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Rough Idle when Cold Help (video)

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Old Mar 27, 2010 | 10:10 AM
  #16  
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Thanks. Time for a tach I guess.
 
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Old Mar 27, 2010 | 10:22 AM
  #17  
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Adjust the idle speed after you get the new idle mixtures in, otherwise you're going to do that twice.

Indeed, you have a major vac leak.

How to Use and Interpret a Vacuum Gauge This should help you interpret vacuum readings.
 
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Old Mar 27, 2010 | 10:34 AM
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Originally Posted by Jermafenser
Adjust the idle speed after you get the new idle mixtures in, otherwise you're going to do that twice.

Indeed, you have a major vac leak.

How to Use and Interpret a Vacuum Gauge This should help you interpret vacuum readings.
Thanks. Is it typical to have less vacuum on a cold engine?
 
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Old Mar 28, 2010 | 06:59 AM
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Originally Posted by berry1234
Thanks. Is it typical to have less vacuum on a cold engine?
Vacuum should be consistent regardless of engine temperature, but it's usually better to diagnose a warm engine.
 
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