[ROVERNET - UK] Rover P6B - compression test query

Kent Kinard kkinard at wcc.net
Thu Nov 30 15:01:13 GMT 2006

Looks like Glen's post and mine passed each other.  If I 
wasn't so long winded, I could have read his first.  Nice 
to know we agree.

Kent K.

On Thu, 30 Nov 2006 09:44:21 -0500
  Glen Wilson <rovercar at comcast.net> wrote:
> John Burkhard wrote:
>> Hi Peter, 
>> Be sure to check the crankcase pressure and if John has 
>>the tools do a 
>> leak down test.  For this test the engine should be cool 
>>and will take 
>> a few hours to do.   Please do remember the old adage 
>>about the 
>> weakest. link. 
> It's also worth remembering that, in general, high 
>crankcase pressures in the Rover V8 may not be due to 
>gases getting past the rings at all if the cylinder heads 
>are leaking into the valley area due to a bad seal at the 
>head gaskets. Remember that the cylinder head bolts must 
>not be torqued to the original settings that are in the 
>workshop manual. If the heads were off and someone 
>installed them per the directions in the workshop manual, 
>they WILL leak into the valley and pressurize the 
>crankcase thereby forcing oil and oil vapors out.
> Glen
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