dmoore 12/15/2012

2006 Lincoln Navigator Luxury 8Cyl5.4L - Preventive Maintenance

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my ignition misfires diagnoses says vacuum leak how to fix the problem

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  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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