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  1. M

    Merc 4.3L - Wiring and Idle Adjustment

    Can you fill me in more on this part (timing and adjusting idle rpm). Iv searched through the owners manual and it doesn’t get into timing/idle speed. And I can’t find anything in the adults only section other than how to find tdc, nothing on the actual adjustment. I’m more concerned with the...
  2. M

    Merc 4.3L - Wiring and Idle Adjustment

    I knew I was forgetting something…..fixed! Innova 3568, seems to everything I would need plus some.
  3. M

    Merc 4.3L - Wiring and Idle Adjustment

    2003 Mercruiser 4.3L V6 Serial #: 0m670495 Two Questions, not sure if they are related to each other which is why I am posting both questions in the same thread. 1. Can somebody tell me what the two wires I have pictured and circled in red are for? One of them is capped, the other has some...
  4. M

    What prop??? Help

    What’s on there now(pitch/make/blades)? I have a similar boat. When I bought it, it had a 3 blade 17p prop on it. It sucked, for some reason it took forever to plan out and I could only do about 30 before hitting the limiter. Switched to a 19p 3 blade, and that worked quite a bit better. Planned...
  5. M

    Throttle issue?

    I had a similar issue. RPM gauge would almost “bob” up and down at random times. On the back there is a selector switch that corresponds to the number of cylinders your engine has. Sometimes the contacts under that switch get corroded. The remedy is to just flip the switch back and forth a few...
  6. M

    Mercruiser 4.3 Steering

    I assume by steering ram you mean the ram at the end of the cable, that runs into the actuator and out the other side then pins to the steering arm. If so.....How would that have any effect on moving the drive if there is no steering ram in the tube? Like I said, it’s almost as if the drive...
  7. M

    Mercruiser 4.3 Steering

    Iv noticed my steering has become more and more stiff while out on the lake. After doing some research and reading, Iv decided to order a new steering cable. I removed the old one to properly measure it. After I got done and was cleaning up, I noticed that my drive was turned to one side so I...
  8. M

    Adding gear lube

    I did it by using Bondos method. Drive was mounted. Pumped into fill plug until it ran out the vent, plugged vent, continued pumping until monitor was full. When you say drop significantly, how much are we talking? An entire monitor worth? I guess I’m more or less just curious as to how big that...
  9. M

    Adding gear lube

    I can see how that makes sense, the vent hole provides a larger (and closer) hole for the air to escape, rather than having to travel up a small diameter hose.
  10. M

    Adding gear lube

    Saw somebody talk about this on another forum, which sparked my curiosity so I figured I would get all of your thoughts on it. 2004 Mercruiser 4.3l with Alpha1/Gen2 drive Pulled my drive and replaced seals on it recently. In doing so I needed to drain all of my gear lube. I also found a small...
  11. M

    Winterizing Mercruiser 4.3 question

    Watched a bunch of videos on YouTube and thought I had this winterizing thing figured out. However, I realized after watching that my engine differs slightly from those that I have watched. I have attached a picture of my engine, it has an extra set of hoses going into a “T” on top of the...
  12. M

    Digital Hour meter - counting intermittently

    2004 Mercruiser 4.3L in a Crownline bow rider. Hour meter is a digital readout on the dash in the instrument cluster. It’s clearly getting power because it turns on and displays the hours. But several hours will pass and the meter won’t change. Then for whatever reason it will begin counting up...
  13. M

    2004 Mercruiser 4.3L Oil Leak

    I started noticing sandy brown water in my bilge about a month ago. The water isn’t an issue, I constantly have people getting in and out from tubing. But the fact that it looked like oily water was an issue. I then began to notice that over the course of a few weeks the oil on my dipstick...
  14. M

    Prop Help, Speed issue?

    I just purchased a 2004 Crownline 180 Bowrider. This is the first bow rider I have owned, as well as the first I/O iv owned. Spent my entire life on fishing boats with outboards, decided to trade it in for something more suited for the family. Anyways, the boat has a 4.3L Mercruiser v6, 1:81...
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