New Walbro Carb Problem - PocketBikeForum.com

WPG Racer · 06-20-2006, 05:34 PM

OK i just installed a new walbro carb, black widow reeds, new vilocity stack, and a new air filter. I tried adjusting the two carb screws to hours and i tried everything possible. When i accelerate, just off the start, my engine goes to full rpm and then it just quits! I'v tried adjusting the carb loads of times and im sure i'v tried every possible way to adjust it. Can anyone tell me whats going wrong?

inthelead83 · 06-20-2006, 05:56 PM

u need a jet kit.

WPG Racer · 06-20-2006, 06:01 PM

umm didnt the carb already come with jets? where can i get a jet kit? can install it myself?

inthelead83 · 06-20-2006, 06:20 PM

the carb came with jets but you need different sized ones. you can pick it up from huckster and sleeves, and you can do it yourself.

Admin · 06-20-2006, 06:46 PM

Sounds like too much fuel not enough air. Either adjust the carb accordingly or go to smaller jets.

What size of carb is this? Is it mostly a stock bike (other than the aforementioned parts)?

*Sleeves* · 06-20-2006, 07:13 PM

try 1.5 turns out on the low idle screw and 2 turns out on the high idle screw .......
this is a basic setting then go from there ,then i would adjust the high jet accordingly ! checking the plugthe whole time ! other wise give it a good cleaning !

WPG Racer · 06-21-2006, 03:17 PM

the walbro carb i have is the WT-603. Why cant the jets that came in the carb be used? why get new ones? i still have my old carburetor and the old jets are probebly still in it.

Admin · 06-21-2006, 03:59 PM

Shawn is thinking that the jets are too large and are allowing too much fuel in. Moving down to a smaller jet will solve this.

WPG Racer · 06-21-2006, 05:50 PM

is it possible to get more air in the engine so0 that it will even out the fuel going in?

Admin · 06-21-2006, 08:26 PM

Then you'd be looking at adding a blower. I don't think anyone has designed a blower for a pocketbike yet

06-20-2006, 05:34 PM	#1 (permalink)
WPG Racer Pocketbike Freak Join Date: Apr 2006 My Gallery Real Name: Yuri Pocketbikes Owned: 2 Location: Winnipeg, Manitoba Posts: 408	New Walbro Carb Problem OK i just installed a new walbro carb, black widow reeds, new vilocity stack, and a new air filter. I tried adjusting the two carb screws to hours and i tried everything possible. When i accelerate, just off the start, my engine goes to full rpm and then it just quits! I'v tried adjusting the carb loads of times and im sure i'v tried every possible way to adjust it. Can anyone tell me whats going wrong?

06-20-2006, 05:56 PM	#2 (permalink)
inthelead83 Pocketbike King Join Date: Nov 2005 My Gallery Real Name: Shawn Pocketbikes Owned: 5 Location: Pine Ridge Posts: 1,826	u need a jet kit. __________________ RCMRRA - Vice President Proud Owner of: Modded Blata b1 Origami, Blata Elite 11, & Moto-Vert www.rcpra.net 3rd Place overall in CCMRRS 50cc pocketbikes 3rd Place overall in CCMRRS Open Mini Motard

06-20-2006, 06:20 PM	#4 (permalink)
inthelead83 Pocketbike King Join Date: Nov 2005 My Gallery Real Name: Shawn Pocketbikes Owned: 5 Location: Pine Ridge Posts: 1,826	the carb came with jets but you need different sized ones. you can pick it up from huckster and sleeves, and you can do it yourself. __________________ RCMRRA - Vice President Proud Owner of: Modded Blata b1 Origami, Blata Elite 11, & Moto-Vert www.rcpra.net 3rd Place overall in CCMRRS 50cc pocketbikes 3rd Place overall in CCMRRS Open Mini Motard

06-20-2006, 07:13 PM	#6 (permalink)
Sleeves Pocketbike Dealer Join Date: Oct 2005 My Gallery Real Name: ??? Pocketbikes Owned: 2 Location: winnipeg Posts: 2,525	try 1.5 turns out on the low idle screw and 2 turns out on the high idle screw ....... this is a basic setting then go from there ,then i would adjust the high jet accordingly ! checking the plugthe whole time ! other wise give it a good cleaning ! __________________ TRC , Amra , Mra , Smra 06' P1 BMS competition BZM 15.5hp Open 50cc 08' CBR125r 96' Gsx-r 600 1st overall CCMRRS 08' PB Open 50 3rd place round 5 in Pitster Pro Nationals Stock 40

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06-20-2006, 06:01 PM	#3 (permalink)
WPG Racer Pocketbike Freak Join Date: Apr 2006 My Gallery Real Name: Yuri Pocketbikes Owned: 2 Location: Winnipeg, Manitoba Posts: 408	umm didnt the carb already come with jets? where can i get a jet kit? can install it myself?

06-21-2006, 03:17 PM	#7 (permalink)
WPG Racer Pocketbike Freak Join Date: Apr 2006 My Gallery Real Name: Yuri Pocketbikes Owned: 2 Location: Winnipeg, Manitoba Posts: 408	the walbro carb i have is the WT-603. Why cant the jets that came in the carb be used? why get new ones? i still have my old carburetor and the old jets are probebly still in it.

06-21-2006, 05:50 PM	#9 (permalink)
WPG Racer Pocketbike Freak Join Date: Apr 2006 My Gallery Real Name: Yuri Pocketbikes Owned: 2 Location: Winnipeg, Manitoba Posts: 408	is it possible to get more air in the engine so0 that it will even out the fuel going in?

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