What is the small cylinder thing on top of the engine?
11-11-2011, 07:25 PM
#1
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What is the small cylinder thing on top of the engine?
It's the 3.0L. I broke the tiny plastic hose connected to it from under.
Here comes the pic. Thanks.
Here comes the pic. Thanks.
Last edited by a4avant99; 11-12-2011 at 12:09 PM.
11-12-2011, 09:41 AM
#3
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If it's about 3" in diameter with a a couple of 1/2" pipes connected to it it's a PCV valve...this is off a 4.2 but...
11-12-2011, 04:06 PM
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Where the hose under it is connected to? I was unable pull it out due to the fear of breaking it. I will replace the hose if not that difficult to reach. Now it is reconnected, but not firm enough (the wider tip was broken off, so I put the narrower part into the flex hose between the regulator and the plastic hose).
11-12-2011, 05:03 PM
#6
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The bottom hose goes back to the fuel tank...it's the return hose that bleeds off the pressure in the fuel rail.
11-14-2011, 03:24 AM
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11-14-2011, 05:16 AM
#9
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It's a Positive Crankcase Ventilation valve....it meters crankcase fumes into the engine for recycling. I tore mine apart, couldn't find anything wrong with it, lengthened the spring which quieted it down somewhat, then gave up and put in a new one.
New one didn't make any noise.
Shop around for best price.
New one didn't make any noise.
Shop around for best price.
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