I have a2002 fORD F150.4.2 motor.As a rule it runs fine,but on 2 occasions it has fail to start.After it sits awhile it will start .Checked gas and looked under th hood.Saw nothing wrong.

Asked by Aug 11, 2016 at 05:54 PM about the 2002 Ford F-150 XL 4WD LB

Question type: Maintenance & Repair

As a rule the truck runs fine .On 2 occasions it has failed to start.It cranks,but
wiil not start.It has been suggested that it may be vapor lock.I,ve never had this
problem before so I am at aa loss.Please help

1 Answer

105

Vapor lock usually only occurs on hot days to vehicles that are themselves hot. Also, fuel injected cars are (i think) largely immune to this thanks to constant system pressure. Since it is a 2002 with many complex mechanical and electronic systems, it would be impossible to tell what's going on without more information- I suggest you take it to a garage and have a mechanic do a run through.

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