km1125 wrote:Source of the post Does the Perko battery switch feed both engines? If so, you can rule that out. I'd definitely check/clean the negative cables from engine to engine and from BOTH engines to battery. It's possible you have an issue with the port negative cable that's using the stbd connection when IT starts (OK) but when the stbd engine is trying to start the voltage drop on that cable affects the port motor.
The Perko switch feeds both motors, but it is also the source of the main starting cable for the stbd motor. I pulled the perko switch apart and cleaned all of the contacts that I could get to, and cleaned all of the power supply lines and grounds with emory cloth, scotch bright and added no ox. Seems to have cured the issue. Thanks gang. The advice provided helped me rule out the helm wires, and the contacts for the solenoid and relay (and the solenoid and relay themselves).
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