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  1. M

    Mercruiser 7.4 L Mpi L29 MISS FIRING in Bayliner 2855 Cierra

    got injectors back from RC injector service out of Torrance, Ca. today and they were able to save all 8. highest flow cc was 251.0 lowest was 250.0, avg 250.4 system balance is .4 4 were found to be dripping 2 had poor flow 2 had bad patterns and sub par flow. plan to put them in over the...
  2. M

    Mercruiser 7.4 L Mpi L29 MISS FIRING in Bayliner 2855 Cierra

    <br><br>"MAKO" I saw that on wiring schematic last night, one set port and starboard - front and rear injectors controlled by one set of output leads from ECM and one set starboard and port - front and rear injectors controlled by the other set of leads, so doesn't make sense that one lead...
  3. M

    Mercruiser 7.4 L Mpi L29 MISS FIRING in Bayliner 2855 Cierra

    Engine serial number 0L373392 Merc 7.4 mpi 2000 2855 Ciera SUN BRIDGE approx 300 hrs on engine. Started missing, out of the blue, had been a while since tune up so replaced rotor and cap (showed corrosion) still has miss. Pulled plugs and port side plugs looked to be covered in black soot but...
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