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  1. alldodge

    350 Mag MPI intermittent rough running.

    For open cool the part number is 805218T
  2. alldodge

    350 Mag MPI intermittent rough running.

    Yes, if it meets same spec. The isdue us knowing which one
  3. alldodge

    mercruiser 7.4 mpi can't figure out the ratio

    This is where things don't add up with WOT. Using the same prop pitch but a different ratio drives. The higher ratio drive will take off quicker but will over rev. The lower ratio drive will take off slower but will not over rev They cannot equal the same WOT RPM
  4. alldodge

    4.3 omc cobra no start

    Nothing shows up. Your getting spark on all cylinders at the plugs and its white or blue. Compression is good (130 or more) Motor is turning over fast enough (at least 300 rpm) Starting fluid does not help with fuel turned off
  5. alldodge

    4.3 omc cobra no start

    Not arguing with anyone that dwell is the best way, its not needed to get it to start. Doesn't need to be exact to get the motor to run. Something is missing
  6. alldodge

    4.3 omc cobra no start

    Air, fuel and spark = bang Something is not there, maybe bad wires or something else
  7. alldodge

    4.3 omc cobra no start

    If the carb is flooding then it will have a hard time starting. But normally there is at least a backfire. Stick a white or light color rag in the throat of the carb and then pump the throttle. Pull the rag back out and smell it, see if it smells like gas. It also should not discolor the rag...
  8. alldodge

    4.3 omc cobra no start

    Edit: wet is no good
  9. alldodge

    Exhaust Flappers too tight

    I'm searching part numbers at mercruiserparts.com Looking for any comments on supersession Wanted to see how the flappers fit or attempt to fit in location. I have a set of the flappers on the shelf, and they fit fine in my BBC Y pipe, but yours is a 1988, so I have nothing to compare
  10. alldodge

    Top speed

    Boat magazine list it reached 54.2 mph with the 5.7 efi
  11. alldodge

    Random knock over 4k RPMs...

    Wow, its a wonder your coupler is still working To get the drive off, you will probably need to raise the bottom nuts up
  12. alldodge

    4.3 omc cobra no start

    Where are you checking for spark? If checking at the coil wire, see if the rotor is turning
  13. alldodge

    Exhaust Flappers too tight

    Unable to find Y-pipe 44265C but I am finding 44266T1 which is superseded by 8M0115149 According to @achris link your using the correct replacement shutters https://forums.iboats.com/threads/mercruiser-v6-v8-i-o-exhaust-shutters-explained-only-applies-to-4-systems.641688/ Can you post a pic?
  14. alldodge

    Engine Cover Rehab

    Search Leather handles
  15. alldodge

    Adding cleats to a floating HPDE dock..

    Dock accessories https://www.cubedocks.com/dock-accessories.html
  16. alldodge

    9mm Ammo Recommendations

    Have not used it If your ok with not reloading could get Wolf 115gr
  17. alldodge

    mercruiser 7.4 mpi can't figure out the ratio

    Double check your tach
  18. alldodge

    mercruiser 7.4 mpi can't figure out the ratio

    I'm out of ideas what could cause it Same 22P prop, same rpm at WOT If the ratio was higher (2.0 or 1.8) then the prop would be spinning faster and would be going faster unless the prop has cavitation. If there is air getting to the prop from to high trim, or other method it would allow the...
  19. alldodge

    Stalls out on idle after 30 to 45 minutes. Mercruiser 4.3 TKS Thunderbolt V Alpha II

    Vapor lock doesn't happen with the carb, would need to be EFI or MPI The problem is the carb needs rebuilt again or adjusted The float can be adjusted correctly but the needle seat could be leaking. The carb has to much fuel in the bowl and this is the reason it drips and or floods
  20. alldodge

    mercruiser 7.4 mpi can't figure out the ratio

    If your using the boat speedometer then it could be its most likely doing the same as before, just the issue with the pickup hole in the drive. Might be partially clogged. Now if your using a GPS then I need to scratch my head some more :unsure:
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