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 Post subject: misfire problem
PostPosted: Sat Aug 13, 2011 7:29 pm 
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Joined: Fri Jul 29, 2011 8:29 pm
Posts: 1
Hey guys, My luv misfires or skips a little under accelleration but will come out of it easily and the engine still pulls under load. The bigger problem is when the headlights are on it skips under load almost all the time. when headlights are off problem goes away. At least back to previous condition. Idle is smooth and stready. misses if throttle snapped. plugs wires, points new.
any ideas


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 Post subject: Re: misfire problem
PostPosted: Sat Aug 13, 2011 11:42 pm 
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Joined: Sat May 11, 2002 3:47 pm
Posts: 3467
Location: Sand Bernardino, CA
Check the battery voltage with the truck off, then at idle, then while revving the engine. You may need a battery, or maybe your alternator isn't keeping up? If those check OK, could be a loose connection somewhere.


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 Post subject: Re: misfire problem
PostPosted: Sun Aug 14, 2011 8:12 am 
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Joined: Wed Apr 12, 2006 2:24 pm
Posts: 2143
Location: Hermiston,Oregon
I confirm what Ben said as you definitely have an electrical problem. What is happening in your case is you are loosing voltage to your coil.

This could also be your coil,resister,battery connection/voltage,alternator. As Ben suggested start at the battery then alt. then work your way to the coil.

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1978 pro street step/side 455Buick, 4sp,4.11s, 31/18.5s


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