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  1. alldodge

    Engine no power under load

    The carb uses vacuum to open the secondaries. If the motor is not getting full power then the vacuum is weak. A weak vacuum will not open the secondaries
  2. alldodge

    Engine no power under load

    Something is clogged up but don't know where
  3. alldodge

    Engine no power under load

    Then your tank vent is clogged. Normally if the tank vent is clogged it will run fine for a while, can be an hour or 2 then start bogging down. If the vent was disconnected and it runs good, and when reconnected it starts bogging almost right away there could be other issues Which is it?
  4. alldodge

    Engine no power under load

    Scott I think he's talking about a 4BBL carb and the rear barrels are not opening.
  5. alldodge

    Engine no power under load

    What do you mean it worked fine after the vent line was disconnected? The antisiphon valve is connected directly to the tank. Its a barbed fitting which the rubber fuel line is connected to that goes to the fuel filter. It has a spring and check ball inside which can get clogged up and stick...
  6. alldodge

    Engine no power under load

    New pump doesn't mean it is pumping like it should. If the antisiphon valve is sticking then it will be unable to suck fuel very well out of the tank. If pickup tank tube has an issue then same problem. If the inside of a fuel line has collapsed, same issue. If the carb is clogged up...
  7. alldodge

    Engine no power under load

    Have you looked at the carb or checked fuel pressure?
  8. alldodge

    Mercruiser 350 mag mpi losing fuel after 30 seconds

    With it just taking 30 seconds I would suspect somethings clogged or fuel pump. Check fuel pressure at the rail Pull the fuel filter and dump contents into something clear so you can see if there is nothing but clean gas. When removing the filter note if its full of gas or a bit below full...
  9. alldodge

    Help with Caravelle 209 Volvo 5.0 PFES

    My bad, I edited it, keep thinking Merc and then noted it was VP and didn't go back and change it. I changed it now I would fined a place to clean and flow test the injectors
  10. alldodge

    Help with Caravelle 209 Volvo 5.0 PFES

    Code 12 is a self test and means the self test is ok Code 44 is ECM does not see any activity. This can be caused by a bad knock sensor, bad connection between sensor and ECM. The code will not reduce power but does sound alarm. Another is having similar and see post 27 for explaination...
  11. alldodge

    Help with Caravelle 209 Volvo 5.0 PFES

    Need to scan for codes, can use a resistor LED or a mulitmeter with tone at the DLC connector. Jump the 2 pins at the DLC connector to active scanning, turn key ON (don't start) then watch light or meter for flashes/tones. Example; 14 will show up as flash, short pause, flash, flash, flash...
  12. alldodge

    Help with Caravelle 209 Volvo 5.0 PFES

    The PEFS is good to know but the G(and letter) is more important. Serial numbers are best. Noting mentioning watching the injectors indicates TBI so probably a Gi Compression is high but that could be your gauge, good thing is they are even. Does the fuel pressure stay around 30psi as RPM is...
  13. alldodge

    Merc 8.2l guardian seawater pressure fault code 328

    No Sir, but all good
  14. alldodge

    Volvo Penta 3.0 GLP Stalling when reducing from high RPM.

    Your idling high (about 1000) and needs to bring RPM's down slowly or it will stall. In most cases its the carb, but only if everything else is set correctly and no other issues. Put a vacuum gauge on the intake and see if its low. If low it may have a intake leak. Then checking timing, if...
  15. alldodge

    Merc 8.2l guardian seawater pressure fault code 328

    No, the poppet valves regulate the amount of raw water used for cooling. If they stick open then the Mans stay cooler then needed or other things. Don't know if your open or closed cooling but here is open cooling. Its for SBC but similar to BBC
  16. alldodge

    Merc 8.2l guardian seawater pressure fault code 328

    Not sure what pressure you should be reading but 5 to 6 psi at cruise would seam low to me. I have non-Cat 8.2 MPI and installed a mechanical pressure gauge on the Block, which I get 20 some psi at cruise and around 3 to 5 at idle. You may have an issue with the poppet valves bleeding off to...
  17. alldodge

    VP 5.7 Gi-J three or 4 sparks only

    Hey @muc we need your expertise S/N 4012227089 = GI-300-J ECM 3594195
  18. alldodge

    Ignition timing 5.7 gs 3869058

    Thanks for the S/N shows GSPEFS Your right, point and shoot, and should be 8* but I don't a VP manual which states that, only Merc manuals stating the same
  19. alldodge

    Windlass and modifying the forward bulkhead

    Looks good
  20. alldodge

    07 Optimax PCM sounding continually

    Not sure anyone can repair the PCM but could contact boats unlimited and ask John if he can https://www.boatunlimited.com/
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