<VV> Leak Down Testing for bad head gasket

[Matt Nall]

Hi, Can anyone please tell me what areas to focus on (listen/look)  at when 
conducting a cylinder leak-down test to determine if the engine has a bad head 
gasket?

This would be on a running, installed 110 HP motor in a 1966 LM coupe. Thanks.

Rich


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Normally a head gasket "Chirps"  when engine is first started, if leaking....  Normally you always re-torque the heads  before trying to repair.


Testing is straight forward.;


Each cylinder on TDC  compression stroke.......  listen  for air in carbs / exhaust / oil filler tube


If nothing then,  it's got to be between the head and cylinder.


Matt Nall
Charleston, Oregon
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