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retarded ign timing
..."I have burned exhaust valves before I had a car where the IAT sensor was reading 300'F on a normal 70'F day, caused it a nasty lean condition and burned the valves on every cylinder."...
FALSEly hi IAT values will cause
retarded Ignition timing
which will change the timing of Peak Combustion Pressure to
After 14 degrees atdc ...
so part of the charge burns in the exhaust
not in the combustion chamber
contributing to
burnt exhaust valves
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