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    Spark on left side only (V6)

    Hey guys I have a 1978 Merc 150 V-6 and last time out it started running like poo, couldnt get out of its own way, but idled perfect. I took the carbs off cleaned them all out brand new gaskets and whatnot inside, and as I got it back together I decided to check the plugs and noticed im not...
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    Serial number Confusion

    Hey guys I have what I believe to be a 1980 Black max 150 but im having a hard time with the serial number that's on the mount plate. The number on the plate is A8055413. Ive looked at all the guides and cant seem to find anything in that area starting with an A or followed by an 8. Can someone...
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    Tach wiring harness?

    Hey guys I just got a different outboard for my boat its a 1981 Black Max 150 and the guy didnt have the wiring harness with the 4 prongs that goes in the front of the control box to the tach. I see it listed on Crowley but the number its listed under is wrong, so i was wondering if you guys new...
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    Black Max Oil (Klotz)

    Just curious as to what oil I can and should run in my Black Max. Its a 1980 150 Black Max my question is I have 4 gallons of KLOTZ TechniPlate synthetic Tc-w3 snowmobile oil that I run in my sleds is this safe to use in my Merc too? I figured I already spent the money and have this left over...
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    '74 115 Questions

    Hey guys I found a line on a decent '74 blue band 115 and was wondering how these engines are? I noticed its got the distributor on it and was wondering if they are a temperamental engine or can you just tune her up and let er rip? Debating if I should pick this up or hold out and purchase a...
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    Fuel Tank Question

    Hey guys I have a question regarding different fuel tanks for boats. My question is, is there a difference in fuel tanks for outboards and inboards? My boat 18 ft Glastron fishing boat has a old Merc outboard but has an aftermarket 30 gallon aluminum marine fuel tank. I bought the boat as a...
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    Scored One

    I just had to share this with someone.... I was over my g/f's dads house telling him about the boat i just picked up, and how i cannot get the engine to run right (1250 SS Merc) He tells me he has something that i could take home with me. We go out to the shed and he uncovers a old Merc 650, I...
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    '69 1250 SS Idle/ Timing Issue

    I got a 1250 SS and I had it running and idling good a week ago and checked all seals for leaks.... but when I shut it off the timing jumped and I had to order a new belt since the old one was toast. I threw the new belt on and am pretty sure I timed it right, my manual says at TDC the solid...
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    Any other way?

    Hey guys i recently got a '83 Glastron with a 115 Merc or so I think on it. The serial number on the transom mount is to messed up to read it so i was wondering if there was any other number on this to tell me exactly what it is, or even if it was in-fact a 115 and not a 110 or something. The...
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