Question about 1989 Ford Thunderbird

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Car won't pass emissions in idle

Just bought a thunderbird 1989 70k miles for 700$. I took my Car to test for emissions and it failed at Idle. I put in new spark plugs and noticed that the #5 plug was not working. The distributer cap works and so does the wire. I also noticed that there was a high pitch noise coming from the block. I checked everything exterior i could for leaks and couldn't find any. Could the sound be related to why the plug isn't working? What do i do to fix it?

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  • scott May 11, 2010

    Whats the engine in it?..3.8 or 5.0?

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  • 74 Answers

Have a comp test done on the #5 see if piston and valves are still good

Posted on May 31, 2009

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Posted on Jan 02, 2017

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