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Old 10-14-2009, 03:51 AM
glc glc is offline
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Join Date: Dec 2006
Location: Joplin MO
Vehicle: 2003 Ford F150
Posts: 10,333
If it goes into the head, then I'd assume its air in head. If it's air in manifold, there will probably be fittings and pipes coming off the manifold.
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2003 F150XL 4.2 short cab/bed 4x2 5 speed manual 3.55 LS
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