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  1. M

    What is this in my drive oil reservoir

    Maxum 1800 SR with 1999 mercruiser 4.3L V6 with Alpha One, gen 2 (i think) Engine #OL 323311 Drive#OL140489 I was doing in the engine bay today and went to top up drive fluid but noticed this milky sludge at the bottom of the reservoir. I hadn't noticed previously. It was changed about 6...
  2. M

    Rebuilt Mercruiser 140/3.0 doesn’t have enough power to plane

    Thats cool. Love to see that trick Scott (or should we call you MacGyver). Got a video?
  3. M

    Acceleration Issues. Hesitation and bogging down after idle.

    I've taken it out on the water and runs much better. Smooth acceleration and runs as it should. Think that was the issue. Worth looking at that Vacuum Piston if having the same issue. The only issue I'm having is when it is cold and hasn't been started for a few days, I have to start with a...
  4. M

    140 or 160 thermostat. Does 20 degrees make a difference?

    I just put a 160F on my 1999 4.3L (was the part to use on the specs) and had the same query only becuaseI read it on a forum I came across. I run only in salt water, but figured since I flush it after each use, it probably wasn't a big deal and would be better for a slightly warmer engine...
  5. M

    Temperature gauge issues? Can't get a temp reading?

    Just updating. Replaced the thermostat today with new gaskets (with the brass lugs) and the spacer per the parts diagram. Cleaned it back to bare metal. At first I still wasn't getting a reading but after a few minutes t-stat must have opened and bingo, got a temperature reading. Eventually...
  6. M

    Temperature gauge issues? Can't get a temp reading?

    So, im not a mechanic but pretty sure this thermostat looks rooted. Isn't there meant to be a spring?? Where on earth would it have gone? Rusted away completely? Far out, wasn't expecting to see it this bad. Im ordering a new thermostat. Will let you know if it makes the gauge work (and maybe...
  7. M

    Acceleration Issues. Hesitation and bogging down after idle.

    Just closing this out. Seems that cleaning the Vaccum Piston may have been the issue. Hope so anyway. Seems to run smoothly through the revs. Only on muffs currently, will get on the water and report, but I just broke something unrelated so back to the parts shop. 🤦‍♂️
  8. M

    Acceleration Issues. Hesitation and bogging down after idle.

    Yeah, we pay for the though! Our pacific peso isn't as strong as USD plus the tax at the pump....ouch This is the springy thing. At the 2min mark
  9. M

    Acceleration Issues. Hesitation and bogging down after idle.

    Sorry the first pic didn't upload..damaged gasket attached
  10. M

    Acceleration Issues. Hesitation and bogging down after idle.

    So, i took the carby off and re-cleaned it, with attention paid to the vacuum piston. I couldn't get it out and didn't want to risk breaking it so cleaned it best I could. There was some small amounts of gunk and after putting some silicone spray it seems to move pretty freely. Im putting some...
  11. M

    Temperature gauge issues? Can't get a temp reading?

    Thanks. Will pull it off, have a look and report back.
  12. M

    Temperature gauge issues? Can't get a temp reading?

    Thanks dodge. Pulled the sender and tested it out of the boat in a cup of water and it gives readings around these results, so Im sure its the right part. I also checked the ground between the thermostat housing and the battery negative as well as the body of the temperature sender and they...
  13. M

    Temperature gauge issues? Can't get a temp reading?

    I didn't actually measure the resistance. It was a cup of coffee i had been drinking while thinking what to do next. Ill have another go at it if the ground idea doesnt work and report back with some resistance readings.
  14. M

    Temperature gauge issues? Can't get a temp reading?

    Thanks dodge. Ill try the grounding and revert. Stingray, i don't have an infrared temp gauge. If not the ground, it doesn't leave a lot of other options other than the thermostat i guess???
  15. M

    Temperature gauge issues? Can't get a temp reading?

    Hmmm, that is a good question. Thank you. I didn't check that. It would have a gasket in between wouldn't it, so how would it ground?
  16. M

    Acceleration Issues. Hesitation and bogging down after idle.

    Thanks. What else would it need? I changed everything?
  17. M

    Temperature gauge issues? Can't get a temp reading?

    Hi again. Having trouble with my temperature gauge i just can't figure out. I can't get a reading on the temperature gauge. It is a 1999 Maxum 1800 with a 4.3L V6 Mercruiser. Serial numbers are OL323311 (engine) and OL509362 (Transom). I have done the following: 1. the gauge seems to work...
  18. M

    Acceleration Issues. Hesitation and bogging down after idle.

    Hi from Sydney, Australia. Been reading your site a lot as I have just bought which wasn't meant to be a project but has become one. Hoping someone may be able to help me solve. It is a 1999 Maxum 1800 with a 4.3L V6 Mercruiser. 2 Barrel Mercarb. Serial numbers are OL323311 (engine) and...
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