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    Mercruiser ECM replacement?

    Just a quick update for all of you who kindly offered to help me out. Sent the ecm to OBD Diagnostics (Redondo Beach CA) and finally got it back safely to Greece. The report from Bob of OBD was as follows: "It is for a 1996 Merc 5.7TBI engine and had 36 hours on it and no logged trouble codes...
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    Mercruiser ECM replacement?

    Chris, Thank you for your answer. So what would you do if you were in my shoes? Had the ecm shipped to mefiburn for inspection? Does he has to know whether it's a flat or roller cam for programming it? Something else? Kind regards, Kostas
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    Mercruiser ECM replacement?

    Took some pictures...
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    Mercruiser ECM replacement?

    There was something before the first "0" that looked like "1" but thought it was a casting residue.
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    Mercruiser ECM replacement?

    To all, Best wishes for the new year! Alldodge, I think I found the number this time... 024388 or 0243880 Is it correct? Kostas
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    Mercruiser ECM replacement?

    No, this is not the original to the boat engine. The boat is 1984, the previous owner replaced only the engine (Mercruiser 225hp) around 1997-1998 with this new one (left the original alpha one sterndrive). I'm wondering whether the pressure washing is the cause of the problem I have!
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    Mercruiser ECM replacement?

    Just a good wash was enough for the old layer of wax to be removed. The engine only has 235 hours since new...
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    Mercruiser ECM replacement?

    These are the injectors that I bought almost a year ago... https://www.ebay.co.uk/itm/MerCruiser-Set-of-2-Flow-Matched-4-3L-5-0L-5-7L-TBI-Injectors-852956A1-3855182-/192076272464?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=711-127632-2357-0
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    Mercruiser ECM replacement?

    I will, but currently away from the boat! Will go on Saturday and let you all know. Many thanks.
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    Mercruiser ECM replacement?

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    Mercruiser ECM replacement?

    Have some pictures in file, any definite conclusions? :)
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    Mercruiser ECM replacement?

    Gents, Have just found this listing https://www.ebay.co.uk/itm/Factory-REMAN-ECM-for-Mercruiser-5-7L-EFi-GM-350-V8-861542R2-/275081614471?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=710-127635-2958-0 Will this work with my engine? Please let me know. Kostas
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    Mercruiser ECM replacement?

    alldodge, Found some casting numbers: *0266* GM 5.7LG SGI Are these correct? Can Chris please advise whether the correct ecm is indeed 861078T1 for the roller cam? Kostas
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    Mercruiser ECM replacement?

    Alldodge, Please excuse me, injectors were used, cleaned and tested not rebuilt. I can find the ebay seller and let you know, but it's been more than a year ago. Kostas
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    Mercruiser ECM replacement?

    Dear tail_gunner, Not been insulted at all. I have zero knowledge regarding marine fuel injection! Paid the best well known mercury mechanic in my area (Athens, Greece) to install the motor back in the boat and have it working properly. His conclusion was that I need a new ecm, as already told...
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    Mercruiser ECM replacement?

    Kenny nunez, Yes, already tried that! Kostas
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    Mercruiser ECM replacement?

    Tail_gunner, 1. Yes the motor revs higher when in neutral. 2. Original Model number 17086237 GM Rochester 0x55, I bought a pair of remanufactured ones from eBay as the oem were way too expensive! 3. Don't have a clue! I used the propeller that came with the boat when purchased. 4. How can I help...
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    Mercruiser ECM replacement?

    Thank you all for the comments. Dear Chris, Don't have the serial number you ask, but will go and check it out tomorrow. Only found the attached picture that I took prior washing the engine. Bought the boat/engine 2 years ago, had the whole thing taken apart for restoration, I worked on the boat...
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    Mercruiser ECM replacement?

    Alldodge thank you for your answer. From what I can understand you're suggesting that the engine had an incorrect ecm installed. I cannot argue with this, as I purchased the boat/engine after 15-20 years of storage. Attached a printscreen of the ecm listed on mercury marine parts catalog (part...
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    Mercruiser ECM replacement?

    Hello to everyone, New to this forum, proud owner of a Chris Craft Scorpion 210 with a mercruiser 350. After testing, I was told by my mechanic that I need a new ECM (motor is a MCM 5.7L EFI). He replaced my original ecm (delco model 16234539) with another he had in his shop (delco model...
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