HS2 - Carb Issue

[pakiwi]

I have a 73 MG Midget 1275,
I recently changed the headgasket and had the car up and running. I was going to clean the Carb when I had it, but I never got around to it. I decided to clean it after I had it in with a degreaser, which did an ok job. Before I did this it had quite a bit of residue on it, but seemed to be working ok. The one thing I did notice was the accelerator arm does not return all of the time. My first thought was maybe springs to return them as I am guessing they are 35 years old. I have an email in to Joe to get the 3 return springs. Last night I was out the car felt like it was running on 3 cylinders, but after looking at the arm connector, this had not returned all of the way. The springs don't seem that strong, so I am wondering if there are other things I should look at. Also, should I take the Carbs off and clean them and get them rebuilt as I would guess they have never been touched in 35 years, though the car has only done 18,000 miles.
Thanks
allan

 

[Dadandson]

The "Three Cylinder" running is probably the float jets. I had a similar symptom and it turned out to be the gross jet valve that fills the bowls was stuck closed. Check these jets and maybe a good cleaning will do it. If not replace them with the viton tipped jets. I personally do not like the gross jet ball style jets though some people do. That should do the trick. As a side note, make sure the ignition system is working. Sometimes that can cause what seem like carb issues.

 

[Luke_Healey]

Yeah, my most recent 'not running on all cylinders' problem was because the needle in the float bowl on the rear carb was stuck shut, and there was no gas getting to that carburetor.

 

[Jim_Gruber]

And mine that I thought was fuel turned out to be a loose ignition wire that had vibrated loose on the coil. Rotors are always suspect. The ones from Advanced Distributors are the way to go. NFI of course.