Logo
Results 1 to 12 of 12
  1. #1

    Default "My faithful yanmar barely sta

    "My faithful yanmar barely started and then did not start again after warmed up. It seemed like lots of sooty black smoke when running,then I shut it down for a little while and tried to start nothing but misery! This catalina 27 has been in the family for 15 years and I had the best luck with it.Any Info would be welcome,thanks ,Nathan"

  2. #2
    Join Date
    May 2006
    Location
    pensacola, fl., u.s.a.
    Posts
    1,366

    Default "post model #. if its an older

    "post model #. if its an older boat, could be YSE or YSM ? (horizontal cylinder) or 1GM (vertical cylinder) also, does it have a proper exhaust system, or made up system. (plumbing pipe, lagged) ?"

  3. #3

    Default "I thought it was a YSB 8 it i

    "I thought it was a YSB 8 it is horozntal,it does have proper exhaust system"

  4. #4
    Join Date
    May 2006
    Location
    pensacola, fl., u.s.a.
    Posts
    1,366

    Default "ok, YSB. been a few years sin

    "ok, YSB. been a few years since I've worked on one. will refresh myself in am. still have books on it. reason I asked about exhaust is catalina made their own. had a habit of plugging up. classic symptom was hard start, and sooty exhaust. will check book, and post tommorrow. S."

  5. #5
    Join Date
    May 2006
    Location
    pensacola, fl., u.s.a.
    Posts
    1,366

    Default "prime suspect is exhaust mixi

    "prime suspect is exhaust mixing elbow. over time, they fill with carbon, narrowing exhaust passage. have also seen deteriorated hoses collapsed internaly. if it can't breathe, it can't run. next I would check injector. to test properly, needs to go to shop. most diesel shps can pop test. call around. You can do a rudimentry test on Your own, though. remove injector, reconnect fuel line, and turn over. should spray a fine mist, about 15 degrees wide, with no streams, or drips.(IMPORTANT- there is a pre combustion chamber beneath injector, that will shoot out like a bullet. remove, or contain it!!!) also, shut off water intake before cranking more than 30 seconds, as You could fill exhaust lift, and engine. check and post. S."

  6. #6

    Default "Thanks,I will check hose and

    "Thanks,I will check hose and passages for buildup of carbon.Give me a few days to check things out the boat is 60 miles away. Nathan"

  7. #7
    Capt William Myersl's Avatar
    Capt William Myersl Guest

    Default "Sir The first rule of diesel

    "Sir
    The first rule of diesel repair is anytime you have a problem, check the fuel first, change filters, you may have water, of bio sludge in the fuel. Before you do anything else draw some fuel and look at it. Have you ever pumped the water off the bottom of the tank? Opened the tank and cleaned it?"

  8. #8
    Join Date
    May 2006
    Location
    pensacola, fl., u.s.a.
    Posts
    1,366

    Default "cap'n, I agree completely

    "cap'n, I agree completely. check filters, etc. first. worked for a yanmar dealer years back in San Diego, and saw a lot of these engines. a lot of catalinas too. very common there. and plugged exhaust was very common cause of soot. but, always check basics first. good point."

  9. #9

    Default "Thanks for all of your input!

    "Thanks for all of your input! I just sold the boat as is.Thank you,Nathan."

  10. #10
    New Owner's Avatar
    New Owner Guest

    Default What do you do if it sucks in

    What do you do if it sucks in water through exhaust?

  11. #11
    Join Date
    May 2009
    Location
    amsterdam holland
    Posts
    1

    Default "NIce to have found this site

    "NIce to have found this site , I just bought myself a ysm 8 today in parts but all overhauled so that will be a nice thing to put together again, I was wondering in what kind of boat to put it , to what size do they perform best, has anyone have suggestions , I still have to buy a boat with it,"

  12. #12
    Join Date
    Mar 2009
    Location
    wellington new zealand
    Posts
    26

    Default hi i have a 1gm10 yanmar and i

    hi i have a 1gm10 yanmar and its rated at 9hp and it pushes my yacht really well my yacht is 23foot and weight approx 2500 pounds not fast but steady and reliable

Similar Threads

  1. Yanmar 3GM30F wont start
    By Marc Groves in forum Yanmar
    Replies: 30
    Last Post: 03-23-2016, 04:47 PM
  2. 6-71 hard to start
    By Game Over in forum Detroit Diesel
    Replies: 6
    Last Post: 07-29-2010, 02:07 PM
  3. Hard Start
    By dusty410 in forum Johnson Evinrude Outboard Archive
    Replies: 2
    Last Post: 05-19-2009, 12:23 AM
  4. Replies: 0
    Last Post: 08-12-2007, 08:27 AM
  5. Mercruiser 170 1986 model wonbt start or hard start when hot
    By Kirk Barrett in forum Mercruiser Sterndrive Archive
    Replies: 9
    Last Post: 06-24-2007, 09:32 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •