Hummer H3 For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.

Oil leak.. PCV hose?

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  #1  
Old 12-01-2019 | 02:25 AM
Tram's Avatar
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Default Oil leak.. PCV hose?

So, I've had a leak I've been trying to run down and this past week was able to find where I think it's coming from. I've got oil on the rear of my intake, near the rear coil packs. I also noticed the PCV hose was crushed and deteriorating and was not installed properly. It was smashed between the PCV vent and the resonator rather than over it.

So, I'm thinking possibly this could be where the oil is coming from?

I thought the PCV was supposed to pull air from the resonator, to prevent pressure build up, not blow back into the resonator though?

Would this be possible to be getting oil from the PCV vent?
 
  #2  
Old 12-01-2019 | 04:31 AM
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From: Lewes Delaware
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PCV Positive Crankcase Ventilation in your case has been compromised by being crushed. It is the source of your problem. What you are finding is the blow back from the failure of proper ventilation.

Replace or repair the hose and your problem should go away.
 
  #3  
Old 12-01-2019 | 06:08 AM
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Originally Posted by wpage
PCV Positive Crankcase Ventilation in your case has been compromised by being crushed. It is the source of your problem. What you are finding is the blow back from the failure of proper ventilation.

Replace or repair the hose and your problem should go away.
Kinda what I was thinking. Thanks for the reply.
 
  #4  
Old 12-02-2019 | 03:14 PM
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Buy a new piece of 1/2" emission hose and cut it to length and replace the old hose to resolve your issue.
 
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