Thread: 4.2L codes P0171 and P0175
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Old 10-06-2009, 04:23 AM
075SpdSTX 075SpdSTX is offline
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Join Date: Oct 2008
Location: Texas
Vehicle: 2007 Ford F-150
Posts: 24
Vacuum Leak Check
Get a can of WD-40 and spray where you may have a possible leak. If the motor revs you've found the area of the leak. Then isolate the exact location.
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