2002 INFINITI Q45 ENGINE LIGHT ON

  • Tiny
  • jaems
  • 2002 Infiniti Q45

Engine Mechanical problem
2002 Infiniti Q45 V8 Two Wheel Drive Automatic 115000 miles

2 days ago the engine service light came on and I took it to auto zone for a free code reading it said there was a large vaccuum leak possible. How do I know where the vaccuums are and how many are there? Thanks for the great site

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Thursday, March 11th, 2010 AT 7:39 PM

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  • Tiny
  • legitimate007
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One trick that we use to figure this out is first try and listen carefully for a hissing or whistling sound, if nothing comes of that, then, take some brake kleen(thats how its spelled) and gently spray it around all the hoses and intake, if you hear a change in idol, then that is where your leak is. Concentrate mostly around the back side of the engine towards the firewall and the brake booster, you prbably have a partially connected hose thats causing the leak

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Thursday, March 11th, 2010 AT 8:42 PM

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