Hi-bird 250cc NightHawk clone fuel issues

dagger57 · 06-10-2008, 09:37 PM

Having fuel delivery issues. Carb seems to be getting fuel fine. Changed the c clip on the pin across the board. Engine starts, idles sometimes, but seems to cut out after revving past 4k rpm. Any suggestions? Jets seem fine and clear.

dr1445 · 06-11-2008, 06:20 AM

if the float bowl and jets are clean, then it could be a ignition issue. does that machine come with some shipping gel in carb?

dagger57 · 06-11-2008, 08:18 AM

Bowl and jets are clean. Seem to be spark fine. We pulled the spark plug and ran the starter for a bit and couldn't smell hardly any fuel in the cylinder.

dr1445 · 06-12-2008, 06:06 AM

sounds like you need to give a call to the outfit you purchased the bike from. they might have a handle on the problem, and save you hours of investigation.

katoranger · 06-12-2008, 11:29 AM

I think you have a carb problem with it not getting enough fuel for high rpm.

Did you run a fine wire through the jets? It may be just one small speck of dirt plugging it.

There is a carb break down sticky in the dual sport forum showing all the parts.

It doesn't take much for it to plug.

Also when you moved the c-clip did you move it toward the pointed end?

Allen

dagger57 · 06-16-2008, 09:03 AM

Took the carb completely apart and cleaned it with carb cleaner. SEems to work better. Will see after a couple days of riding.

Thanks!

IronFist · 06-17-2008, 03:35 PM

You could add a fuel line filter, it might help

dagger57 · 06-17-2008, 06:38 PM

it already has one. Still having a couple of issues. Seems to be inconsistant on fuel delivery. Although I was able to ride it around a bit finally

katoranger · 06-17-2008, 06:41 PM

Is the choke operating correctly?

Make sure it is not sticking. Allen

IronFist · 06-17-2008, 09:24 PM

Also your float bowls migh be sticking??????

dagger57 · 06-17-2008, 09:46 PM

both seem to be operating fine. When cold, I can rev it up to about 5-6k and let it down fast and it sometimes dies from this... Also I cannot seem to get it to idle below 2k or so,

katoranger · 06-17-2008, 10:27 PM

I think you are too lean. Will it run better slightly choked?

Allen

dr1445 · 06-18-2008, 05:31 AM

maybe the tank petcock itself has some crud in it blocking the fuel flow.. that might be worth chasing down. also with the idle at 2k it sounds like a sticking throttle or slide not allowing the carb into the idle jet range.

Qingdao · 06-28-2008, 11:02 PM

If there are this many problems with fuel delivery. I would dunk the carb, and buy a rebuild kit. Rebuild kits do wonders, carb parts can look clean, but they are sometimes deciving.

PS: Or it could be bad gas remember KISS.

Qingdao · 06-28-2008, 11:11 PM

How many miles are on the bike?

06-10-2008, 09:37 PM	#1
dagger57 Join Date: May 2008 Location: Columbia, MO Posts: 25	Hi-bird 250cc NightHawk clone fuel issues Having fuel delivery issues. Carb seems to be getting fuel fine. Changed the c clip on the pin across the board. Engine starts, idles sometimes, but seems to cut out after revving past 4k rpm. Any suggestions? Jets seem fine and clear.
	0

06-12-2008, 11:29 AM	#5
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	I think you have a carb problem with it not getting enough fuel for high rpm. Did you run a fine wire through the jets? It may be just one small speck of dirt plugging it. There is a carb break down sticky in the dual sport forum showing all the parts. It doesn't take much for it to plug. Also when you moved the c-clip did you move it toward the pointed end? Allen __________________ You meet the nicest people on a Honda Clone.
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06-17-2008, 06:41 PM	#9
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	Is the choke operating correctly? Make sure it is not sticking. Allen __________________ You meet the nicest people on a Honda Clone.
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06-17-2008, 10:27 PM	#12
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	I think you are too lean. Will it run better slightly choked? Allen __________________ You meet the nicest people on a Honda Clone.
	0

06-28-2008, 11:02 PM	#14
Qingdao Join Date: Jun 2008 Location: Charleston, SC Posts: 351	If there are this many problems with fuel delivery. I would dunk the carb, and buy a rebuild kit. Rebuild kits do wonders, carb parts can look clean, but they are sometimes deciving. PS: Or it could be bad gas remember KISS. __________________ <div><a href="http://www.youtube.com/watch?v=X2ilH...s</a></div><br />
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06-11-2008, 06:20 AM	#2
dr1445 Join Date: Feb 2008 Posts: 85	if the float bowl and jets are clean, then it could be a ignition issue. does that machine come with some shipping gel in carb?
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06-11-2008, 08:18 AM	#3
dagger57 Join Date: May 2008 Location: Columbia, MO Posts: 25	Bowl and jets are clean. Seem to be spark fine. We pulled the spark plug and ran the starter for a bit and couldn't smell hardly any fuel in the cylinder.
	0

06-12-2008, 06:06 AM	#4
dr1445 Join Date: Feb 2008 Posts: 85	sounds like you need to give a call to the outfit you purchased the bike from. they might have a handle on the problem, and save you hours of investigation.
	0

06-16-2008, 09:03 AM	#6
dagger57 Join Date: May 2008 Location: Columbia, MO Posts: 25	Took the carb completely apart and cleaned it with carb cleaner. SEems to work better. Will see after a couple days of riding. Thanks!
	0

06-17-2008, 03:35 PM	#7
IronFist Join Date: Apr 2007 Location: Toronto Ontario Canada Posts: 2,585	You could add a fuel line filter, it might help
	0

06-17-2008, 06:38 PM	#8
dagger57 Join Date: May 2008 Location: Columbia, MO Posts: 25	it already has one. Still having a couple of issues. Seems to be inconsistant on fuel delivery. Although I was able to ride it around a bit finally
	0

06-17-2008, 09:24 PM	#10
IronFist Join Date: Apr 2007 Location: Toronto Ontario Canada Posts: 2,585	Also your float bowls migh be sticking??????
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06-17-2008, 09:46 PM	#11
dagger57 Join Date: May 2008 Location: Columbia, MO Posts: 25	both seem to be operating fine. When cold, I can rev it up to about 5-6k and let it down fast and it sometimes dies from this... Also I cannot seem to get it to idle below 2k or so,
	0

06-18-2008, 05:31 AM	#13
dr1445 Join Date: Feb 2008 Posts: 85	maybe the tank petcock itself has some crud in it blocking the fuel flow.. that might be worth chasing down. also with the idle at 2k it sounds like a sticking throttle or slide not allowing the carb into the idle jet range.
	0

06-28-2008, 11:11 PM	#15
Qingdao Join Date: Jun 2008 Location: Charleston, SC Posts: 351	How many miles are on the bike? __________________ <div><a href="http://www.youtube.com/watch?v=X2ilH...s</a></div><br />
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