06-10-2019, 05:08 PM | #1 |
Join Date: Jan 2008
Location: Northwest Florida
Posts: 39
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Hawk 250 burning oil, Cone Air filter
Hi,
Just before Christmas my son and I got a new Hawk 250 from RPS in Texas. He is the main rider and has enjoyed upgrading the bike. It has about a 1000 miles on it and starting seriously burning oil. He had put one of those "cone" air filters on it and had been doing quite a bit off road riding lately with his friends. I pulled the top off the engine and the piston and rings were badly worn. I thought I would have trouble finding parts but I "googled" CG250 piston and was amazed at how available they were. From a ebay seller we got a new piston, rings, wrist pin and retainers for 15 bucks, FREE shipping.! I was also able to find the Honda service manual for the CG engine. I honed out the cylinder and when we got the new piston it was identical to the old one. Put it all back together last night, runs great and no oil smoke. I think if you are going to use your bike off road or in dusty conditions you might want to stick with a paper filter. Hope this helps someone, Paul |
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06-10-2019, 06:39 PM | #2 |
Join Date: Apr 2018
Posts: 819
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By chance had the filter been properly oiled? I’ve ran mine through knee deep water along with dirt roading 50-100 miles a week and no gunk in the carb since I bought the bike 14 months ago.
It’s good the repairs were so cheap!!
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06-10-2019, 07:28 PM | #3 |
Join Date: Jan 2008
Location: Northwest Florida
Posts: 39
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I'm not sure how it was oiled, but you can hold it up to the light and see plenty of spaces.
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06-10-2019, 07:34 PM | #4 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,110
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Dual element foam filter with the inner foam oiled is much better if you will encounter dirt/dust. Gone several thousand miles on and off road and not one spec of dirt in my carb.
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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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06-10-2019, 08:05 PM | #5 | |
Join Date: Sep 2015
Location: East Central Hellinois
Posts: 1,344
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Quote:
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************************************************** *** " Time you enjoy wasting, is not wasted." - John Lennon “I predict future happiness for Americans, if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.” ― Thomas Jefferson "If you don't know where you're going any road will take you there" ....George Harrison song Last edited by dpl096; 06-11-2019 at 08:48 PM. |
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06-11-2019, 10:20 AM | #6 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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Agree with MD. The K&N-type filters I use for street and light trail applications. Anytime I had a dedicated dirt bike, I got an Uni or Uni-type filter and oiled it. They work great for heavy dust.
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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06-11-2019, 10:41 AM | #7 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,713
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Same here as MD and 2LZ. Properly oil filter will keep the dust out. My bike is quickly approaching the 6000 mile mark. I stuck my bore scope in over the weekend just to check things out. I still see cross hatch on the cylinder walls. Still has good compression as in no loss of. I have been running synthetic ever since my initial break-in. Approx. 800 miles.
Glad to see you got her fixed up. Gotta love these low cost bikes. Try fixing a Jap bike for that cost. lol
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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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06-11-2019, 01:30 PM | #8 |
Join Date: Jan 2016
Location: Mooresville NC
Posts: 2,116
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excellent that it was cheap to repair!
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06-11-2019, 06:55 PM | #9 |
Join Date: Dec 2016
Location: Argentina
Posts: 756
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Foam is the way to go, there are some foam filters that fit the stock airbox. Oil them from time to time and we are good to go.
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06-11-2019, 08:07 PM | #10 |
Join Date: Nov 2017
Location: Upstate SC
Posts: 129
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Congrats on the cheap fix.
Roy |
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06-12-2019, 11:26 AM | #11 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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This is the one I like, but you might need a straight neck: https://www.ebay.com/itm/BLACK-42mm-...MAAOSwFV9X0l39
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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 |
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Tags |
cg250, cone air filter, hawk 250 burning oil |
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