NH Choke Circuit?

Topics Last Day Last Week Tree View    Getting Started Formatting Troubleshooting Program Credits    New Messages Keyword Search Contact Moderators Edit Profile Administration
Model T Ford Forum: Forum 2016: NH Choke Circuit?
Top of pagePrevious messageNext messageBottom of page Link to this message  By Philip Berg on Sunday, October 30, 2016 - 07:36 pm:

When the choke is closed on a NH carburetor does the fuel come from the main jet or is there another source of fuel?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Dan Treace, North FL on Tuesday, November 01, 2016 - 05:53 pm:

Phil

That choke plate when closed provides more suction from the cylinders as they rise and fall in starting. The air that is inside the air passage (A) in the carb at time of choke closing, is pulled over the puddle of fuel (G) at the spray nozzle and enriches the mixture heavily.

Fuel is sourced from the spray needle / nozzle, but is pulled by the tiny passages (D) & (E) exiting near the throttle plate.








The March-April 1925 Ford Service Bulletin has full details on overhauling the N-H carb.


Add a Message


This is a private posting area. Only registered users and moderators may post messages here.
Username:  
Password:

Topics Last Day Last Week Tree View    Getting Started Formatting Troubleshooting Program Credits    New Messages Keyword Search Contact Moderators Edit Profile Administration