Question about 1966 Ford Mustang

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I have a 66 Mustang with a 289/2b, I cant get her to idle while in drive. If I shift to N or P she idles fine.

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Check your idle rpm in neutral with a tachometer. Should be 750 rpm if I remember correctly. Also, check timing. Retarded timing will cause this on a Ford V8. Disconnect and plug distributor vacuum advnce line, then with idle speed set properly, check timing. Can't recall the spec but you can find that in any tune up guide. c17hydro is correct that all vacuum lines and fittings should be checked for cracks and leaks, use some dish detergent around fittings. If idle changes, you've found a leak.

Posted on Jul 11, 2010

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Sounds as though you have a vacuum problem...check your hoses to and from the carb...

Posted on Jun 03, 2010

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1 Answer

My 66 mustang lopes up and down, I have to crank


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I have a 66 mustang 289 the problem is when I give it gas the engine shacks bad it idles grate and starts fast


VAC LEAK AT CARB GASKET OR LINE /PUMP IN CARB IF BEEN SETTING BUT LIKLY VAC PROBLEM

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