Mopar Muscle Association UK

Hi guys, got a strange problem on my 73 Challenger, it's worse when the car is first started from cold and gets a little better after about 5 minutes but still does it, when braking coming to a stop it will shut off, or stutter off then on again, although it doesn't do it everytime.

I know this may hint at it being brake servo/vacuum related but the strange thing is it has shut off before when driving when i've not even been on the brakes.

It always starts straight up again no problem.

I've replaced the ignition switch as that was being a bit temperamental and I hoped that's what is was but it's still happening.

Please see below for video, at the beginning you'll hear it keep stuttering off and on everytime I brake and at the end of the video you'll hear it completely shut off when I brake.

Another strange thing is that it doesn't do any of this when braking in reverse.

I appreciate any help or advice



Thanks guys

Float level too high? Shouldn't be difficult to trim down and find out if it makes it better.

When was the last time you looked at the carb? is the fuel old?
also vacuum lines are they in good shape?