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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Skips at acceleration

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Old Apr 3, 2016 | 02:23 AM
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Grantt Banks
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Skips at acceleration
My 1989 ford f150.
351 windsor, seems to idle just a little ruff, then when you place in gear (auto),it's shakes slightly more.
What should I look for?
 
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Old Apr 3, 2016 | 09:47 AM
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Do a compression test on all cylinders and closely examine all the plugs as you remove them, you're looking for color to determine if you have a single cylinder running lean(dirty injector) or all cylinders lean(sensor problem), or a mechanical problem(1 cyl with low CR).
 
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