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My 1995 940 T has an EGR valve... which makes switching out the breather box next to impossible.
Anyhow, I've been running on Mobil 1 for about 2 years now... and previously could pass the jiggle test with flying colors, so the crankcase pressure was fine.
Now, for some reason, the jiggle test doesn't pass nearly as well. I've reamed out the flame trap joint and the small pipe from the manifold, to no effect.
Anyone know if the EGR valve might be affecting the crankcase pressure in some way?
Thanks...
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