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    mercruiser torque dropped off

    Got a mercruiser 350 Mag MPI. Had it out the other day and the torque has suddenly dropped off. The boat wont get on the plane when fully loaded with 800 KG when a couple days before it was fine. I dont believe the engine is in limp mode as I can get boat on the plane when ballast empty...
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    Risk of not using a 90 amp starter solanoid fuse

    Hi all. motor is a 2003 mercruiser 350 mag mpi. My 90 amp starter solanoid fuse has gone and i was looking at an official replacement part and the cost is around $70-90 in australia for the official fuse which is hefty price tag for a fuse. I was wondering what risk i might be taking if i do...
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    merc ignition relay electrical issue

    Hi, I have a 2003 mercruiser 350 mag mpi tow sport v-drive motor. The ignition solenoid (merc part number 86-865202T) is clicking on and off between the two circuits. The boat is therefore beeping on and off constantly when you turn the ignition key and will not start. I have pulled the relay...
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    Motor not firing on all cylinders

    I have a mercruiser 350 mag MPI tow sport. The motor is not firing on all cylinders. unburnt fuel is coming out the exhausts. The spark plugs are two months old. The dizzy cap is two months old. I checked all the leads and they have valid ohm readings. It was running perfecly a week ago and...
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    mercruiser 350 mag wont start/fire

    Mercruiser 350 mag tow sport would not start today. Looking for anyones ideas as to why. The motor is turning over by the starter motor but it does not fire. I tested it this morning and it fired a few times then went to take it out in the water and it stopped working. It was running 7 days...
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    locating a sensor warning

    I have a two beep warning going off on a mercruiser 350 tow sport. The items i have gauges for are engine temp, oil pressure and volts which are all reading ok. The warning seems to go off some times then stop going off for a while then may start up again later. In the manual I have found...
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    merc EFI Code tool.

    Is it possible to make a cheap scan tool for reading the EFI codes off a mercruiser 350 tow sports 2003 model. Something like explained at this link with a paper clip and LED or voltmeter to read the signal flashes...
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