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7 Series - E38 (1995 - 2001)

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  #1  
Old 04-13-2011, 08:27 PM
nubmwman nubmwman is offline
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Mein Auto: 740 il
1999 740il - OSV?

where is the osv valve on a 1999 740 il-and also is there a pvc vale on a 1999 740 il
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  #2  
Old 04-13-2011, 09:00 PM
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joyism5 joyism5 is offline
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The OSV is on the driver side behind the timing chain, right under the cylinder head.
PVC valve? Can you be more specific?
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  #3  
Old 04-13-2011, 09:05 PM
nubmwman nubmwman is offline
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behind the timing chain? is that under the valve covers?---pcv valve is on american made older cars--
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  #4  
Old 04-13-2011, 09:14 PM
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joyism5 joyism5 is offline
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The PCVV (positive crankcase ventilation valve , AKA rear cover of the intake) #2 in the intake picture attached ,
the OSV (oil separator valve) # 1 in pic attached ,is behind the timing chain as described.
The pipe # 5 goes under the intake, if you will look down, under the intake, close to the throttle , you will see one end of it where connects to the OSV.

The PCCV is the one with the membrane that goes bad ussually.
What are your symptoms?
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Last edited by joyism5; 04-13-2011 at 09:18 PM.
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  #5  
Old 04-13-2011, 09:24 PM
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joyism5 joyism5 is offline
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Shopping suggestions :
use realOEM.com to find your part#
Shop on the net, you could use sponsor list or bimmerspecialist.com
PCVV buy OEM, Non OEM last around 2-3 months if you have badluck. I had and I changed 2 + the OEM. Replace all the O-rings and pipe from OSV to PCVV.
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  #6  
Old 04-14-2011, 06:29 AM
nubmwman nubmwman is offline
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blue smoke on startup---- just sometimes tho-----
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  #7  
Old 04-14-2011, 06:40 AM
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joyism5 joyism5 is offline
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Sounds like a bad PCVV. Around $ 100 parts and a nice afternoon.Or the worst case valves stem seals...
Good Luck!
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  #8  
Old 04-14-2011, 08:21 AM
nubmwman nubmwman is offline
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anyway u could darken up the pics. u sent cant seem to see them that good-checked the link someone sent me and dont see-or cant reconise the -pccv valve there
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  #9  
Old 04-14-2011, 04:13 PM
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joyism5 joyism5 is offline
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Here's the link : http://www.realoem.com/bmw/showparts...81&hg=11&fg=40

Attached are another pic. You don't need to remove the intake unless you change the pipe OSV->PCVV
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