why will my mustang not idle

Mary Bennett

Asked by May 23, 2014 at 12:12 PM about the 1966 Ford Mustang Base

Question type: Maintenance & Repair

my 1966 inline 6 200 mustang will start rough, but will not idle. if you keep pumping the gas it will stay running if not it stalls. What is going on?

3 Answers


Sounds like the carb may need cleaning. How long has it set not being drivin?

1 out of 1 people think this is helpful.

As per our pm: Check for vacuum leaks. Older cars tend to do more setting in the garage than being drivin. How long had it been parked before you drove it to store? How old is the gas in it? If gas been in there for a month or more you probably fighting a condensation issue. Try adding some fuel cleaner to your gas if so. If gas older than that then I would remove all the gas from tank, clean the tank and then add new gas.

1 out of 1 people think this is helpful.

Also if it still has the old points style ignition might try filing them with an Emory board. Condensation plays hell on them too. If it does have old points ignition I would look into replacing them with the electronic ign conversion kit. They are fairly cheap and work great.

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