire was bad. I used the old wire with the new coil and it fired right up. Such is life with China rides. __________________ 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
	1

05-06-2018, 07:18 PM	#3
Elkhart Shamrock Join Date: May 2018 Posts: 3	This problem did start happening the other day after I filled up. What are my solutions if it is the gas cap???
	0

05-06-2018, 09:59 PM	#5
kirkallen143 Join Date: May 2015 Posts: 84	I had the same problem with stalling after I filled the tank up. I read in the manual that you are not supposed to "top off" the tank, but only fill to the filler neck because the cap will not vent. Kirk
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05-07-2018, 02:36 AM	#6
Elkhart Shamrock Join Date: May 2018 Posts: 3	Tonight it stalled out about every 1/4 to 1/2 mile. I even took the cap off to see if that made a difference. It did not. The choke is in the down position.
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