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dmoore
dmoore 12/15/2012
2006 Lincoln Navigator Luxury 8Cyl5.4L - Preventive Maintenance
my ignition misfires diagnoses says vacuum leak how to fix the problem
1 Answer
  • Jimm
    Jimm 12/15/2012
    Use a handheld vacuum tool (such as a MityVac) to apply a vacuum to the different hoses - to find the leak. Often, simply wiggling / moving the hoses one-at-a-time can cause the crack or leak to come and go - then you have located the problem. Simply replace the specifc vacuum hose.
    Also, check the intake air boot and hose system on top the engine - these can develop small cracks over time.
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