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  1. mvn

    Volvo Penta 7.4 Gi

    XDP drives were the composite ones.
  2. mvn

    Thoughts on New Gen Direct Injected VP 5.3L v8 350HP?

    After having boats with several powerplants (4.3L Volvo carb, 5.0L Merc MPI) I now have a 2019 boat with a Volvo V6-280 DI. Absolutely the best engine I've ever had. No issues whatsoever (except 1 bad plug at 20 hours). Excellent power, good fuel economy, quiet, vibration-free, easy to...
  3. mvn

    Need help with 1979 Mercury 45 4.5HP

    What does your spare coil read on the primary side?
  4. mvn

    Need help with 1979 Mercury 45 4.5HP

    To test the high tension side, you need to put your meter on the plug wire terminal (like you have) and on the bare braided wire in your first photo. That braided wire must make good contact with the mounting bracket. And yes, coil in last photo will work. Mark
  5. mvn

    Gear oil leak, but from where?

    Also check the shift shaft and shift shaft seal. If the shift shaft was not in the proper position when reassembling, the shaft may have been tweaked causing a leak. Mark
  6. mvn

    Error code dtc222:tps2 voltage low

    Volvo # 21141689 - ~$600 USD....ouch! Mark
  7. mvn

    Error code dtc222:tps2 voltage low

    This? https://www.volvopenta.com/shop/0/part-sections/54171712 Check all of the electrical connections first. Do you have access to a scan tool? Mark
  8. mvn

    Where can I find the oil filter?

    Ok, I've been following this thread successfully (I thought), right up until now. How does a Nordic track make oil changes any easier??!?
  9. mvn

    Stalling after reversing

    Same issue with a 2008 5.0L. It ended up being a bad IAC. Only an OEM Merc replacement solved the problem. Mark
  10. mvn

    does anyone know?

    Remove the seat portion on the left in the photo above and replace it with something like this.....
  11. mvn

    does anyone know?

    Check this out.
  12. mvn

    does anyone know?

    Looks like there is a seat the tapered portion of the brass part you show engages with. The internal seat could be heavily scored which would explain why it won't seal (metal to metal). Can you see inside of the hole? Can you verify a tapered mating seat is in there? Is the thread on the...
  13. mvn

    does anyone know?

    Looks like an open petcock to me that was opened during winterization. Does the brass lever turn at all? I can't tell if its a 90 degree shutoff or multi-turn.
  14. mvn

    marine engine mystery

    I would first check the prop hub for slippage. Mark
  15. mvn

    2007 volvo penta 5.0 fuel injectors are not firing at all.

    Get your hands on Volvo service manual #7742218 (EFI diagnostics). Diacom software or a Rinda Techmate scan tool will also help tremendously. Mark
  16. mvn

    Procedure to drain and refill closed antifreeze on 5th gen Volvo Penta 4.3?

    Correct. Manual #47708014 has the proper coolant change procedure very clearly described with diagrams and tool requirements. Mark
  17. mvn

    Procedure to drain and refill closed antifreeze on 5th gen Volvo Penta 4.3?

    Volvo service protocol for Gen V engines shows a VCS coolant replacement period of 48 months or 200 hours, whichever occurs first. Any luck finding VCS coolant? I had to go to a Volvo heavy equipment dealer to find some. Mark
  18. mvn

    Do new gimbal bearings not swivel

    They are generally very stiff. You can clamp the outer race in a vise and use an alignment bar through the inner race to swivel it. Several videos on YouTube show this. Mark
  19. mvn

    Topping off a compass, what to use?

    https://www.westmarine.com/ritchie-navigation-fluid-for-ritchie-compasses-P014_420_007_502.html Looks like it's a synthetic form of mineral oil as it says it can be mixed with mineral oil in older compasses. Mark
  20. mvn

    Volvo Penta 5.7 no spark

    I have the TechMate Pro kit (94070S) which includes both the 94024 and 94029 adapters (and mercruiser adapters) but I've only ever used the 94029 Canbus adapter. When I update to the latest firmware on the scan tool next week, I'll try out the circular adapter (my V6-280 has both connections as...
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