Search results

  1. R

    Mercruiser 3.0 LX spark plug failure

    Well, we were 4 miles off sure when this happens I swear it sounded like the engine had thrown rod. Engine takes longer spark plugs and the local engineer installed short reach plugs which to me means the heat was concentrated in the spark plug hole causing the spark plug casing to overheat and...
  2. R

    Mercruiser 3.0 LX spark plug failure

    Well short reach plug was used instead of long reach and the part number of the plug was M43T which isn’t specified for this engine so I am guessing that it was a contributing factor to the failure
  3. R

    Mercruiser 3.0 LX spark plug failure

    0F268759 Never seen anything like this
  4. R

    Mercruiser 3.0 LX spark plug failure

    So I have a 3.0 LX and I was 13 miles offshore when the engine lost 500 rpm and a very loud clatter begun. We killed the engine and use the ancillary to get back only to find something that I have never seen in my life before. The local Marine Engineer installed short reach delco MR43T instead...
  5. R

    2020 F4MH which carb to convert to 6hp

    Anyone ?
  6. R

    2020 F4MH which carb to convert to 6hp

    Hi all, I have the above engine and would like to convert to 6hp I’ve done some reading and all that is required is the Mercury 6hp carb but I also read that a 6hp Tonhatsu carb will do the same job at a lesser cost. Can anyone enlighten me as to which carb I need to buy please ? My engine...
  7. R

    3.0LX - Mercarb to Rochester ?

    Thanks Scott. What has to be done for it to fit ? The seller said they’d supply it with the correct fuel inlet so the pipe doesn’t need to be bent.
  8. R

    3.0LX - Mercarb to Rochester ?

    Hi all I’m thinking of buying a Rochester 2 bbl as a spare carb due to the boat being in a remote location. I’m told by the vendor that it’s a direct replacement. Is that true ? is my idea sound or am I asking for any trouble ? many thanks
  9. R

    Urgent help - nearly broke down at sea. Fuel Problem.

    Had at least 3 tanks worth of fuel since coming out of storage. New filter too. Wouldn’t that mitigate the goo ?
  10. R

    Urgent help - nearly broke down at sea. Fuel Problem.

    We have an outcome. Jelly in the fuel and one bad spark plug. greek engineer found these issues I always like to end the thread with an outcome in case it helps others
  11. R

    Urgent help - nearly broke down at sea. Fuel Problem.

    Thanks and I agree about the bearing as the engine temp doesn’t move from 150 and the engine spins up nice on the starter. This engine doesn’t have thunderbolt it’s EST ignition module and the module was replaced last year.
  12. R

    Does this sound normal ?

    Great news thank you. I was thinking exhaust shutter but wanted a second opinion
  13. R

    Urgent help - nearly broke down at sea. Fuel Problem.

    Only checked pipe from thank you pump. Removed pipe from tank and put the Mitty vac tool on it there. checked for vacuum in the tank after each run by listening for a hiss when opening fuel cap - nothing
  14. R

    Urgent help - nearly broke down at sea. Fuel Problem.

    Checked and opens as it should
  15. R

    Does this sound normal ?

    Mercruiser 3.0lx Alpha one gen 2 whilst I’ve been working on something in the engine bay this sound from the coupler area caught my attention and I wanted to ask if it sounds normal ? almost sounds like a diesel - engine runs nice and quiet, all this noise comes from the transom area. Uploaded...
  16. R

    Urgent help - nearly broke down at sea. Fuel Problem.

    Had a quick go at removing the pickup tube but the fitting wouldn’t budge. Don’t want to risk breaking it and don’t have time for penetrating fluid. I found a local with an outboard tank and I hooked it up directly to the fuel pump. Started her up at anchor in neutral and brought the rpm to 3500...
  17. R

    Urgent help - nearly broke down at sea. Fuel Problem.

    Thanks Bondo, we ran out of time and the boat is due to be towed to dock in an hour or so. Now she will be at the mercy of Greek island engineers. Not ideal
  18. R

    Urgent help - nearly broke down at sea. Fuel Problem.

    Regarding a spun coupler - I’ll explain more clearly what happened. we were cruising at 3600 rpm or thereabouts at 23 mph with 4 young kids and 2 adults. All of a sudden the rpm dropped to 3k on the gauge and we lost power and slowed down to around 5-10 mph maybe more but my gauge isn’t working...
  19. R

    Urgent help - nearly broke down at sea. Fuel Problem.

    Yep thought about it after posting. I tried to get the big top nut undone today with an adjustable spanner to no avail. was I working on the right nut or should I be undoing the square block that the asv screws in to ?
  20. R

    Urgent help - nearly broke down at sea. Fuel Problem.

    Ok plucked you the courage to test it with the check ball removed from the asv. Was fine for 5 mins then the same issue again. Returned to anchor at fast idle. Checked all hoses - no issues. stumoed
Top