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  1. G

    MCM 470 No Start Condition

    1978 Mercruiser mcm470 4 cyl. 170hp. I have spark, fuel entering the carb, and compression. Will not Start. recently installed pertronics ign. and new coil, 2 weeks ago. It was running previous. How do I check to shift interrupter switch in a no start condition, batteries turned on, key on or...
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    ok, OK THE PROBLEMS HAVE NOT BEEN SOLVED WITH IGNITION Problems jUNE 30TH entry

    Third attempt at getting this story right. Put the boat in the water today and it fired it up on first go, put it in Reverse and it stalled , boy was I ever elated. a few choice words. Remember I installed a new Tachometer because I thought it had a short in it and it would have caused a...
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    ignition problem

    Ok,Ok, so I changed over to Pertronix ignition from points system, now I have this problem. This is a 1978 Mercruiser MCM470 4 banger. I also in stalled new 3.0 ohm Pertronix coil and I have 12.4 volts on the Pos. terminal of the coil, wire connected at the terminal, but immediately when I...
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    470 Impeller change

    "Well after 2 months of repair "Well after 2 months of repairs, exhaust manifold,(leaking cooling chamber into the exhaust and into the head head) completely rebuilt head upgrade to 4" heat exchanger, new plugs, new lifters I started it and everything seemed to be fine, but a fair bit of steam...
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    MCM 470 coolant lossoverheating

    "Sorry I posted this to the wr "Sorry I posted this to the wrong thread ealier. I have 1978 Merc MCM 470 that we have just put in the water this year and the closed cooling system is losing coolant and starting to overheat but we cannot tell where it is going, not in the bilge. Engine is...
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    Honda bf8a lower unit removal

    I have a 1997 Honda bf8a and I I have a 1997 Honda bf8a and I have removed 5 bolts so far on the leg but am unable to see where to disconnect the shift rod. I want to change the impeller. I have Seloc on-line manual but does not show or say where to disconnect shift rod. Any help would be...
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    Winterizing Mercruiser 470 Engine amp Sterndrive

    "Getting ready to put my boat "Getting ready to put my boat in winter storage, just bought this vessel in July so haven't got the Manual yet,but I want to make sure of course there is no water in the engine or sterndrive. This is a closed cooling system but is there other places in the engine...
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