Got it fired up today!!!!!!!!!!!!!!!(MORE)

[Anonymous]

Finally, after 2 months of sitting, the old stang is running again! (Almost...) I still have to play around with the carb some more and get it idling better but so far I am pleased!

That leads me to a question, what is the float level adjustment measurement for a carter YF? I have no Idea as to where it is adjusted at the moment but I am going to tear into it tomorrow to see where I am at. I would just like to know a number to shoot for!

Thanks,
Paul

 

[Anonymous]

If I get the chance, I'll run out to the shop and look it up for you tomorrow!!

Later,

Doug

 

[Anonymous]

Today, I started it up and it would run, but would have heavy surging at idle and at speed. So I hooked up a vac gauge and it idled smooth. This was all done through the PCV valve hose.

My question is, am I correct in having the pcv hose hooked to the port on the log directly under the carb?

Another puzzeling thing i noticed was that when I applied more choke(after it had warmed up) the motor sped up.

Sorry for the questions but I have not played with carbs that much.

Thanks guys!

Paul

 

[mugsy]

More choke raises the vacuum in the venturi/carb, which will pull in more fuel. Sounds like your surging is casue by being too lean; so it could be low float, idle adjustment out of wack or plugged idle circuit. Basically you have added more fuel to your engine and it runs higher/better.

 

[kirkallen143]

On the bronco, when I rebuilt the YF-1 Carter, the float-level said to be 3/8" with the carb top inverted (with the float underneath) and that is with the float flange just touching the needle and not engaging the set spring (little spring loaded pin on top of needle). I did this and whammo, gas coming out of the top vent, so I lowered it and it stopped. Now I found out, if on any incline the engine gets starved of fuel, so up again with the float (it is easily done, only 6 or 7 screws on top, disconnect fuel and lift off). Haven't tried any inclines yet, but will this weekend and will let you know how things go. Maybe the float was stuck open in the first place at the suggested setting? It could of happened knowing my luck.

Kirk Allen Jorden ' 73 bronco

 

[Anonymous]

Well, I cured the surging. It was a vac leak under the carb base but it still does not want to idle correctly. If I give it choke still, it will rev higher and smoother. If I open the choke up all the way, I have to increase the idle RPMs to keep it running. One thing now that has me confused, is the idle mixture screw has no effect on how it runs. Turn it all the way in, no change. Back it all the way out, still no change...? This happened when I had the vac leak too so....? I don't know. The carb was rebuilt. It looked very very clean, if that means anything. Right now I am using the stock large jet that came with it but I have tried 2 smaller ones with little change. Mustang Geezer (Doug) said that he needed to drill a 1/16" hole in the throttle baseplate to get his to idle right. Maybe I need to do that? What effect would that have on it?

Thanks for all your help. I really want to get my car running again!

Thanks again,
Paul

 

[Anonymous]

Well, I have concluded that I do not have the right setup for this carb. I went back to the Autolite and idles fine and runs ok. But now I want to find a Carter YF off of a 200 or 250. Anyone have one? The car reved so much better with the larger carb but didn't idle at all. Now I can Idle great but don't have the top end as the 300. Now to try a 250.

Later,
Paul