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  1. M

    Volvo Penta 5.7 no spark

    28-1-6 Diagnostic steps for ignition coil Gas engines 3.0, Gas engines 4.3, Gas engines 5.0, Gas engines 5.7 Binder: Date: 05-2014 Page: 1(5) The following information applies to port fuel injected IAFM engines (2001 and up) that use a MEFI or EGC engine controller. The ignition coils on these...
  2. M

    Volvo Penta 5.7 no spark

    Volvo published a service bulletin covering troubleshooting this ignition system. That bulletin is S.B. 28-1-6 Most dealers will print you a copy if you ask them. I highly recommend you get a copy and follow it carefully before going further.
  3. M

    Volvo Penta 5.7 no spark

    Hi @mkor If you go to https://www.volvopenta.com/en-us/service-and-support/your-engine/manuals-and-handbooks/ and input your serial number the website will list the manuals that you should have to diagnosis and repair this engine. 47703486 wiring diagrams 7749393 EGC diagnostics and 7743614...
  4. M

    Magnum or No?

    Decals and ECMs are just a couple of examples of engine manufacturers setting higher prices for basically the same product, based only on how much that product sold for originally.
  5. M

    Magnum or No?

    Magnum was more of a marketing term and didn't really mean much depending on years.
  6. M

    TRS sterndrive maintenance

    TRS was a pretty robust drive but they could use one of two different transmissions (shifting is done inside the boat) borg warner or mercury marine. This is where problems might arise. Last I checked not much available for the merc trans. I worked on a lot of Scarab II's, they were my second...
  7. M

    Overheating under load

    Did you run a stiff wire through the bypass passage that is in the pic Lou C posted? That passage getting plugged is a common problem. Metal coat hanger works good.
  8. M

    Quicksilver transom assembly replacement

    TRN: 2A667781 61000004P MERCRUISER ALPHA TRANSOM Manufacture Date: 02/18/2021 Comments: QS ALPHA TRANSOM DIRECT SHIP ** NOT REGISTERED **
  9. M

    2008 8.1 Gil Fault Codes

    You don't post a serial number so I can't look them up. But you can go to this website and get a copy of the correct diagnostic manual. https://www.volvopenta.com/en-us/service-and-support/your-engine/manuals-and-handbooks/
  10. M

    DP-D1 Vertical Shaft upper nylok nut

    There isn't a torque spec for this that I have ever seen. Just tighten it as tight as you can with hand tools.
  11. M

    Mercruiser 3.0 PCM-09 Code 3050

    Yes, this is a good idea. Might help with the question of why it was removed. Inspection of the old catalyst can help with diagnosis.
  12. M

    Mercruiser 3.0 PCM-09 Code 3050

    Yes, not good. Looks like you need a new catalyst and then will need to determine why someone took it out.
  13. M

    Mercruiser 3.0 PCM-09 Code 3050

    I don’t think those numbers will show up until you get into full PID and I don’t see anywhere that has happened yet. Most testing on these engines requires that the engine be running at the speed and load the fault was set at. I would also recommend that you use the record function in Diacom...
  14. M

    Mercruiser 3.0 PCM-09 Code 3050

    Your welcome. On this forum, many people try try to be helpful and share the things that worked for them. But most people don’t realize how much engines have changed. Years ago I used to do a cylinder balance test by putting on a welding glove and pulling spark plug wires while the engine was...
  15. M

    Mercruiser 3.0 PCM-09 Code 3050

    Anything is possible with the thermostat failure. But it looks like the manifold only got to 214 degrees, don’t think that’s going to kill the cat in a short amount of time. I wouldn’t recommend opening the Cat housing just yet. It doesn’t appear that the engine has been run enough to complete...
  16. M

    Mercruiser 3.0 PCM-09 Code 3050

    Unless you have seen good catalysts vs bad cats, it might be a good idea to post some pics of what you find. You need to look at both ends, different faults can burn one end or the other and sometimes both.
  17. M

    Mercruiser 3.0 PCM-09 Code 3050

    We were told in school that you can flood the cat with unburnt fuel or too much oxygen. This is dependent on RPM, load and amount of time doing the test. What engine you’re testing will need to be considered also because of the amount of catalyst material present. 3.0 has one cat, 8.2 has 3 per...
  18. M

    Mercruiser 3.0 PCM-09 Code 3050

    Noticed earlier that someone recommended running a injector kill test. I wouldn't recommend running this test on a EC engine without proper training ---- can cause some pretty good damage in a hurry! Same goes for spark kill test.
  19. M

    Mercruiser 3.0 PCM-09 Code 3050

    The report you posted looks ok because you’re not running the engine at the speed and load required to get the catalyst monitor running. VERY IMPORTANT!!!!!!!! Need to run the engine under load at 1800-3000 rpm. You want to keep the throttle setting constant while running. Code SPN 521009 FMI...
  20. M

    Fwd-b1 oil change

    oil change is pretty much the same, except the drain plug is below the props near the front of the drive. refer to your owners manual or use this link to download a free copy https://www.volvopenta.com/en-us/service-and-support/your-engine/manuals-and-handbooks/ props are held on with the...
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