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Originally Posted by stuzman
I'm not sure if it will run rich, but I do know that when oil or its vapor gets on the MAF sensor, the engine will rev up to about 3K RPM's and then immediately shutdown. I've had to clean the sensor twice for this condition. Since, this sensor measures the amount of airflow coming into the engine, it stands to reason that you could have a rich mixture if the incoming air is incorrect as measured by the MAF.
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Thanks for the feedback. I recently cleaned the MAF, as well as the air intake boot and it's associated tubes. There was a lot of oil and gunk in the boot and around the PCV valve, so I think that I sill try replacing it sometime soon. I'm thinking that I will also clean the throttle body & fuel injectors as well, though this might not get done until the weather warms up. If anyone has any other suggestions they are appreciated.