I just put a new carb on my 360fe (Autoline= 2100 motorcraft) and can't figure out the fast idle setting on the choke. I know, how sad is that, such a simple design but its kicking my butt Even though its summer out right now with the cold spell its getting down in the low 60's at night. I've always wanted to get the truck set where I could push the gas pedal down once and have the truck start and warm up for me so I wouldn't have to sit in a cold truck and jack with the throttle for 5 minutes just to get it to idle in the winter.

This is how I've try to adjust the fast idle so far. With a cold engine off turn the choke thermostat back until the choke is almost closed just enough space to let some air get threw. Then try to turn the screw on the back of choke to set the throttle to a fast idle about 1200 rpm when engine starts. The problem is the truck wont start unless I pump the gas a couple times and give it a few blips of throttle after start to get it going. By that time the fast idle has already released itself and I'm back on normal hot idle. What am I over looking guys? Truck seems to be alittle cold natured and acts like it needs alittle choke for the first few minutes of start up.

 

The fast idle adjustment screw rides on a cam. When you push throttle to floor choke closes and the cam rotates and engages the fast idle. The cam should stay rotated until the engine heats and the choke opens. Then when you punch it the cam drops and you go back to normal idle. As long as you're still choked you should be able to pump the peddal and not affect the fast idle.

 

march's description is 100% accurate. Please read the following description with regard to setting up the fast idle linkage:

https://www.ford-trucks.com/forums/7...ml#post6422219

 

Thanks for posting. I read it over a couple times and prolly will reread again before I tune on it again. My choke is a hot air choke. Would there be any different steps I need to know or over look?

 

No, the fast idle mechanism is independent of the heat source(s) used to open the choke.

 

fmc400, could you look at my problem? I know it's a different setup but I'm totally stumped!!

I put a video over in the carb/fuel board. I haven't gotten the help that I need, though.

https://www.ford-trucks.com/forums/1...t-setting.html

 

In you post you linked you mentioned a pull off behind the choke thermostat mine dosent have that. Didn't know if the steps you listed would matter.

 

If yours doesnt have the pull off behind the choke thermostat then its on top of the carb behind the air horn.

Just to add a pic.
Where this says choke diaphragm, thats the pull off.

 

A 2100-series carburetor should have the choke pulloff mounted vertically, behind the throat of the carburetor. A 2150-series carburetor should have the pulloff mounted horizontally, on the passenger side of the carburetor. The concept is the same in either case. The pulloff is a crucial piece of setting up the carburetor properly.

 

One very big problem I see is there has been no mention of what kind of transmission he has.
Or I missed it.
Moore31 do you have the AOD transmission?
If you do there will be some problems with carb selection.

 

Don't know why I thought this was a recent post.....