Recent content by Etzler

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    SOS... Guardian issue

    2008 Mercruiser 350 Mag inboard. Serial no OW698323. Guardian alarm goes off at various Rpms. When the alarm goes off the engine loses power and won't reset until the power is retarded below 1000 rpm. Sometimes the alarm won't go off until your over 3500 rpms. Then another time out, as soon...
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    Engine alarm? Where to begin?

    2008 350 mag tow sport in a Ski Centurion. Cruising at 3000-3300 rpm I get a solid alarm. It won't go away until I pull the power back to idle. Temps and pressures are all good. Will this set a code in the 555 ecm? Possible trouble shooting ideas? What sensors tie into the alarm?
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    2008 inboard spedo problem

    Have a 2008 Ski Centurion. Took it out today and the spedo was reading crazy high. It would jump around at low speed and peg out at 60 when faster than idle. (Perfect pass read correctly). How does the electronic gauge get its speed information? Is there a setting on the gauge itself for...
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    Compression test "hissing" noise.

    Doing a compression test on a 2008 350 Mag inboard. Had to pull off the lower water hose off the bottom of the exhaust mainifold to reach the spark plug. When I would crank, with all the plugs out, I would notice a hissing sound coming from that hose fitting. It would last up to 30 seconds...
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    350 Mag Code 43

    350 Mag Towsports. Starts, idles, but has no power. Running very rich. Throwing a code 43. Full disclosure. Boat was sunk and recovered. Cleaned all connections and replaced several items. Coil, crank sensor, plugs, wires, cap-rotor and fuel pumps. Fuel pressure is roughly 35 psi.
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    Replacement ECM

    I sent my ECM off for repair. It was full of water, so far they have not been able to salvage it. The motor is a 350 Mag MPI for an inboard. Is there a big difference between one for an inboard vrs a bravo drive?
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    Where in the "bleep" is the distributer module wire?

    This is stupid, but I am at a lost. 2008 350 mag MPI. In the process of cleaning the corrosion off all my wiring harness, somehow, someway, I can't locate the wire that connects to the module in the distributor. I have searched high and low and can't find it. There are the two connectors...
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    Help with reserrecting a sunk 350 Mag

    Purchase a sunk 2008 ski boat with a 350 MPI motor. The boat was submerged for five days at a depth of fifty feet in fresh water. I have been able to revive most of the accessories up to the engine. The engine will turn over, but the main power relay isn't working. It has power on two of the...
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