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  1. alldodge

    Continued issues with stiff powersteering

    Should not matter if the pump is full or empty of fluid with the motor OFF. The steering should be easy enough either way Is the flats on the ram straight up and down as in the pic (Fig d)?
  2. alldodge

    '99 MerCruiser MPI surging question

    The TPS and IAC work off of 12V. Can get to the contacts like Ted was talking about you could watch and see if they are changing
  3. alldodge

    120 Mercruiser 2.5L - No spark

    The bubble shouldn't be the issue with running. Only if there were a lot of bubbles it would effect running. I couple small bubbles every once in a while I wouldn't think much of. More then that, might be the pump diaphragm, hose fitting or hose clamp
  4. alldodge

    Compression Question

    With them all reading higher then 150, then it could be the gauge, so all good
  5. alldodge

    '99 MerCruiser MPI surging question

    It can be checked at the house.
  6. alldodge

    '99 MerCruiser MPI surging question

    It comes off the fuel pressure regulator and goes to the intake Vacuum line item 21 on regulator item 15 https://www.mercruiserparts.com/bam/subassembly/31918/2705/110
  7. alldodge

    Compression Question

    Pull plug 1 and see if its wet. Can also spin the motor over without the plug to see if anything spits out
  8. alldodge

    '99 MerCruiser MPI surging question

    Scanners cab be bought but there not cheap. Its either Techmate Pro or Diacom software all by Rinda https://www.rinda.com/marine/marinemenu.htm Don't think a tune up will fix the current issue, but wouldn't hurt Can check fuel pressure easy enough by renting a gauge from the local auro parts...
  9. alldodge

    Compression Question

    With cylinder 1 staying at 180, I would guess the head gasket blew or there is a crack
  10. alldodge

    '99 MerCruiser MPI surging question

    Being a 310 its a 7.4 MPI, thanks for the serial number Need to get a scanner on the motor to see what the IAC, TPS and MAP show during the surging. Check fuel pressure to see if its a 43 psi running. Then remove the vacuum line and see if it goes up a tad
  11. alldodge

    RPM issues can't get up to full speed

    It takes next to no gas to rev in neutral, takes a lot under load If the gauge is accurate then pressure is a tad high but only 5 psi. Spec shows GXI C thru G to be 50 to 60 psi. Was it 65 psi when on the water and under load? If new problem and you have not replaced the distributor cap, do...
  12. alldodge

    B3 Prop pitch recommendation needed please

    Load the boat as you would normally, then see if it will reach close to or at 5200 RPM at WOT
  13. alldodge

    Mercury EFI Flash Proplem

    Don't know of a shop which can reflash a 555ECM (They are locked). Not knowing your serial number but looking at others, I can see where the ECM can be replaced with a 60hp. What is the part number on the back of the ECM? https://www.mercruiserparts.com/bam/subassembly/28108/6993/35
  14. alldodge

    2012 mercury 90hp efi 4 stroke lower unit

    Ask a Mod to move this to the OB section, would get more input Look your motor up and see what parts. https://www.mercruiserparts.com/4-stroke-efi
  15. alldodge

    '91 Doral Prestancia 300 Steering frozen - Help!

    Were not able to see what the issues are but your mechanic might be correct. It may be possible to re-route the cable but the bend radius must not be increased in most cases
  16. alldodge

    Shift Interrupter

    Maybe but maybe not. In Fwd there is more load on the prop because the way the blades are shaped
  17. alldodge

    Mercruiser 3.0 runs strong for 45 minutes then loses power??

    Yes I'm thinking carb problems. A mechanical fuel pump won't work good for a while then start messing up and go back to ok later. Might start flooding
  18. alldodge

    Battery Switch question

    Yes Unless you install a ACR, then don't worry about it
  19. alldodge

    Battery Switch question

    Yes
  20. alldodge

    Mercury instrument install

    Many time you have to remove the grommet
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