Question about 1990 Ford Thunderbird

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I have a 1990 thunderbird sc just rebuilt eng idles rough & misfi

I have a 1990 thunderbird sc we just rebuilt the engine had the heads ported pollished the heads were port matched to the intake everything is new but i cant seem to get the timing right it missfires and idles rough

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Recheck firing order diagram you are using some are incorrect . verify coil and spark plug wires are correctly wired.see link
http://autorepair.about.com/library/firing_orders/bl-fo-9847.htm

Posted on Apr 25, 2010

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88 thunderbird white smoke and water coming from tail pipe


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Rough Idle


i would crank the car when it starts reving up and down take a tool of your choice depending on the position of AIC and while acting up firmly tap on it for a few seconds and while you're doing that listen for the enging to change what it's doing.sometimes you can tap on them and get lucky.but if the enging clears up or gets worse when you tap on it you've pin pointed your problem for sure. hope i helped..

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Need a service manual for my 1990 Ford Thunderbird SC


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