I had my new 40 hp e-tec out for the first fishing trip last week and seem to be getting some kind of interference in my sonar unit when I turn the sensitivity up all the way. No interference if sensitivity is below 75%. Motor and battery cables are about a foot away from the transducer cable. Could spark plugs be the problem? Motor is great otherwise. Laker

E40DPLSOR--Model
05089721----SN


Modified by laker at 5:38 AM 5/23/2006