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  1. Dubed

    Time to chuck the 470

    I have a 3.7 190 hp. Its a love / hate thing for sure. I did all the research and decided to have the thing fully rebuilt and replaced all the bolt-ons, alternator conversion, pertronix upgrade. All is working well (for now) and am happy with it. I just cant see a 3.0 135 hp, 180 ft lbs of...
  2. Dubed

    Fuel vent issues 4.5L 250hp Mercruiser

    Maybe a dip in your vent line that acts like a p-trap. My buddies boat has this issue. He simply puts a tube in or over the vent and blows the vent line clear before fueling. Solved his problem
  3. Dubed

    Main engine for trolling

    I just had my 3.7 rebuilt. The builder also told me not to run at idle speed for very long (during break in period). Use high zink oil and keep above 1800 rpms when running at lower speeds. Also keep alternating speeds, so don't run at same rpm for long periods at a time. (Again, during break...
  4. Dubed

    MCM 3.7 190 cap and rotor question

    I'll check the adjustment on the Petronixs and button it up. Hopefully that was it! Thank you
  5. Dubed

    MCM 3.7 190 cap and rotor question

    Yep. Looks like a piece of plastic from the casting. I threw a new rotor on. Thanks
  6. Dubed

    MCM 3.7 190 cap and rotor question

    There is up and down movement but barely any side to side play.
  7. Dubed

    MCM 3.7 190 cap and rotor question

    Hey guys. I seem to have a mismatched cap and rotor. Engine has about 20 hours on it and started misfiring at low rpms. Digginig into it I found what I think is the rotor is not a match for the cap. You can see from the picture the rotor is just grazing the contacts on the cap. I have...
  8. Dubed

    Does 1988 bayliner have a kill switch?

    This is normal for that era.. bottom left
  9. Dubed

    Noisy water pump? 4.3MPI

    Can you sell me one of those stethoscopes? I dont want to pay more than $50.00 plus shipping.... :)
  10. Dubed

    Totally baffling !!! Impeller replaced !! And not pumping

    Now I'm baffled... Are you spinning the prop shaft while in neutral?? I'm not an ace technician like most of these guys on here but don't think that will work
  11. Dubed

    Totally baffling !!! Impeller replaced !! And not pumping

    Not spinning g the shaft unless spinning the motor... correct? What are we spinning withe the drill?
  12. Dubed

    Flushing Muffs

    Thanks for everyone's opinions on this post. Even though it's not technically a Mercruiser mechanical question. Much appreciated!
  13. Dubed

    Flushing Muffs

    To me, they seem like they would have good coverage and not have the ability to slip off. Looks like a win win
  14. Dubed

    Flushing Muffs

    Exactly what I did which prompted this post.😡
  15. Dubed

    Flushing Muffs

    Thanks
  16. Dubed

    Flushing Muffs

    They look pretty robust. Do you feel being fed on both side of the outdrive is beneficial.
  17. Dubed

    Flushing Muffs

    Hey Guys. Maybe this isn't worthy of discussion but... What do you all use for muffs?? The cheap rectangular ones that I have really suck and looking for something better. They loosen, vibrate off, and don't have wide enough coverage. The ones I'm looking at are the oem ones that look round...
  18. Dubed

    Overheating mercruiser 3.7l lx

    Cooling
  19. Dubed

    Overheating mercruiser 3.7l lx

    Do you have the #8 manual for this system? It has troubleshooting section
  20. Dubed

    Lubricating throttle/shift cables

    When I was younger (much younger) I raced dirt bikes for many years. We had a gizmo that clamped onto the end of the throttle cable, brake cable, etc. It had a rubber end with a small hole in it for the nozzle on a WD40 can. We would lubricate a bad cable at the pit stop to make it thru the...
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