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    225 efi mariner 1996, excessive smoking at start up. The engine, not me!

    Thanks for the reply! Crankcase check valve brand new this past fall as oil transfer to engine reserve tank failed. And was smoking before. If oil pump shaft seal defective would I not notice excessive smoking at start up if stopped for a couple of hours? And would'nt oil consumption be...
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    225 efi mariner 1996, excessive smoking at start up. The engine, not me!

    Thanks for your comments! I now understand the idle exhaust. Makes total sense. Oh, those clever engineers...
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    225 efi mariner 1996, excessive smoking at start up. The engine, not me!

    3L. Thanks for looking at this.
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    225 efi mariner 1996, excessive smoking at start up. The engine, not me!

    hahahahaha....good answer! Thanks! Keep the dry side up.
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    Mercury 225 Offshore- LOSING MY MIND PLEASE HELP

    Have you verified that all fuel lines are in perfect health? Went down the rabbit hole with a similar issue (96 225 efi mariner). Turned out the inner linning of the fuel line had disintegrated and pretty much cut off fuel supply and this being fuel injection, clogged that up as well. This...
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    225 efi mariner 1996, excessive smoking at start up. The engine, not me!

    At cold start you would think I was fogging for mosquitos! Coming from the idle exhaust next to the tell tale. Goes away very shortly. No abnormal oil consumption. Runs great. Has been doing this for some time now. Not a problem with performance. Just embarrassing as the neighbors think...
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    mariner 225 efi '96 dies abruptly at 4K+ RPM

    At times, actually most of the time, I am amazed that these engines run at all when you consider the electronics and all that is being monitored as it runs. Here's my story. Engine would start but died at idle unless I kept the bulb pumped. Pulled the mechanical fuel pump and found a broken...
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    Abrupt loss of battery charging-225efi-1996

    Four year old battery abruptly lost voltage. Running fine and went from normal voltage to would not turn warm engine over. Removed and was tested at parts store and was told it was DOA, dead cell I presume. Purchased new marine battery, installed, boat started instantly but voltage meter...
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    bmass1

    If you could provide me with the name/number of the mechanic with the 225EFI it would be greatly appreciated! I have run into a dead end here! Many thanks!<br />Chris
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    Overheat alarm. Remember the beer offer? Still on!

    1996, 225EFI Mariner, 350 Hours.<br /><br />Even the dealer has given up and had me call Mercury direct, although they would not give any direct advice which, of course I could understand.<br /><br />Once the engine is warm, over 3000 RPM, overheat alarm goes off, computer retards timing to drop...
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    poppet or not

    96 225 efi. What happens if you run this motor with the poppet valve removed for a short (please define) time as an experiment looking for over heating problems?<br /><br />Thanks gang.
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    Solve this overheat mystery, I will send you a beer!

    I am serious as a heart attack. This issue is driving me to drink and I will gladly share with you.<br /><br />Issue: '96 Mariner 225 EFI hanging on the back of 23' Hurricane Deck boat, having a bizarre overheating issue. This is a bit long to get you all the details, so bare with me.<br...
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    Mariner 225 EFI Ignition Question

    Greetings Fellow Boaters!<br /><br />This is the first boat I have actually owned so I have been getting familiar with all its aspects. This is a '96 Mariner 225 EFI with about 280 hours. I am the third owner. Owner number two purshased in 1998 from the original dealer and probably put about...
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