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#46 |
Join Date: Dec 2023
Location: Knoxville
Posts: 56
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Will the ECU allow all the electricity to stay on and allow the engine to crank but not turn over I'm also going to look into that though too
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2020 Hawk DLX 250 factory top speed: 70 |
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#47 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,656
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With out scanning the ECU, you have no way to diagnose the problem. Does the display flash any codes? There should be information in your owners manual for that.
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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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#48 |
Join Date: May 2021
Posts: 345
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Does the engine turn over briskly when you try to start?
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#49 |
Join Date: Sep 2021
Location: De Soto, MO
Posts: 1,918
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Always start with the simple and cheap fixes first. Fresh oil, adjust the valves properly, put in a new plug, make sure the air cleaner is clean enough. I know you did replace the plug, but is it a good NGK one or a crappy Chinese plug? It matters.
If none of that works, then you have further digging to do. Next, make sure all electrical connections are tight. Checking the simple and obvious things cures a lot of problems.
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#51 |
Join Date: Aug 2020
Location: Australia
Posts: 1,355
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if you have compression and spark then the only thing missing is fuel..
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#52 |
Join Date: Dec 2023
Location: Knoxville
Posts: 56
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Update I did a compression test it was at 120 I read online it's supposed to be 140 so I automatically assumed that's probably from the valid adjustment that needs to be done I have a spark now that was some chords that was unattached probably from the neighbor but I still couldn't get enough charging my battery for it to start so the battery might be why it's not starting but that still doesn't address the problem of it shutting off after a certain RPMs
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2020 Hawk DLX 250 factory top speed: 70 |
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#53 | |
Join Date: Sep 2021
Location: De Soto, MO
Posts: 1,918
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Quote:
This is more common on the exhaust valve, since it always gets hot exhaust air going past it. The intake valve is cooled by the cooler air/fuel charge coming in, so is generally less of a problem.
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2021 Lifan Xpect--sold 2022 Lifan KPX 1972 Honda CT90--The Carrot 1969 Honda CT90--The Tomahto Cheesy is the WDK (workplace drama king). Now retired. Nope, back in the saddle. Climate: The Movie https://www.youtube.com/watch?v=A24fWmNA6lM How our government really works https://www.youtube.com/watch?v=QjadCd0VRBw Question all authority.....think for yourself |
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#54 |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,564
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Tom is dead on. Adjust those valves before you bother doing anything else. It is a wild card that you can't avoid. Until you know your valves are opening and closing completely and at the right time, you can't really troubleshoot.
Also, 120psi compression is easily enough for the engine to end pretty normal if it's the rings. But if it's the valves, it can stop running when it gets hotter
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-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 Last edited by Thumper; 12-08-2023 at 09:10 AM. |
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#55 |
Join Date: Dec 2023
Location: Knoxville
Posts: 56
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Great advice guys I'll see if I can get that done today
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2020 Hawk DLX 250 factory top speed: 70 |
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#56 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,656
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So I see you started another thread on the same subject. I may sound harsh but have you taken any of the advise and done the valve adjustment suggested yet? If not, do so. We can't help you if you don't take the advise given. You don't need to start multiple threads on the same subject. All that does is make it harder to resolve your issue.
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#57 | |
Join Date: Dec 2023
Location: Knoxville
Posts: 56
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Quote:
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2020 Hawk DLX 250 factory top speed: 70 |
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#58 |
Join Date: Dec 2023
Location: Knoxville
Posts: 56
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2020 Hawk DLX 250 factory top speed: 70 |
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#59 |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,564
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Meh. It's OK.
But you do seem to have a check engine icon lit up on the instrument panel in that video. Seems like a good idea to see if you can read the code(s) getting thrown. That would be my first step after setting valve clearance. You can also charge the battery overnight between troubleshooting sessions. Jump it if you have to, but get a charger on that battery. I don't have EFI like yours, so I don't get codes (just a plain ol' CDI system).
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-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 |
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#60 | |
Join Date: Dec 2023
Location: Knoxville
Posts: 56
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Quote:
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2020 Hawk DLX 250 factory top speed: 70 |
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Tags |
#hawk250, hawk 250 electric start, hawk 250 motor, hawk dlx |
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