depth finder problem

[CTFSHWHISKER]

have you changed spark plugs?it's interference you just need to find what started causing it,have you rewired or re routed anything?

[bobberdown]

You might need to check your transducer cable. I had a simular problem with a eagle and my battery had moved over and wore into the cable. It worked fine for awhile unless the motor was causing it to viberate. Just a thought.