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2000 blazer ZR2 how to you do a learn procedure?

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  #31  
Old 08-18-2012, 09:42 AM
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yea I thought so haha =P
 
  #32  
Old 08-18-2012, 03:44 PM
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checked spark, it has spark. check fuel. Has correct pressure but after 10 min it comes down to 48-52 ish.
 
  #33  
Old 08-18-2012, 04:43 PM
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What was your initial pressure?
 
  #34  
Old 08-18-2012, 07:27 PM
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did you do a leakdown by the filter too?
 
  #35  
Old 08-18-2012, 09:25 PM
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61-63ish.


no I did not.
 
  #36  
Old 08-18-2012, 09:36 PM
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its possible the pump is not holding pressure or you have a leak inside the intake.
 
  #37  
Old 08-18-2012, 10:23 PM
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Originally Posted by xgiovannix12
its possible the pump is not holding pressure or you have a leak inside the intake.
I am guessing it's in the intake. Pump has good pressure and is new so I doubt that is a issue. I don't believe the reg or injectors have either been changed so I think that would be the issue.
 
  #38  
Old 08-18-2012, 10:41 PM
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I agree david, you can look down the passenger side of the throttle body. Does it look really clean or show signs of washing? If so, it points to a bad fuel pressure regulator. How was your MPG?
 
  #39  
Old 08-18-2012, 11:36 PM
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Looked washed I would say. A decent about of carbon I could see down there though. imo, mpg was not good. I never drove it far but it was doing worse then it should have.
 

Last edited by david068513; 08-18-2012 at 11:47 PM.
  #40  
Old 08-18-2012, 11:50 PM
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The next step would be a closer visual inspection of the injectors and fuel pressure regulator. However, if you open the plenum be sure to have new gaskets! If the regulator is leaking it will be very obvious. The passenger side will be really clean looking. It should be dirty looking if its not leaking.
 


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