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  1. alldodge

    4.3 MPI Possible ECM issues

    Something is overloading/overheating and tripping. While I'm all for watching real data, just don't see how you have enough time to see data to determine what is happening currently. Measure the 12V and 5V readings to see if they change any during the cycle. It may very well be the ECM but...
  2. alldodge

    4.3 MPI Possible ECM issues

    Has distributor cap been replaced?
  3. alldodge

    4.3 MPI Possible ECM issues

    If your saying FP now stays running when motor is running, or it still cycles on/off?
  4. alldodge

    Seadoo jet boat stalling

    The VIN is actually a HIN (hull ID number) but doesn't help with the motor Do see some gunk but not a lot
  5. alldodge

    preserve an used electric fuel pump for storage?

    Yes IMO Pumps lay on the storage shelves for years and are good. Only issue giving it many years of time would be rubber breaking down. Or if stored in humid area, rust
  6. alldodge

    Closed cooling diagram

    Bummer, its in the title and everything :(
  7. alldodge

    Closed cooling diagram

    Assuming open cool
  8. alldodge

    Seadoo jet boat stalling

    Not the fuel pump so much as the fuel lines might be collapsing internally. They may also be flaking pieces off. With it sitting so long it might have issues with gumming up from the old gas sitting so long. Don't know the serial number so unable to look up the parts. Check the fuel pressure
  9. alldodge

    Seadoo jet boat stalling

    Don't know enough bout the motor, but I would suggest taking the fuel system apart and clean it. Many of the old watercraft had issues with the fuel lines and they needed the lines replaced
  10. alldodge

    preserve an used electric fuel pump for storage?

    The fuel pump shouldn't have any fuel stay in it, it should all drain or evaporate out. They can get gummed up by old fuel staying in it in the lines connected to it
  11. alldodge

    4.3 MPI Possible ECM issues

    Having a 555 ECM means there is no paper clip option If it won't build pressure I would look at the fuel pressure regulator, item 13 https://www.mercruiserparts.com/bam/subassembly/31504/12839/60 Check fuel pressure at the rail, should read 43 psi. If fuel pressure is real low then it won't...
  12. alldodge

    1993 Volvo penta 431 no power from alternator to fuel pump

    I posted this on "your thread" also If a diode is needed, buy a 1 or 2 amp diode online or local electronics parts house. Cost for VP part is $25 and a 2 amp diode is about 50 cents
  13. alldodge

    4.3GL-D Issue

    Need to keep this on your thread Just search for 1 or 2 amp diode. The VP part cost about $25 and finding them online or at local electronics parts house is about 50 cents
  14. alldodge

    1993 Volvo penta 431 no power from alternator to fuel pump

    The purple wire is what keeps the motor running. Check for 12V at the ALT to see if its powered up. Then check the Green wire which goes back to the FP relay. Note there should be 12V on the purple wire when the key is turned ON, and doesn't matter if motor is running or not
  15. alldodge

    Volvo Penta D4 300 problem

    That's why I mentioned check wiring and connections on the port side. You have replaced throttle and no change. Then swapped the EVC and it worked on the STRB side but not on PORT. Wouldn't be the first time and wire broke connection inside the connector. That said, what I'm talking about is...
  16. alldodge

    Adding 100+hp. Would you re-prop ?

    Ouch - Bon Jovi - shot thru the heart 😱 "Shakey finger" - at ya My 95 Rinker is a bit lighter but it was pulling 4 solemn ski's up all the time, even pulled 9 at one time, but the other 4 were knee boards and twin ski At any rate, my 300hp 454 gets me to 60mph You tell Em 😁
  17. alldodge

    1993 Volvo penta 431 no power from alternator to fuel pump

    OK, Being a carb I'm wondering if its similar to the GL I have diagrams for the GL and they use 2 diodes (Start and Run). This diodes should be found at or near the fuel pump relay Having the 2 diodes would not explain the "no light up" because this would come from the ignition key. As...
  18. alldodge

    1993 Volvo penta 431 no power from alternator to fuel pump

    What is a motor serial number? Did a search on the 431 and it comes up as a V6 and a V8
  19. alldodge

    Volvo Penta D4 300 problem

    Don't know enough about the system @muc would. Since everything works on STRB but not PORT, then I would look for a bad or broken connection. Something isn't able to send of receive signal and/or power
  20. alldodge

    Help a new guy out . Pcv valve

    Yes The link shows the pic The one in your pic does the same thing. The hose just needs to be near the arrestor, vacuum from the motor does the rest
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