Walbro carb help    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version


RCexl ignition for most any engine
Seller:  BadAzzMaxx
Details:   $54.95   |  4/26/2013   |  Classified Ad
We will rotate YOUR AD in this spot if you select "Forum Featured" when placing or editing your ad!

All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Conversions >> Walbro carb help
Page: [1]

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
Walbro carb help - 11/9/2003 4:48 AM   
zipnsplat


 

Posts: 87
Score: 100
Joined: 10/7/2002
Last Login: 7/14/2012
From: Youngsville, NC, USA
Status: offline 		Hello all,

I just finished my first gas conversion tonight. This is also my first experience with gas engines as well. I converted a homelite 25cc engine and put a Walbro carb on it. Well, when I fire it up it will die unless I hold my thumb over the velocity stack. This to me says that the engine is not getting enough fuel, but it dies no matter how rich/lean I have it. Any ideas? I removed the butterfly choke from the carb. Do I now need to plug the holes in the carb where the choke was? Also, the carb has 2 nipples. 1 for fuel, and one that feeds back into the tank. how can I make sure that I don't have them reversed? Thanks for the help.

-Zip

< Message edited by zipnsplat -- 11/9/2003 11:15:13 PM >

Hide Signatures
       Post #: 1

RE: Walbro WT433 help - 11/9/2003 6:06 AM   
w8ye



Posts: 36438
Score: 318
Joined: 12/11/2001
Last Login: 5/24/2013
From: Shelby, OH, USA
Status: offline 		The needle valves ae closer to the side that goes back to the tank.

Unless you have one of those little thumb pumps in the circuit, You better just plug the return so it will not suck air.

It sounds as though your impulse circuit from your crank case to the pump side of the carb is blocked some way?

http://wem.walbro.com/walbro/product2.asp?Series=WT&partnum=WT%2D433%2D1

Jim

< Message edited by w8ye -- 11/8/2003 11:38:30 PM >

_____________________________

Attended the CutFinger Institute of DirtNap University for years but never did graduate....
Recipient, Mangledhand award August 2008
Club Saito Member #7
Original AMA #31261

Hide Signatures

(in reply to zipnsplat)
       Post #: 2

RE: Walbro WT433 help - 11/9/2003 9:53 AM   
mikenlapaz



Posts: 1986
Score: 100
Joined: 12/7/2002
Last Login: 2/26/2013
From: La Paz BCS, MEXICO
Status: offline 		Or maybe there is a small air leak in the fuel connections coming FROM the tank.

(Unkowingly I bought Large fuel line first time and even with hose clamps the Tygon seems to fit loose, seems like the 3/32" , medium might be better on runs under 12". Any comments.

Restriction/kink in fuel line would starve the engine also.

< Message edited by mikenlapaz -- 11/9/2003 2:00:38 AM >

_____________________________

trying to tax into prosperity is like a man standing in a bucket and trying to lift himself up by the handle W. Churchill

Hide Signatures

(in reply to w8ye)
       Post #: 3

RE: Walbro WT433 help - 11/9/2003 7:57 PM   
Antique



Posts: 9825
Score: 557
Joined: 7/14/2002
Last Login: 3/21/2012
From: Somewhere, DC, USA
Status: offline 		Tygon is not the best fuel line..There is no reason to use anything larger than the small neoprene fuel line on any gasser..I run engines up to 150cc on Hayes products molded neoprene fuel line..No clamps needed, does not get stiff, works well for clunks in the fuel tank...The inside diameter is about 3/32..
I get it from Custom Injection in Garden Grove, Cal...714 554 0531...

Hide Signatures

(in reply to mikenlapaz)
       Post #: 4

Page:   [1]
All Forums >> Glow Engines, Gas Engines, Fuel &amp; Mfg Support Forums >> Engine Conversions >> Walbro carb help
Page: [1]





Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


0.250RCU1