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Thread: 1969 mercury marquis
          
   
   

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  1. 08-23-2010 10:14 PM #1
    mercury69
    mercury69 is offline Registered User
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    1969 mercury marquis

     



    Does anyone have any ideas i have a 1969 mercury marquis 429 engine,i have replaced coil,distributor,altenater,voltage regulator,wires,plugs,fuelpump,the car runs great for 15 minutes then backfires and wont start again till its cold any ideas
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  3. 08-23-2010 10:45 PM #2
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    Dsprint2000
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    Car Year, Make, Model: 1936 Ford PU
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    Vapor lock?

    David
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  4. 08-23-2010 10:47 PM #3
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    TooMany2count
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    Did you put new points & condenser in it???

    Could be a bad condenser...joe

    But also.........

    From THIS PAGE
    Prior to 1972, Ford used dual-point, mechanical-advance distributors in high-performance applications like the 390, 406, and 427 High Performance, the 289 High Performance, the Boss 302, 351, and 429 V-8s. In earlier applications like the 289, 390, 406, and 427 High Performance V-8s, the C5OZ-12127-E dual-point distributor was a mechanical-advance only for high-RPM use.
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  5. 08-24-2010 06:34 PM #4
    hotrodstude
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    Car Year, Make, Model: 2006,ford,f-150,v-6,5-speed manual
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    dose it backfire when you are running down the road or while idling???how about the fuel filter???2 or 4 barrel carb???
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