496 Workhorse Vortec running rich
I recently purchased a 2005 31' Tiffin Allegro with the 496 Workhorse Vortec motor with a Banks header exhaust system installed. It was running rich at the time, I replaced the plugs, wires and heat shields.
It still idles rich and is diesel like rich under load. I cannot see any O2 sensors in the system and hear rumors about a Mass Air Sensor that may be the issue. I don 't know where it is located, the part no., etc. Until I can locate a motor manual for this motor, can anybody pass along any ideas? There are no OBD codes or engine light showing. Thanks! |
My problem is solved, I cleaned the MAF and replaced both O2 sensors. Whichever one was the culprit I don't know, but I'm good.
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