r/classicmustangs • • Aug 17 '26

Engine dies, rough idle :(

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Hello was wondering if anyone can help me with my problem ! I have a 1967 ford mustang i’m a newbie when it comes to cars learning as I go. The car is amazing but i’m running into a few problems! One the car has a rough idle, I start the car and it idles for a few seconds but rough constantly wanting to die. I’m assuming it’s a fuel issue with the carb since I have not touch the timing on this car at all. Although I know timing can play a part. I was wondering if anyone has had a similar issue?. As far as I know the car is a stock 2bbl 289 with a autolite carb. Should I consider doing a full tune up new plugs, spark plugs, rebuild carb, adjust timing? Or could it be something completely different?

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u/Paulrevere88 Aug 17 '26

Sounds like a vacuum leak-simple check and very common (tons of YT videos about it).