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  1. S

    Fuel pump issue

    It is not ijections, it is 4 bar carbs so low pressure pump. My old efi had high presure pump and heat exchange on pump ( copper cooler) Anyway i thin i solved the problem. I moved the pump out of the motor (i put on the wood near the motor) Today i run the motor for 40 miles and everithing...
  2. S

    Fuel pump issue

    It is not ijections, it is 4 bar carbs so low pressure pump. My old efi had high presure pump and heat exchange on pump ( copper cooler) Anyway i thin i solved the problem. I moved the pump out of the motor (i put on the wood near the motor) Today i run the motor for 40 miles and everithing...
  3. S

    Fuel pump issue

    Hi i did already and it was between 65 and 70 I want to use also a new laser next time anyway
  4. S

    Fuel pump issue

    I agree, but pump is in original position And this lx was born with electic fuel on it so i can not understand . Maybe original pump can work at higher temp then mine i don't know But all other lx has electric pump on it 😭
  5. S

    Fuel pump issue

    Update: I replace the filter ( original one and whater separator one) All original Replaced the pump (with identical model, not original but not chinese ) but nothing same behaviour after more or les 40 minutes running it stop. When motor stop the pump.is very hot If i colled it down with...
  6. S

    Fuel pump issue

    I can not post picture they said error dont know why 😭
  7. S

    Fuel pump issue

    Carburator was overhouled totally like all the motor 20 hours ago i can take in part again in case
  8. S

    Fuel pump issue

    It was new just 20 hours Now i replace again both. I have the doubt if low pressure pump can support 2 filter
  9. S

    Fuel pump issue

    Filter in suction pipe And petrol in main filter seems clean I found a lot of dirty in whater separator filter, but not sure how clean was the tank that garage gave me filter had 20 hours Now i bought 2 filter and i replace them just to avoid doubt
  10. S

    Fuel pump issue

    I checked Check valves i think is not installed. I had this boat since 2010 and never made madify on this so if it was removed it was from before. Filter in the suction pipe (small metalic one) is clean I blow in the pipe and it was free
  11. S

    Fuel pump issue

    Today i will try to check this check valves and if i can remove the suction tube to check if there is a filter. U think is not pump issue? Pump is getting hot wile is running but it is attached to the motor , and motor is 70 deg so it get most probabilly same twmp very soon
  12. S

    Fuel pump issue

    You meen the breather? The one that compensate the oxigen inside the tank? I try to run with tank plugh slightly open to let ait goes inside to avoid this but no change . I only can think the pump or fetrol sucking tube inside tank that is succking some debrids, but i remove all old petroll...
  13. S

    new propeller installation and test resoult

    So you agree to work with 15 pitch and not 17? 💪
  14. S

    Fuel pump issue

    Hi enyone had similar issue? Mercruiser 4.3 lx 4 barels carbs Totally overhauled (all components new) One month ago i had an issue wile i was running, boat stopped like if i had no petrol. I re start the boat and everithing was ok i run the boat for all month on small ride with no issue...
  15. S

    new propeller installation and test resoult

    Thanks i will try. Tonight i used the boat at full load with my family and i put the 15x15 and the behaviour was good. Maybe as u said i will use 2 One for when i will be full of stuff (high weight ) and one for normal ride. Tks 🙏
  16. S

    new propeller installation and test resoult

    Thanks i will look.for se 15.5 x 15 or 15 x 15 3 blade. Probabily 15x16 is the rigjt one but is doesn't exist. Maybe the solas 15x15 plus ... Yestetday i was checking the motor's manual and actually wot range is 4400/4800 so the 17 is just one pitch below (4200)
  17. S

    new propeller installation and test resoult

    rpm under wot is the formula needed. yes at this point this is clear, and this is why i said i need the 15 pich . my last doubt is if people that has a mercruiser 4.3 lx with similar boat experiance find this number normal to understand if i can have any issue on the motor , but as said motor...
  18. S

    new propeller installation and test resoult

    Ok so choise has to be 15 pitch if i keep this ratio. I just wander if 15 is normal for this weight and stern but i think so because it was on also on the efi that i bougt. I just need to understand now if 3 or 4 blade. In cade i will chose 4 blade pitch will remain 15? Or i need to modify?
  19. S

    new propeller installation and test resoult

    Thanks, i don't pully nothing (here in italy is not common) so actually i use boat for cruise or we ride. 99% of the time i run at 3500/3600 rpm never at full speed
  20. S

    new propeller installation and test resoult

    This is why i'm asking en help here. Motor is new i replaced everithing so i want to make it work as much nice as i can
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