sZongshen Sierra 200 running funkey

tconners · 07-25-2009, 01:20 AM

Brand new 60 miles:
Throttle response is very slow.
Twist and it is slow to respond and recover. Just no snap to the throttle.
Going up hill is slow!
Im thinking lean as it does not pop when quickly twisting to WOT but is slow to build RPM's.
Been a while since diagnosing bikes and could use some opinions.
Plug color to come in the am!

tconners · 07-25-2009, 01:23 AM

Also jet type and size recommendations are welcome!
Please! :roll:

AZ200cc · 07-25-2009, 12:26 PM

Post a pic of the plug

dwholler · 07-25-2009, 03:48 PM

double check your throttle and choke cable routing. i had an issue where the fuel filter was binding up on the C shaped cable guide on the carb

dwholler · 07-25-2009, 09:15 PM

also another thing... this may sound silly.. but remember the choke is OFF when its switched toward you... I made that easy mistake because the idle was not adjusted correctly when i bought the bike.

The easiest way is to get the bike warmed up, switch the choke toward you (OFF) and it should idle at a nice smooth low idle. If it revs when the choke is in the off position the idle needs adjusted down. When the choke is turned on when the bike is warm, the bike will die.

TheRealWorld · 07-25-2009, 10:59 PM

This is most likely fuel, so check all the basics. If there is any chance that you got some bad fuel, check your filter. Make sure you have enough gas in the tank. Look for a kink in the fuel line. Make sure you have no water in the small bowel on the gas valve. Make sure you have some type of vent on your fuel tank.

FastDoc · 07-27-2009, 12:38 PM

Nowadays I'd put nothing past the CDI... :(

DesertRider · 07-28-2009, 11:25 AM

when I first opened up and started my Zong, it ran just how you described it, until I moved the C-clip in the carb, Ran perfect and throttle response was what it should be. Fixed mine, just a thought ? What is your elevation as well ?

tconners · 08-02-2009, 10:29 PM

Sorry been in the hospital.

Anyway nice white lean looking plug!
Wasnt there a link about moving the c-clip somewhere?
Oh DesertRider im in issaquah wa ;-)
WHere exactly are you? Would be cool to meet up and talk dual sport.

ALT: close to sea level.

Also what about a louder pipe for saftey without a jet change?
Anyone have luck with that?
Or cutting open and moding the stock pipe?
I have a plasma and mig so Im not scared!
:twisted:

tconners · 08-02-2009, 10:34 PM

Also already upgraded fuel lines and filter as well as checking all cable routes.

DesertRider · 08-03-2009, 01:22 PM

I recommend moving the C-clip, your elevation is not far off from mine, it will make the world of difference in how it run's. A real white plug, you are obviously running too lean, need more fuel. Check my build up -->http://www.chinariders.net/modules.p...ewtopic&t=8058 I have added a FMF exhaust, and it is the best mod I have done to date. I don't think you will be able to get away without re-jetting though, opening up the exhaust more will cause it to run leaner yet, so you have to add more fuel to counter what you have done, it is VERY EASY though.

tconners · 08-04-2009, 06:26 PM

Thanks, already read your mods and the pipe and jets are on the way.
I wil document here in this thread.
Thanks man.
;-)

tconners · 08-04-2009, 06:40 PM

Oh and DesertRider
You suck!
As I know all the awsome places you have to ride in the ease.
Im jelious!
:P

FastDoc · 08-04-2009, 07:23 PM

a) We DO have it awesome in the desert up here.
b) It's been over 100 degrees for about 10 days now.
c) It's a 'dry heat' FWIW :roll:

tconners · 08-26-2009, 09:52 PM

So now I am up to a 140 jet and have a nice hearshey bar looking brown plug. But still have some ping's at high rpm's. "137 was still a little grey on the plug, so the 140" Ordering a pipe asap I think I need more taper in the end of the metering rod as well. If anyone has the FMF jet kit with rods ping me and I would like to buy a few rods to play with.
Going to 142 "stock yamaha jet for this clone's yamaha counterpart" next after pipe change.
8O

07-25-2009, 01:20 AM	#1
tconners Join Date: Jul 2009 Posts: 13	sZongshen Sierra 200 running funkey Brand new 60 miles: Throttle response is very slow. Twist and it is slow to respond and recover. Just no snap to the throttle. Going up hill is slow! Im thinking lean as it does not pop when quickly twisting to WOT but is slow to build RPM's. Been a while since diagnosing bikes and could use some opinions. Plug color to come in the am!
	0

07-25-2009, 12:26 PM	#3
AZ200cc Join Date: Apr 2007 Location: Show Low Arizona Posts: 2,889	Post a pic of the plug __________________ <br />2001 Suzuki DR200SE<br />1997 Suzuki RM250 YIKES<br />1995 Yamaha Breeze 125 daughters<br />1991 Honda XR80r Restored<br />maybe a 2003 Yamaha TTR90
	0

