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  1. M

    bravo III milky oil but holds pressure for days

    Year doesn’t help me. Too many mid year changes and drives get replaced. But if it is a never worked on before 2008, probably due for a complete reseal.
  2. M

    Looking for any suggestions

    Agree to start with fuel pressure. low side 8psi ± 4 high side 29psi ± 2 Watch injectors with a timing light. You can get a much better look at the pattern. If you suspect the ECM is overheating --- get a couple of cans of compressed air (air duster for keyboards) when the engine shuts down...
  3. M

    Impeller Job - Mating Surface Corrosion

    Yes with that date code, I would use it and disregard everything I said about color! It's probably been over 10 years since I did a Gen2 impeller. Now you got me second guessing myself. Maybe it was the blue ones that were garbage? ---- sucks getting old. Make sure you clean the drive shaft...
  4. M

    bravo III milky oil but holds pressure for days

    @2004 searay didn't post a serial number so don't know what the weak points of his Bravo 3 version. They had different issues over the years. Yes there is a problem with leaking, no it won't heal itself. I've seen many techs pull fish line out of prop shaft seals (and been guilty of doing it...
  5. M

    Impeller Job - Mating Surface Corrosion

    Yes, very light coat on elbow gasket both sides and light coat on those 2 bolt threads. Will help next time you have to do this job. Nothing on carb and manifold to head. Clean bolt threads and the holes they go into, install dry. Torque wrench is useful, none of these get tightened as much as...
  6. M

    bravo III milky oil but holds pressure for days

    At Merc school they teach us "push-pull. wiggle-wiggle, turn-turn and shift-shift anything that moves". Remember that the drive must be completely drained during testing. Very important! Have you pulled the drive to check for water in the bellows? The first couple of years of the Alpha One...
  7. M

    Impeller Job - Mating Surface Corrosion

    This is very close to the site I use. It's the consumer site --- missing a lot of what a dealer can see. Might be better if you make an account? Don't know about that. Always search by serial number, many changes to some of this product over the years. This is part of the reason a good dealer...
  8. M

    Impeller Job - Mating Surface Corrosion

    821759A2 is a very old part number, Yellow ones had problems, you want the black one with 8 feet on the bottom --- it's covered in the manual. It will come with seal and O-ring installed. Just paint the bottom of the bottom gasket and the gear case where you removed the paint. Top gasket already...
  9. M

    Impeller Job - Mating Surface Corrosion

    Yes there is a gasket there. 1. replace yellow seal carrier, it's melted and a weak point. Clean driveshaft with sandpaper before installing new one. Pack the area between the seals with 2-4-C. 2. scrape loose paint with gasket scraper or razor blade. 3. paint that surface with perfect seal. 4...
  10. M

    MerCruiser 5.0 Carb Engine Compression Test, Two Piston came back with Zero

    I'm more of a diagnose it before disassemble it kind of guy. Leakdown test. Bring #6 to TDC (on the compression stroke) and put some compressed air thru the sparkplug hole. Listen at carb, oil fill and exhaust. Hear where the air is escaping, repeat for #5 If it's coming out of the oil fill, no...
  11. M

    Axius Gen 1 Removal

    Your welcome, happy to help when I can. Sorry but I don't have any recommendations on a tech in your area. I don't know what number you called but this is the number to call. The Consumer Support number is (920) 929-5040 I'm guessing that finding the right tech will be critical getting this...
  12. M

    Axius Gen 1 Removal

    I understand the need to feel safe driving the boat! But I'm not sure if you're going about it the right way. The Axius system must be serviced by trained people. Here is just one of the many warnings in the service manual for this system. It is imperative to return electronic modules and...
  13. M

    Mercruiser Motor identification

    you're welcome the pics don't show the crankshaft, if you haven't inspected it, you should
  14. M

    Axius Gen 1 Removal

    First I should post that I'm not an expert on Axius. I was a MerCruiser master tech for a dealer that sold 98% Volvo boats. We only sold 2 Axius boats, one never had issues and the other one's problems were solved with a call to tech support. My only real experience is going to all the classes...
  15. M

    Mercruiser Motor identification

    This is a 2018 motor that was installed in a 2018 HEYDAY boat and never registered. The last warranty repairs were done in 2021. The long block wasn't replaced under warranty. MerCruiser tells us that there are NO GM parts in this engine. When I said surely Merc must have used "off the shelf"...
  16. M

    Axius Gen 1 Removal

    I haven't helped people to remove it, but I have helped people to put it back after someone made the mistake of removing it! I would need engine serial numbers to help further. Each Generation and version has different issues.
  17. M

    Merc Smart Craft // 150 Four Stroke - Question

    I don’t have a lot of hands on experience with the new O/bs, so my mind is stuck in the old 2 strokes. Water pressure was the first thing I added to the ones I owned, but I always had an old speedometer and some pitot hose laying around so it was just another hole in the dash —- still have the...
  18. M

    Merc Smart Craft // 150 Four Stroke - Question

    Happy you got it sorted out! Well mostly I guess, You have "system" gauges. So the speedo is getting it's info straight from the engine ECMs Not sure what you have going on, the system will read 2 tanks, make sure you select "not installed" for tank 2. Other then that, you could try a master...
  19. M

    Merc Smart Craft // 150 Four Stroke - Question

    I don’t know. If it was me doing this. Both tachs.
  20. M

    Merc Smart Craft // 150 Four Stroke - Question

    ok thats what it should have done
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