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Omega General Help / Re: Pale looking lambda
« on: 13 January 2008, 09:05:13 »
A: Antifreeze Contamination
Antifreeze in the exhaust will attack and destroy the sensing element. A leaking head gasket commonly causes antifreeze contamination.
B: Rich Fuel Mixture
This will cause a heavy black carbon layer to form on the sensor element. Rich fuel mixture is usually caused by a failure in the air/fuel metering system
C: High Oil Consumption
This will coat the sensing element with a crusty, brown layer. Worn piston rings and valve guides, or other internal engine problems can cause high oil consumption.
D: Silicone Poisoning
Residue from silicone lubricants will rapidly destroy the sensors element. Care should be exercised not to get silicone lubricants on the oxygen sensor when it is being installed.
