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    Mercruiser 4.3 injection without any ignition

    Hello, alldodge: thanks I always do my best to return the help that I have been provided ;-) QBhoy: you are right to point this out! we don't what the previous bad mechanic did exactly and for sure he didn't know himself what he was doing... I checked back the docs and yes for this engine we...
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    Mercruiser 4.3 injection without any ignition

    Hello, I solved 2 issues today :) First one: slave solenoid issue when we turned the contact key to start the engine there is +12V to the slave solenoid Ground is also ok we were able to crank with a direct cnx of slave contacts so it confirms what was already suspected --> slave solenoid must...
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    Mercruiser 4.3 injection without any ignition

    sorry I check back the full electrical sheme from ECM555 doc I followed each grey wire from commun slice101 and there is one connection to ECM pin 18 ! then I can first disconnect ECM connector and check if +5v is correct otherwise ECM is bad :-( will take you informed ;-)
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    Mercruiser 4.3 injection without any ignition

    Hello, stresspoint: battery voltage is 12.90v when I do a direct connection of slave connections engine is cranking correctly and I can try several times so battery seems correct and I tried with 2 different alldodge: I think so that the slave is bad :-( re is i concerning the +5v all grey...
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    Mercruiser 4.3 injection without any ignition

    Hello, For QBhoy: sorry seems I didn't received an email about your post then I saw it only when posting my last tests conclusion :-( what do you mean by: "Give them a dunt" to give a light hammer blow on them? "There is two solenoids on top of the engine nearer the port side" in the port side...
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    Mercruiser 4.3 injection without any ignition

    My son told me he had to make a direct connection between contact of the slave solenoid and then start engine was running because I can hear the "clac" of the slave solenoid it means that signal comes from the key so then slave solenoid to be changed for that point? then everything on ignition...
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    Mercruiser 4.3 injection without any ignition

    Hello, To go ahead I made few tests and took few pictures my son will be back next week so I was alone to test and was unable to check all... the starter engine don't start It was running last week end :-( When I turn the key I only hear one "clac" on the slave solenoid if I disconnect the...
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    Mercruiser 4.3 injection without any ignition

    sorry AllDodge for the duplicate, I probably made a bad action when I post my previous answer :-( QBhoy: it can be also a root cause because the "professionnal" has done some modification everywhere including this security as well :-( thanks to the full electrical wiring diagram 4D-7 and other...
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    Mercruiser 4.3 injection without any ignition

    ok for the complete wiring diagram that's fine now I didn't read it carefully because I tought it was only for ECM debuging but I found all components relative to ignition that perfect and it should help us to check from point to point many thanks for your help don't worry if I don't give more...
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    Mercruiser 4.3 injection without any ignition

    sorry AllDodge, but what do you mean with: "Reposting the same question(s) is not allowed." I don't understand I saw it but didn't care about it because I tought it was the New York subway map :) honnestly that's unreadeable and that's the first time I can see such kind of scheme :-( I will...
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    Mercruiser 4.3 injection without any ignition

    Fun Times: thanks for your help! When I was looking for the right manual I checked manuals titles after #18 and I found only #32 for 4.3 engine When I saw ECM 555 in the title of #36 I didn't care about it :-( I got it now and I will read it carefully because the extracts you attached are really...
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    Mercruiser 4.3 injection without any ignition

    Hello Alldodge: that's my son's boat and I don't have access before few days you will find attached the picture of the ignition coil 392-863704 for this engine model if it can help you to identify the exact type in all Mercruiser manuals I never see such ignition coil in diagrams only 2 wires...
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    Mercruiser 4.3 injection without any ignition

    Hello, sorry for my english mistake, I'm French and I don't like translators... ;-) I bought a boat having a Mercruiser 4.3 2003 with 6 cylinders price was low because there is no ignition and I was aware of that I don't know exactly what did the previous owner supposed to be a "nautic...
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