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A large vacuum leak can do that.

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Q: Why does my 1981 Ford F-150 inline 6 surge when it tries to idle?
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What is the spark plug gap for a 1981 f150 with the inline 6?

.044 inch , according to fordparts.com


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What oil to use in a 1993 F150 Straight six?

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How do you Retrofit r12 to 134a in a 1992 f150 49 liter inline six?

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What makes my Ford F150 pickup motor surge when coming to astop?

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Did ford make a 402040 bench seat for the 1995 Ford F150 XL model with Inline 6 engine?

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Why won't 1989 f150 run on one tank when both have new pumps filter and inline pump works?

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