Hawk 250 starting issues

Lopez4163 · 11-10-2022, 09:48 PM

Hey everyone, new hawk 250 owner. Put it together and installed new nibbi carb and been riding fine but I been running to issues with starting it. After a cold start it can take about 10 minutes to get her to turn on with a lot of cranking and holding the throttle for quite a bit. I adjusted the carbs many times, I have a 110 main and 40 pilot in. I’m in NY, any recommendations on jetting or what it could be? I’ve drained the battery once trying to start it since it struggles to stay on even after a cold start. I can step away for 1 hour and when I try to turn it back lt on it’s a whole process

Megadan · 11-10-2022, 10:16 PM

Pilot jet is too big and the idle mixture is likely too rich.also, if you haven't done so, adjust the valve lash or you will have nothing but issues.

**JerryHawk250** · 11-11-2022, 07:32 AM

I'm with Megadan on this one. I would start with adjusting the valves first before continuing trying to tune it. If you installed a PE30 on a stock Hawk engine you will have a hard time tuning. A PE28fl would be a better carb for a stock engine.

buzz · 11-11-2022, 01:28 PM

Just put stock carb back on, Just needs bigger jet think mine is a 110.

11-10-2022, 09:48 PM	#1
Lopez4163 Join Date: Nov 2022 Posts: 1	Hawk 250 starting issues Hey everyone, new hawk 250 owner. Put it together and installed new nibbi carb and been riding fine but I been running to issues with starting it. After a cold start it can take about 10 minutes to get her to turn on with a lot of cranking and holding the throttle for quite a bit. I adjusted the carbs many times, I have a 110 main and 40 pilot in. I’m in NY, any recommendations on jetting or what it could be? I’ve drained the battery once trying to start it since it struggles to stay on even after a cold start. I can step away for 1 hour and when I try to turn it back lt on it’s a whole process
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11-10-2022, 10:16 PM	#2
Megadan Join Date: Apr 2017 Location: Omaha, NE Posts: 7,976	Pilot jet is too big and the idle mixture is likely too rich.also, if you haven't done so, adjust the valve lash or you will have nothing but issues. __________________ 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
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11-11-2022, 07:32 AM	#3
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,552	I'm with Megadan on this one. I would start with adjusting the valves first before continuing trying to tune it. If you installed a PE30 on a stock Hawk engine you will have a hard time tuning. A PE28fl would be a better carb for a stock engine. __________________ 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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11-11-2022, 01:28 PM	#4
buzz Join Date: Dec 2020 Location: Dayton Pa. Posts: 857	Just put stock carb back on, Just needs bigger jet think mine is a 110.
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