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04-17-2020, 08:30 AM | #1 |
Join Date: Apr 2020
Posts: 11
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Hawk 250 randomly stalls.
Hey my hawk 250 always starts and idles when its cold. But when I'm on a ride Sometimes it will randomly quit and i have to wait 10 mins for it to start again. Whenever i take out the plug it is fouled with black oil. thats the thing, when it wont start it has no spark, then 10 mins later it does. its very confusing. i can always get home because it eventually starts but sometimes i have to leave it for an hour. could it be that the oil im using is fouling the plug? Im not sure. Please Help!
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04-17-2020, 09:50 AM | #2 |
Join Date: Mar 2020
Location: NorthEast
Posts: 71
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Check the chart and go from there. Fouled plug usually means you're running too rich. Are you riding with your choke ON? Remember, choke ON position on a Hawk 250 is with the choke lever fully UP, OFF is fully DOWN.
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04-17-2020, 10:00 AM | #3 |
Join Date: Apr 2020
Posts: 11
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Thanks
Yeah my choke is definitely down. Its just so confusing. I have ordered a new mikuni carb for it though hopefully that fixes the problem. i hear the stock carbs are trash and will always run rich. Ill get a new plug too.
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04-17-2020, 10:15 AM | #4 |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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I'm assuming this is a new bike? Stock carb come tuned real lean. With oil on the plug you wouldn't of happen to over fill with oil? Have you adjusted the valves yet? The valves are usually set with no gap from the factory. This would cause the stalling issue when it get hot and will start after cooling off.
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2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 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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04-17-2020, 10:18 AM | #5 |
Join Date: Apr 2020
Posts: 11
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Thanks
Its actually an older bike i bought on my local classifieds. thanks for the info. i'm pretty sure the oils not over full. do you know what type of oil i should be using though?
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04-17-2020, 10:30 AM | #6 |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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Any motorcycle designed for wet clutch. Look for the JASO MA certification. 10w-40 or 20w-50 for hot weather.
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2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 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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04-17-2020, 12:06 PM | #7 |
Join Date: Mar 2020
Location: NorthEast
Posts: 71
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I second the "check the valve clearance" advice. My Hawk had no clearance on both intake and exhaust from the factory. You should find out (if possible) if the PO fiddled with the carb at all (different jets, etc.). If not, buy a new carb and start from scratch -- AFTER you make sure you have check/adjusted valve clearance and oil level.
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04-17-2020, 01:04 PM | #8 |
Join Date: Apr 2020
Posts: 11
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Thanks again will do. This sounds like it should resolve my problem.
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04-17-2020, 01:06 PM | #9 |
Join Date: May 2019
Location: Port Huron, Michigan
Posts: 637
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Are you losing spark, or it just wont start for 10 minutes? If you are actually losing spark the coil could be overheating and cutting out.
As for the carb, since its used god only knows what was done to it before so fresh start is good.
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2020 Triumph Tiger 900 rally. 2018 Bashan Storm 250. pz30b, digital cluster + gear indicator, unifilter and car customs full exhaust. 2019 Taotao 110b boulder atv. The "arm breaker" lol 2007 Honda VTX 1300R. 1974 Suzuki tm125, work in progress 2001 Suzuki Drz 400s. |
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04-17-2020, 01:59 PM | #10 |
Join Date: Apr 2020
Posts: 11
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Im losing spark. its very strange i wait at the side of the road for ten minutes. and kick kick kick. and all of a sudden i get electrocuted . Throw the plug back in and boom. starts first kick.
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04-17-2020, 02:04 PM | #11 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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Probably bad coil or CDI.
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2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 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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04-17-2020, 02:34 PM | #12 |
Join Date: Apr 2020
Posts: 11
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Could be. the wiring is a very big mess.
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04-17-2020, 03:17 PM | #13 |
Join Date: Feb 2020
Location: Buffalo NY
Posts: 224
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Not sure if your bike is like my apollo but make sure that your coil is properly grounded and bolted on tight. If it does not have a good ground or the coil is not snug you will lose spark and power then have starting issues. Again not sure if its the same with your bike but you should check. I second what jerry said about calves too...but you said your issue might be electrical
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BuffaloChinaRider on Youtube Bashan Storm 250 (2018) Apollo Db-36 Deluxe (2019) |
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04-17-2020, 08:52 PM | #14 |
Join Date: May 2019
Location: Port Huron, Michigan
Posts: 637
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They are really cheap, I would order one to test. I would grab a cdi too just to have one on hand. But like Buffalo said make sure the mounts that are used for grounds are clean.
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2020 Triumph Tiger 900 rally. 2018 Bashan Storm 250. pz30b, digital cluster + gear indicator, unifilter and car customs full exhaust. 2019 Taotao 110b boulder atv. The "arm breaker" lol 2007 Honda VTX 1300R. 1974 Suzuki tm125, work in progress 2001 Suzuki Drz 400s. |
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04-18-2020, 08:02 AM | #15 |
Join Date: Nov 2019
Posts: 99
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Sounds like Vapor lock. When it does it again, pop open the gas tank then try and start it.
I had put an additional fuel filter between the tank and carb and then had issues. Removed it and the problem went away. |
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