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  1. J

    merc 140 electronic ignition conversion.

    The used boat I bought last year has a Merc 140 in it, with the electronic ignition conversion (replaces point and condenser). THe spark doesnt seem hot enough...its more of a yellow instead of blue. The coil also gets real hot; is this normal?
  2. J

    milky oil: can it be something other than water?

    Can something other than water turn the oil milky? I have a Merc 140 that I cant get started (actually started tonight but wont idle) and I'm wondering if the unburned fuel would turn the oil milky? The local mechaninc says no, it would have to be water. I just changed the oil but tried for a...
  3. J

    correct spark plug for mercruiser 140?

    I have a Mercruiser 140; the Seloc manual calls for a RN6 plug; the plugs in it are a RV15YC4 ( both Champion). The specs look a little different between the two types; is one a sub for the other?
  4. J

    oil pan drain plug thread size on Merc 140

    I have a 1984 Mercruiser 140 and while I'm changing the oil would like to replace the drain plug with one of the hoses that allow you to drain the hole thru the transom...any idea what size plug is on the pan?
  5. J

    mercruiser 140 won return to idle

    My Merc 140 won't return to idle. It looks like the previous owner put a spring on to help pull the throttle all the way back but I don't think thats factory and would like to get it the way it's supposed to work. I'm assuming something is wrong with the linkage, but everything looks ok and...
  6. J

    battery size for Merc 140?

    What size battery should start a 4 cyl Mercruiser 140? I have a dual purpose (deep cycle/starting)battery that has 550 CCA and the battery tests good yet the motor turns over very slow. I bought the boat late last season and it was always hard to start. Is that common with this engine? The...
  7. J

    merc or rochester carb on merc 140

    How can I tell what carb is on my 1984 Merc 140? Is the accelerator pump included in the rebuild kit?
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