blue smoke pcv cel??

[jdmrex2416]

whats up guys i have an 05 wrx w/02 motor....i blew my last motor and ended up buying an 02 motor with 49k miles. my plan was to swap it, make sure everything was working smoothly then sell it. well right after the swap everything was running perfect except for a pcv cel (positive crankcase ventilation valve [blow-by] function problem). now after two weeks with this motor i notice a small blue puff of smoke after i take off. anytime i sit at idle its clean untill i give it a rev, then another blue puff comes out. i have not lost any coolant or oil. i think i might have overfilled it with oil but not by much and i also replaced the pcv valve and the cel is still there i reflashed the ecu and the cel returns 3 seconds after it turns over. any help is appreciated.

mods:
stage 2 cobb ap
tbe-catless
aps bov 50/50

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[Sirlight]

Before you installed this second PCV valve, did it click back and forth when shook ? If not that valve may be stuck as well. Was the second PCV valve purchased brand new ?

How long was this motor sitting before you ran it ? Have you done a leak down/ compression test ?

Check the PCV valve again as it is the cheapest / easiest solution.

Another possibility is that the valve seals are gone. Do compression / leak to narrow it down if PCV is OK.

[jdmrex2416]

the motor was sitting for about 7 months before i ran it. the pcv was brand new and even the old one was working perfect before i replaced it. how much is it usually to get a compression/leak down test? where can i get one done??

[Sirlight]

any local decent auto mechanic should be able to do these. Go to someone you or your family trusts and that you know does good work. I would opt to go to a Subaru specialist shop personally. Have them give you a quote for a leak down test.

A leak down test involves attaching a fitting to the spark plug hole, then filling the compression chamber with compressed air to see if it escapes the system ( via rings, valve seals, headgaskets etc ). where air can escape, oil can escape. A good shop should also be able to tell you where it is leaking from if it is.

The only thing that seems kinda odd is that the PCV cel is on.

[jdmrex2416]

alright after lots and lots of research i figured out why i am getting the code:

the 04-05 motor has a sensor on the turbo inlet from the pcv and the 02-03 does not. since im running an 04-05 ecu and 02-03 motor the computer believes the sensor is unplugged therefor the cel. now i know there has to be some way to get passed this. i need an electrician gurus help. please ive searched so much and found nothing!!!! this is "NASIOC" everything is solved here!!!! i want this thread to have the solution to this!!!!!

please guys i suck with wires and electric work or i would be trying to figure it out myself! i know someone in the subaru world can figure it out!

thanks in advance

jake

[Sirlight]

Find out what the normal output of the sensor is supposed to be and solder together a resistor with the correct normal operational voltage. Get the pinout of the clip as well so you know where power and ground are, and find some pins to make your own sensor dummy or just solder it inline. I dont see why that woulden't work. Similar to the O2 sensor fix.

[jdmrex2416]

thats exactly what i DONT know how to do. i know what a resistor is and thats about it....im telling you i really dont understand wires and electricity... can you repeat in a little more "noobish" manner? haha

[jdmrex2416]

wait, better idea...how much would you charge me to make me a "dummy sensor"??

[jdmrex2416]

Bump still trying to figure this out. Is there any way I can buy the sensor that is supposed to be there, wire it in somehow and then trick it into thinking that it's plugged in and working??

[jdmrex2416]

anyone????

[indytruckboy]

you can remove any CEL with good EM