Cdr
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Elder User
Joined: Sep 2007
Posts: 518
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From: Huntsville, TX
Cdr
I know I have a bunch of topics, but this is my first truck, let alone my first diesel. That said I have another stupid question, where is the CDR valve and what does i do?
Senior User
Joined: Apr 2007
Posts: 315
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From: Conway, AR
It allows blowby gasses to be drawn into the intake manifold to be burned in the engine at lower engine speeds to keep them from venting into the atmosphere, at higher RPMS, the vacuum of the engine closes the valve to prevent excess oil vapour from being drawn into the intake causing a runaway.
If the diaphram is torn or sludged up where it stays open at high RPMs, it can cause excess oil consumption.
----------Robert
If the diaphram is torn or sludged up where it stays open at high RPMs, it can cause excess oil consumption.
----------Robert
Senior User
Joined: Nov 2007
Posts: 334
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From: McFarland, WI
Also, It should be cleaned everyother oil change. I just cleaned mine and I dont get the nice film of oil in my intake anymore. Youll be amazed at how much crud comes out of that tiny little tuna can
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