Hi all,
I have a 02 Merc 115 4-stroke efi that shutters and has a loss of power when I try to get on plane. After about five minutes or so of running it, it seems to fix itself. It will then run fine untill I turn it off. If I start it again it will do it for maybe 30 sec then it will fix itself. I tested the compression and spark and all ok. I have changed the thermostat since it was stuck open. I tested the thermo-sensor and its ok. I have hooked it up to a portable tank with fresh fuel and no change. I took apart the VST and cleaned it. It was clean anyway. No change. I cleaned the injectors with merc Power Tune, no change. I keep thinking its a sensor since it fixes itself, but I have pulled all I can and everything seems ok. Anyone have any ideas where to go from here?
Thanks,
Mike

I'm trying to open forum but sometimes there are no images on it

Need to check it with computer diagnostic to see if it shows any problems. May be the idle control valve.

__________________
Regards
Boats.net
Mercury Outboard Parts
MerCruiser Parts
Force Outboard Parts
Mariner Outboard Parts

It was checked last year and no faults. Can I test the Idle Control Valve? I took it out but didnt know how to test it. It looked clean so I left it.
Thanks,
Mike

Anyone know what voltage the Idle control valve needs to work at?

Does anyone know If I can start the motor with the
control valve out to see if it moves in and out?
Mike