Search results

  1. Scott06

    Carbed Mercruiser 260 5.7L Missing Above 4000 RPMs

    If you are getting 4-6 psi of fuel pressure the pump , filter , and delivery system are doing their job and a new fuel pump wont help you.
  2. Scott06

    Difference between 4.3 engine 090 block and 090M block

    the 090 M block uses metric M10 threads for the following flywheel cover bolts and studs (2 studs for ground wires) starter bolts ( starter will work just need correct metric starter bolts) side motor mounts depending on how your fuel filter mounts two of these may be studs a decent old school...
  3. Scott06

    Omc 140 Rochester 2v Carb

    I used carb cleaner dip in a harbor freight ultrasonic cleaner then chase all passages with a stiff wire.
  4. Scott06

    Oil Pressure Below Mercruiser Limits Per Manual

    To me i think this means you dont have the correct bearing clearances on the reman or possibly a oil gallery plug was left out. Maybe try 15 or 20 w 50 and see if the pressure comes up. What were the bearing clearances when the engine was assembled ? Hate to say it but to me i would be...
  5. Scott06

    5200 question...

    dont worry about it you are fine with the way you did it. Thats what i did with mine a few years back still rock solid
  6. Scott06

    Buying a used boat anxiety-talk me down.

    very nice the 4.3 should do well in that boat is it carb or mpi ? Thats a good size interior
  7. Scott06

    1993 MerCruiser 4.3L V6 RAN OUT OF OIL

    Not high oil pressure pushing out the rtv but if you had water in the crankcase and it got over full with milk then maybe
  8. Scott06

    Engine replacement

    those shutters look fine. You must have had water in through the carb or the exhaust. Maye sure you check out your intake manifold for corrosion and cracking in the water crossover (under thermostat) that wouldnt lead to water in the cylinders but rather in the oil. Now is the time to change...
  9. Scott06

    3.0l bogging down only under load!

    There is no load on the engine in neutral so it really doesnt mean anything reving up in neutral. Likely you have a fuel supply issue related to clogged fuell filter (which is in bottom of fuel pump on a 3.0), or have clogged carb passages and a carb rebuild is in order. WHen you open the...
  10. Scott06

    Mercruiser 5.0 wont start without help getting gas to carb. But runs fine once started...

    I assume it is a newer (1996 and up) vortec with electric fuel pump. The fuel pump gets powered I think off a lug on the starter for cranking and then once key goes to run it gets 12 v off the ignition circut through an oil pressure switch (closes at 4 psi- engine not running = no oil pressure=...
  11. Scott06

    2016 4.5L mercruiser i/o Very weak performance

    What prop are you running 4200 rpm at WOT is way too low. Should be 4600-5000. It could be as simple as the prop being incorrect and dropping 2" in pitch makes it work look in the stickies at top of page there is a section on what to do if you have low WOT rpm. WHile this boat is likely...
  12. Scott06

    Claims its a cracked engine block

    Not neccessarily I saw this first hand with my neighbor a couple of years back. He got lazy winterizing, had his mechanic out after the first freeze. Freeze plug was pushed out a bit. Mechanic tapped it back in checked no water in the oil, ran it an hour same thing. Next spring he puyts the...
  13. Scott06

    Mercruiser 4.3 cracked intake manifold

    Try putting kerosene in the oil, take the spark plugs out and turn the engine on the starter. I think this is your best bet for getting the molasses out. You will need to do several times and also after you get it running again chacnge the oil and filter multiple times until it goes clear. You...
  14. Scott06

    Claims its a cracked engine block

    Is the progression of events: October 2020 you winterized boat stays in so cal? May 2021 you take boat up to tahoe do a one hour test run, temps around or just below freezing? Was oil level checked here after this run? You sell the boat, raw water is in engine. Two days later they take boat...
  15. Scott06

    Need help!!!! 4.3 mercruiser just clicking

    This looks like battery cable or battery issues. Clean boththe positive and negative cable connections to battery, starter, and block by flywheel cover (negative grounds block there), and take the battery and have it tested.
  16. Scott06

    Blown stern drive

    No you need to go up in pitch if you have a 21” now , a 23” would probably give you identical performance
  17. Scott06

    Blown stern drive

    Probably will work. I repowered my 4.3 to a 5.0, which from the factory would have come with 1.82 and 1.62 drives respectively. I kept the 1.82 ratio and stepped up from a 19” pitch to 21” and it works perfectly
  18. Scott06

    Is an aluminum steel prop better than stainless?

    I thought it was you smoking something, who is marketing an aluminum steel prop
  19. Scott06

    How to make the two arms even?

    I had the same after having my drive off i think i connected the drive the one farther out and worked the trim in and out they eventually caught back up with each other
  20. Scott06

    Outboard oil in Alpha one drive

    Agreed Not worth the $20 of gear lube. The premium lube is not the same as the synthetic or synthetic blend Hi PErformance gear lube reccomended for Alpha gen 2 drives like yours.
Top