Mark, I thought that you had to have the throttle butterfly fully open when testing compression. 
 
Would the fact that 3 and 4 pistons are down mean possibly head gasket?
 
regards Greg
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of mark krawczuk
Sent: Sunday, 18 November 2001 1:45 AM
To: [EMAIL PROTECTED]
Subject: breather smoke from rocker cover?

hi, my turbo engine recently  started breathing alot out the breather, i gave it a comp test and  here is  what i got:
 
dry, all plugs out, and throttle closed:
no 1 cylinder 150 psi
     2             150 psi
     3              80 psi
     4              75 psi
  results with  oil:
1                  185 psi
2                   175 psi
3                   125 psi
4                    125 psi
 
 
any ideas weather its valves, pistons  etc.....?
 
 
         mark k
 
  

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