Hawk 250 RED EXHAUST PIPE

BotBike · 10-20-2022, 04:03 PM

Red hot exhaust sounds fun but it also comes with white smoke from the engine. The bike is brand new its able to run but I had it going for like 10-15 seconds when I noticed white smoke coming from the engine area and the start of the exhaust pipe turning red. I already checked for burning wires and found none and I'm going to make the fuel-air mix richer to hopefully solve the exhaust overheating issue. In the meantime does anyone have any other ideas as to what's causing these issues?

**JerryHawk250** · 10-20-2022, 04:22 PM

Okay, the white smoke is normal on first start up. Just burning off paint and what not. I don't think you are running rich but rather lean as these bikes come tuned very lean from the factory to get passed the EPA. If you are idling above 1500 rpms the exhaust will get red hot quick.

Megadan · 10-20-2022, 05:15 PM

Carb comes lean stock as Jerry stated. Also, the valves need adjusted out of the box, then again after 500 miles. Set them between .05mm and .08mm. I suggest .07mm for initial break in. After than you can go a bit tighter if desired.

**JerryHawk250** · 10-20-2022, 05:19 PM

Quote:

Originally Posted by Megadan

Carb comes lean stock as Jerry stated. Also, the valves need adjusted out of the box, then again after 500 miles. Set them between .05mm and .08mm. I suggest .07mm for initial break in. After than you can go a bit tighter if desired.

I knew i was forgetting something.

10-20-2022, 04:03 PM	#1
BotBike Join Date: Oct 2022 Posts: 14	Hawk 250 RED EXHAUST PIPE Red hot exhaust sounds fun but it also comes with white smoke from the engine. The bike is brand new its able to run but I had it going for like 10-15 seconds when I noticed white smoke coming from the engine area and the start of the exhaust pipe turning red. I already checked for burning wires and found none and I'm going to make the fuel-air mix richer to hopefully solve the exhaust overheating issue. In the meantime does anyone have any other ideas as to what's causing these issues?
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10-20-2022, 04:22 PM	#2
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,590	Okay, the white smoke is normal on first start up. Just burning off paint and what not. I don't think you are running rich but rather lean as these bikes come tuned very lean from the factory to get passed the EPA. If you are idling above 1500 rpms the exhaust will get red hot quick. __________________ 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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10-20-2022, 05:15 PM	#3
Megadan Join Date: Apr 2017 Location: Omaha, NE Posts: 8,061	Carb comes lean stock as Jerry stated. Also, the valves need adjusted out of the box, then again after 500 miles. Set them between .05mm and .08mm. I suggest .07mm for initial break in. After than you can go a bit tighter if desired. __________________ 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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