I think that the cylinders are numbered on the intake manifold. THe
number is cast right into the manifold. Also, I believe that the bottom
plugs are the ones that tend to foul. Did you try to do a lean runup to
try and "un-foul" the plug? I have had good luck doing that.

Jon Kraus
'79 Mooney 201
4443H @ TYQ




Anthony wrote:
My engine analyzed is telling me that the spark plug on the #6
cylinder, left mag is fouled. I have a new plug, but can't tell which
cylinder #6 is and whether it's the plug on the top or the bottom....
Can anyone tell me which plug it is...?

Thanks much,

Anthony