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Old 08-22-2014, 02:00 PM   #67 (permalink)
Mitco39
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Location: Edmonton Alberta Canada
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Quote:
Originally Posted by jwick View Post
I hear you! Other than us providing alternate data points you are the driver of what's going on in the progress of a solution My man!

Question - Can you route the PCV back into the intake tubes? The only reason I ask this is because the GTM TT kit has them routed in the air filter tubes pre-turbo. From the experience I have with those kits, they aren't having the issues we are.

That being said, I don't know how we do that since the filter is clamped directly to the compressor inlet.

I'm definitely down for a solution. I'd happily tap my intake piping for the PCV system if it'll take care of the hiccup.
Just looking at the service manual now... It has 2 crankcase ventilation systems working together. Im not sure if my idea of putting it into the intake would be sufficient. Right now I bet the car is drawing unmetered air in through the lets call it primary ventilation circuit through the intake manifold. Now with the secondary ventilation circuit to atmosphere one could assume that its sucking air in through this secondary vent circuit into the crankcase then out through the PCV valve and into the intake manifold. Ill find a picture and post it up explaining that.

This would allow unmetered air to make its way into the engine, although when a engine idling it is supposed to be in closed loop which shouldn't affect its operation to much, however if the vacuum pressure in the manifold is changing slightly it would change the combustion process enough that could cause the hunt as it continually tries to stabilize itself.

I like thinking problems, lol.
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