RE: Fox 4.2 runs erratic
I thought it was a bad ignition when I bought the engine initially. I actually sent the ignition in to find out it was the sensor for the ignition was never gapped at the factory and the prop hub was ripping the tip of it off. So, when I replaced the sensor I thought my problems would be over. It solved the issue of really bad running and constant dead sticks but now I cannot tune the midrange at all. If I leaned out the midrange at all it would give the characteristic that it was too lean and on throttling up it would cut. Dan, I never knew that there was a mix on occasion with the carbs. The number on the carb said WJ71, and right underneath it with the numbers 805. I am going to check that out and see if that could be the case.