Electric choke
Thread Starter
|
Senior User
Joined: Oct 2005
Posts: 446
Likes: 1
From: Germany
Electric choke
Hey folks,
this isn't truck related, but the principal should be the same.
I bought a used ATV that has startup and idle problems. Get it started the first time and it's fine the rest of the day (just doesn't idle so good). I cleaned and adjusted the carb to get it as best as possible, but, as I couldn't find individual parts, it needs a new carb. The original carb costs more than I paid for the quad to begin with, so I ebayed it and found a new (rebuilt?) one for the same CC and inlet/outlet measurements.
The new carb has electric choke though, and I don't know how to hook it up.
It's got a plug w/ 3 wires (yellow, green, and green/black). The yellow and green go into the carb (choke) and the green/black has a female plug on it.
Does this sound familiar enough for someone to tell me how to make things work?
Thanks, Dave
this isn't truck related, but the principal should be the same.
I bought a used ATV that has startup and idle problems. Get it started the first time and it's fine the rest of the day (just doesn't idle so good). I cleaned and adjusted the carb to get it as best as possible, but, as I couldn't find individual parts, it needs a new carb. The original carb costs more than I paid for the quad to begin with, so I ebayed it and found a new (rebuilt?) one for the same CC and inlet/outlet measurements.
The new carb has electric choke though, and I don't know how to hook it up.
It's got a plug w/ 3 wires (yellow, green, and green/black). The yellow and green go into the carb (choke) and the green/black has a female plug on it.
Does this sound familiar enough for someone to tell me how to make things work?
Thanks, Dave
Thread Starter
|
Senior User
Joined: Oct 2005
Posts: 446
Likes: 1
From: Germany
Dave
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
ATV's, and motorcycles use CV(constant velocity) carburators, typically they have a butterfly that is operated by the throttle lever and a slide valve that is vacuum operated, this slide valve is attached to the main needle jet.
You need to figure out the brand and model number this carb, once you have that it shouldn't be too hard to find a manual for it.. either online or from a small engine distributor.
You need to figure out the brand and model number this carb, once you have that it shouldn't be too hard to find a manual for it.. either online or from a small engine distributor.
Post Fiend
Joined: Jan 2005
Posts: 8,402
Likes: 10
Done some research. Honda have a similar sounding system called a "bystarter". It, however, is only two wire. The Honda one heats the little needle and after about 10min the needle extends, blocking off the excess fuel. The resistance in the heater circuit should be about 4ohms, if that helps. It is possible that your carb has an extra wire for some sort of controller. The needle assembly can be removed from the Honda carb and connected across a 12v battery and after about 10min the needle can be seen to extend about 1/4in. Hope this helps.
Thread Starter
|
Senior User
Joined: Oct 2005
Posts: 446
Likes: 1
From: Germany
eBay Motors: Carburetor For ATV Quad Gokart Moped 250cc30mm(NO2 only (item 200255438285 end time Oct-13-08 03:04:35 PDT)
Of the 3 wires at the plug, 2 go inside the carb and one is extra.
Thanks, Dave
Trending Topics
Thread Starter
|
Senior User
Joined: Oct 2005
Posts: 446
Likes: 1
From: Germany
Done some research. Honda have a similar sounding system called a "bystarter". It, however, is only two wire. The Honda one heats the little needle and after about 10min the needle extends, blocking off the excess fuel. The resistance in the heater circuit should be about 4ohms, if that helps. It is possible that your carb has an extra wire for some sort of controller. The needle assembly can be removed from the Honda carb and connected across a 12v battery and after about 10min the needle can be seen to extend about 1/4in. Hope this helps.
the choke is automatically on (closed) and has to have voltage in order to open up? Or, am I being thick headed?
If it's as simple as hooking a hot to one wire and a ground to the other, I'm in there!!
Thanks, Dave
The quad is a Jainshe (China) but the parts are supposed to be Yamaha (Bear Tracker or Bruin).
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Post Fiend
Joined: Jan 2005
Posts: 8,402
Likes: 10
Yes on the Honda choke one wire to ground and one to 12v. The 12v have to be supplied at all times while the engine is running. The resistance of the heater for the choke should be around 4ohms so you could check that out by putting a mulit-meter across the two wires on your carb. Also, with a meter, check each of the two wires to see if either is grounded to the carb body.
As far as I can see the choke needle is in a housing with some wax. The wax is heated by the electric heater element. The wax slowly expands as the temperature rises and gradually pushes the needle out and so the fuel mixture is returned to normal running. Anyway do the electrical checks on your carb and take it from there. Good luck with it.
As far as I can see the choke needle is in a housing with some wax. The wax is heated by the electric heater element. The wax slowly expands as the temperature rises and gradually pushes the needle out and so the fuel mixture is returned to normal running. Anyway do the electrical checks on your carb and take it from there. Good luck with it.
Thread
Thread Starter
Forum
Replies
Last Post
73richards250
Audio & Video Systems, Navigation, Satellite Radio & Mobile Electronics
3
Dec 29, 2014 01:39 PM
250FordTruck
1999 - 2016 Super Duty
2
Apr 24, 2007 06:29 AM
BCRanger
Audio & Video Systems, Navigation, Satellite Radio & Mobile Electronics
5
Jun 10, 2005 11:07 AM