496 Workhorse Vortec running rich
#1
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!
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!
Last edited by alaskaman1; 08-10-2017 at 12:19 PM.
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