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  1. 04fxdwgi25

    Very Low Compessions on Mercruiser 5.0 MPI Engine. with Exhaust Manifold, Thermostat Housing Removed.

    2 adjacent cyl's with zip compression would point to a blown head gasket. Those bolt on parts have nothing to do with compression.
  2. 04fxdwgi25

    Trim will go up but not down

    Bad tilt limit switch (left side of drive) would be my 1st place to troubleshoot. Jumper it out inside the boat and see if everything works.
  3. 04fxdwgi25

    454 in a 21' bowrider

    I have the carbed 454 Mag w/ B3 in my 220 cuddy. To be perfectly honest, I believe the boat is way over powered, for what it is. The big plus is ability to pull a large load behind (like more than 1 skier or a big tube) and get up on plane very quickly. It's fun, but can only "have fun" with...
  4. 04fxdwgi25

    Thermostat gaskets 3.0 merc

    A picture of the thermostat housing and cover would help and year and serial number of the engine.
  5. 04fxdwgi25

    Making a pressure tester for Mercruiser outdrive

    Yup, 0-30 PSI, 1/4" NPT gauge for $9.00 at Ace Hardware......
  6. 04fxdwgi25

    Making a pressure tester for Mercruiser outdrive

    30 psi gauge is only $9.00 at Ace hardware. I just bought one to test someone else's cooling system to verify a freeze crack.
  7. 04fxdwgi25

    Alpha 1 Gen 2 drive ratio?

    18' Bayliner I had years ago had a 3.0 in it with the 1.98 drive in it. Factory stock. Just sayin'
  8. 04fxdwgi25

    Bunk Boards or Guide Poles?

    Have super long side guides on my 22' and never have a problem loading, even in wind and current.
  9. 04fxdwgi25

    Oil pressure

    That's not a leak. It is a gaping hole if coming out as fast as it goes in.
  10. 04fxdwgi25

    454 information

    If you can get your hands on the magnum, they are supposed to have forged crankshaft and forged pistons. 7.4 has cast
  11. 04fxdwgi25

    454 information

    My boat has a 454 Mag / 4 bbl installed.
  12. 04fxdwgi25

    350 mag mpi fuel cooler removal help

    Actually, buying the Hardin S/S plugs is cheaper (when bought in a pack of 5 for $25) than the OEM plastic ones. Have used the Hardins in my last 3 boats and have never had a problem with them. Amazon has the blue plastics for $10 for 10 (but bet they are cheapie Chicom knock offs)...
  13. 04fxdwgi25

    Caddy XT5 Towing Capability

    My CT6 has the 6 cyl 3.0 twin turbo (404 hp) and when it shifts from 6 to 4 or back it isn't even noticeable, except for the indicator on the dash. Have heard there is a setting or driving mode to disable (forgot what it was), but haven't bothered since it displays no bad manners and gets...
  14. 04fxdwgi25

    How big of a problem do I have?

    Plus a magnetic pickup tool
  15. 04fxdwgi25

    Fuel Gauge making full, even with no power.

    Probably. The gauge sender minimum resistance is 33 ohms (240-33), 33 ohms being FULL and 240 empty. Grounding it, dropped the 33 to zero. You effectively shorted it out and smoked the gauge.
  16. 04fxdwgi25

    Pinion gear timing to driven gears in B3 upper housing

    Do you need the actual Mercruiser Bravo drive rebuild manual? I have Manual 28 in PDF if you need it. Has a full rebuild section in it and bet it is 100 time more complete than the Seloc manual.
  17. 04fxdwgi25

    Where can this water be coming from?

    Maybe get a cheap borescope (a bluetooth / WiFi one can be had on Amazon for cheap) and have a peek back there while running. Won't show a leaking core plug behind the flywheel, but will show a core plug on back of head or a weeping head gasket. Maybe you can get your phone camera back there to...
  18. 04fxdwgi25

    Actuator shock absorber

    I would guess that if it moves (Stiff), it is good.
  19. 04fxdwgi25

    coupler repair question

    ^^^^^^ #1 It is junk and just plain old needs to be replaced.
  20. 04fxdwgi25

    Temperature Sender?

    Carbed engines with the Thunderbolt-V ignition used knock sensors.
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