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Vacuum Leak

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Old Jan 20, 2014 | 08:54 PM
  #1  
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tatonka
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Vacuum Leak

Guys, I have a 91 ford f150 5.0 engine. engine idles about
1500 rpm. I think I found a vacuum leak at the diverter valve
behind the intake. would this cause the engine to idle high?
 
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Old Jan 21, 2014 | 02:43 PM
  #2  
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White Max
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From: Imperial, MO
Yes, a vacuum leak can cause a high idle.
 
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Old Jan 21, 2014 | 06:08 PM
  #3  
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tatonka
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that looks like a major job to change. if I take the smog pump off will that
fix the vacuum leak coming from the air diverter valve?
 
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Old Jan 21, 2014 | 06:14 PM
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rla2005
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Originally Posted by tatonka
that looks like a major job to change. if I take the smog pump off will that
fix the vacuum leak coming from the air diverter valve?
No it will not.
 
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