07-27-2009, 12:38 PM	#7
FastDoc Join Date: Mar 2009 Location: Southeastern Washington desert Posts: 14,761	Nowadays I'd put nothing past the CDI... :( __________________ Happy to serve.
	0

07-28-2009, 11:25 AM	#8
DesertRider Join Date: Apr 2009 Location: Desert of Eastern WA Posts: 99	when I first opened up and started my Zong, it ran just how you described it, until I moved the C-clip in the carb, Ran perfect and throttle response was what it should be. Fixed mine, just a thought ? What is your elevation as well ? __________________ EX: Zong owner
	0

08-02-2009, 10:29 PM	#9
tconners Join Date: Jul 2009 Posts: 13	Sorry been in the hospital Sorry been in the hospital. Anyway nice white lean looking plug! Wasnt there a link about moving the c-clip somewhere? Oh DesertRider im in issaquah wa ;-) WHere exactly are you? Would be cool to meet up and talk dual sport. ALT: close to sea level. Also what about a louder pipe for saftey without a jet change? Anyone have luck with that? Or cutting open and moding the stock pipe? I have a plasma and mig so Im not scared! :twisted:
	0

07-25-2009, 01:23 AM	#2
tconners Join Date: Jul 2009 Posts: 13	Also jet type and size recommendations are welcome! Please! :roll:
	0

07-25-2009, 03:48 PM	#4
dwholler Join Date: Jun 2009 Posts: 56	double check your throttle and choke cable routing. i had an issue where the fuel filter was binding up on the C shaped cable guide on the carb
	0

07-25-2009, 09:15 PM	#5
dwholler Join Date: Jun 2009 Posts: 56	also another thing... this may sound silly.. but remember the choke is OFF when its switched toward you... I made that easy mistake because the idle was not adjusted correctly when i bought the bike. The easiest way is to get the bike warmed up, switch the choke toward you (OFF) and it should idle at a nice smooth low idle. If it revs when the choke is in the off position the idle needs adjusted down. When the choke is turned on when the bike is warm, the bike will die.
	0

07-25-2009, 10:59 PM	#6
TheRealWorld Join Date: Jun 2008 Posts: 817	This is most likely fuel, so check all the basics. If there is any chance that you got some bad fuel, check your filter. Make sure you have enough gas in the tank. Look for a kink in the fuel line. Make sure you have no water in the small bowel on the gas valve. Make sure you have some type of vent on your fuel tank.
	0

08-02-2009, 10:34 PM	#10
tconners Join Date: Jul 2009 Posts: 13	Also already upgraded fuel lines and filter as well as checking all cable routes.
	0

08-03-2009, 01:22 PM	#11
DesertRider Join Date: Apr 2009 Location: Desert of Eastern WA Posts: 99	I recommend moving the C-clip, your elevation is not far off from mine, it will make the world of difference in how it run's. A real white plug, you are obviously running too lean, need more fuel. Check my build up -->http://www.chinariders.net/modules.p...ewtopic&t=8058 I have added a FMF exhaust, and it is the best mod I have done to date. I don't think you will be able to get away without re-jetting though, opening up the exhaust more will cause it to run leaner yet, so you have to add more fuel to counter what you have done, it is VERY EASY though. __________________ EX: Zong owner
	0

08-04-2009, 06:26 PM	#12
tconners Join Date: Jul 2009 Posts: 13	Thanks, already read your mods and the pipe and jets are on the way. I wil document here in this thread. Thanks man. ;-)
	0

08-04-2009, 06:40 PM	#13
tconners Join Date: Jul 2009 Posts: 13	Oh and DesertRider You suck! As I know all the awsome places you have to ride in the ease. Im jelious! :P
	0

08-04-2009, 07:23 PM	#14
FastDoc Join Date: Mar 2009 Location: Southeastern Washington desert Posts: 14,761	a) We DO have it awesome in the desert up here. b) It's been over 100 degrees for about 10 days now. c) It's a 'dry heat' FWIW :roll: __________________ Happy to serve.
	0

08-26-2009, 09:52 PM	#15
tconners Join Date: Jul 2009 Posts: 13	So now I am up to a 140 jet and have a nice hearshey bar looking brown plug. But still have some ping's at high rpm's. "137 was still a little grey on the plug, so the 140" Ordering a pipe asap I think I need more taper in the end of the metering rod as well. If anyone has the FMF jet kit with rods ping me and I would like to buy a few rods to play with. Going to 142 "stock yamaha jet for this clone's yamaha counterpart" next after pipe change. 8O
	0