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  1. #1
    Join Date
    Aug 2014
    Location
    Reading, Berkshire
    Posts
    38

    Default KAD43 - Oil leak from starter motor

    Hi All,

    I have a Sealine S38 with KAD43's. I've noticed some oil leaking from the starter motor on the STBD engine ... perhaps a couple of tablespoons of black oil following a 3-4 hour run (at low speed river use):

    20190421_111407.jpg

    I've tried nipping the bolts that secure it to the engine, but they were pretty tight.

    I've also experienced the STBD engine intermittently failing to start ... perhaps 1 in every 20 attempts (the other 19 times it starts instantly). When it fails to start, the battery voltage drops from a healthy 12.5V to pretty much nothing, so it seems like its trying to turn? It then point-blank refuses to start (generally until I stop the boat), and then on attempting to re-start it starts perfectly fine and may not 'play-up' again all day.

    Is this common? Am I seeing the signs of a 'goosed' starter motor?

    Thanks in advance!

    Regards to all

    Steve

  2. #2
    Join Date
    Jul 2002
    Location
    Home: Kent. Boat: Chichester
    Posts
    43,052

    Default Re: KAD43 - Oil leak from starter motor

    There should not be any oil in that area to leak

    Check if its running down from one of the valve cover gaskets ( Any body had the covers off recently to adjust the valve clearances and reused the old gaskets?}

    Hpoefully not coming from the head gasket or the crankshaft oil seal .

  3. #3
    Join Date
    Aug 2014
    Posts
    13

    Default Re: KAD43 - Oil leak from starter motor

    Oil leaks out the charge air coolers after a low speed running
    It then gathers on the starter motor
    I have a pair of ad31 that both do it on the river,and been told by loads of people it’s normal

  4. #4
    Join Date
    Aug 2014
    Location
    Reading, Berkshire
    Posts
    38

    Default Re: KAD43 - Oil leak from starter motor

    Hi GSD,

    That's encouraging - I'll take a closer look tomorrow to see if I can see where it's coming from.

    BW

    Steve

  5. #5
    Join Date
    Nov 2002
    Posts
    2,649

    Default Re: KAD43 - Oil leak from starter motor

    There is a small drain hole in the underside of the charge air cooler to allow condensation to escape, this is where the oil is dripping from. As said not a problem unless its excessive indicating wear on the turbo oil seals.

  6. #6
    Join Date
    Jun 2001
    Location
    UK East Coast
    Posts
    1,710

    Default Re: KAD43 - Oil leak from starter motor

    Quote Originally Posted by SteveDH View Post
    Hi All,

    I have a Sealine S38 with KAD43's. I've noticed some oil leaking from the starter motor on the STBD engine ... perhaps a couple of tablespoons of black oil following a 3-4 hour run (at low speed river use):

    20190421_111407.jpg

    I've tried nipping the bolts that secure it to the engine, but they were pretty tight.

    I've also experienced the STBD engine intermittently failing to start ... perhaps 1 in every 20 attempts (the other 19 times it starts instantly). When it fails to start, the battery voltage drops from a healthy 12.5V to pretty much nothing, so it seems like its trying to turn? It then point-blank refuses to start (generally until I stop the boat), and then on attempting to re-start it starts perfectly fine and may not 'play-up' again all day.

    Is this common? Am I seeing the signs of a 'goosed' starter motor?

    Thanks in advance!

    Regards to all

    Steve
    As others have said, if a small amount it appears to be normal and comes from the small drain hole at the base of the charge cooler. Happens on my TAMD41 too and has not got any worse in the last 4 years and has not given any starter motor problems so maybe this is not related to your intermittent starter problem

    Www.solocoastalsailing.co.uk
    Last edited by Plum; 22-04-19 at 21:14.

  7. #7
    Join Date
    Aug 2014
    Location
    Reading, Berkshire
    Posts
    38

    Default Re: KAD43 - Oil leak from starter motor

    Thanks, and yes - looking at some images on the KAD43 engine online, the drain in the aftercooler is directly above the top of the starter motor where I'm first seeing the oil appear.

    Oil also seems to be collating in a pocket/web of the engine casting behind the starter motor … a 4-5 hour run results in around a third of an egg cup of oil collating here, and around a table spoon ending up on the engine room floor directly below.

    So it looks like we've identified where it's coming from … I guess the critical question is, how much oil loss is a problem?

    BW

    Steve

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