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Repair guides and support for the seventh generation of Ford F-Series trucks. Models include the F100 (discontinued in 1983), F150, F250, F350, and others.

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Misfire on multiple cylinders

Getting a misfire on 2,5,7 cylinders. Got new heads,distributed new plugs wires don’t know what else to do.

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I would start by checking for a vacuum leak which can be done by starting the engine and while it is idling spray starting fluid around the Intake manifold on that side and then if the engine doesn't pick up when sprayed try spraying all over in different place on and around the engine (except the top of the carb) where vacuum lines appear to connect. WD-40 will work also.

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david wanner 将永远感激不已
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