Question about 1966 Ford Mustang

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66' 289 4v mustang

Hi, just rebuilt the whole motor bored it .30, new stock cam, valve job, edelbrock,intake, carb. everything new but old points distirbutor. ran really rough. so i ordered new msd distrib, and ignition w/ new coil, but before i installed new ignition , i found huge vacum leak( one of the intake bolts broke off, maybe causing it to run rough). so i extracted the bolt replaced it with new bolt , put in new distrib and ignition. now it runs really rough tried everything. checked wires, firing order, 180 out. please help. thomas

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  • THOMAS289 Dec 29, 2008

    Thanks for responding, yes i have had it running for a total of maybe two hours, with the vacum leak. before the new distrib.I talked to some people about it they seem to think it is 180 out or maybe just a couple of teeth. they told me to take out the number 1 plug, put my finger over it to find the compression stroke.have not tried this yet but, i dont see how that would make a difference.i put the balancer on TDC should be the same thing.

  • THOMAS289 Feb 22, 2009

    Found the problem, i took it to a mechanic. and along with it being out of time, the valve lash was not set properly. thanks for all your responses.

  • did you break in the cam is it new start the car and raise the idle to 2000 rpm for twenty minutes

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Just a thought, here. If you are using the original damper pully, the rubber cushion may be breaking down due to age. That problem has been known to drive people up a wall.
Cheers!
Ron

Posted on Feb 20, 2009

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Pull number 1 up go from there see which way rotor button is pointing match wires according

Posted on Dec 31, 2008

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