Blow by

1. scottjohnson88 Newbie Joined: Jul 2009 Ipswich Posts: 14 Vts

   #1 8th February 2010, 18:23

   Does anyone no if it is possible to still have a blow by even if the compression test was good?
   
   Thanks
2. KamRacing Saxperience Addict Joined: Nov 2006 A farm shed in Aylesbury Posts: 14916 Corolla AE86 Peugeot 205 B18C (in bits)

   #2 8th February 2010, 18:31

   perform a leak down test if you want to be extra sure
   
   Are you talking about the piston rings though? The way to test those is normally to put a small amount of oil into the cylinder being tested and perform the compression test again
3. scottjohnson88 Newbie Joined: Jul 2009 Ipswich Posts: 14 Vts

   #3 8th February 2010, 18:33

   Yea piston rings, got oil keep coming in to my air filter, dont no what else to do or what it can be
4. user_39613 Established Member Joined: Dec 2009 Essex Posts: 1006

   #4 8th February 2010, 18:40

   Have you got any oil around any of the breather pipes? Sounds like you mite have a blocked PCV.
5. scottjohnson88 Newbie Joined: Jul 2009 Ipswich Posts: 14 Vts

   #5 8th February 2010, 18:49

   Quote:

   Originally Posted by Saaamon Have you got any oil around any of the breather pipes? Sounds like you mite have a blocked PCV.

   Where is the pcv valve? yea its coming from my breather pipe, Dont no weather it could be a pipe blocked, if so what one would it be?