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  1. K

    Can I Upgrade My 2001 225hp Efi Mercury??

    I have a 2001 225hp EFI mercury outboard. The ignition ecm is part# 83004417s and the fuel ecm is part# 83004612s. I have noticed that the part numbers for a 2001 250HP EFI are for ignition ecm 83004417s, same as my 225HP EFI, and the fuel ecm part# is 83004613s. My first question is, would it...
  2. K

    Have I Been Had

    I blew my 2001 Mercury, 225HP EFI up last fall. I had a shop in Pennsylvania put a new power head on it, or so I thought. I have had trouble getting on plane and generally it doesn't run well after I do get on plane. I just bought a pressure gauge and find that I am getting between 90 and 95...
  3. K

    2001 Merc 225 EFI boggs down on take-off

    I recently put a new powerhead on my 2001 Mercury 225 EFI. Starts great and after a minute of idle, it will get on plane with no problems. I can run a few minutes, set down and it gets back on plane with no problems. BUT, if I have to idle through a no wake zone or any other low speed idle for a...
  4. K

    225 EFI sputters getting on plane

    I have a 2001 Mercury, 225 EFI that recently had a new powerhead installed. It ran great until it blew. Now, when I try to get on plane, it spits and sputters, but slowly gets on plane. Once on plane, it runs great, can stop and it gets on plane fairly well again. But if I idle for a couple...
  5. K

    225 Efi Fuel Pump Prime Time?????

    I Have A 2001, 225 Hp Efi. When I Turn The Key On It Takes 15 Seconds For The Fuel Pump In The Fuel Management System To Prime, Or To Kick Off. I Do Not Remember It Taking This Long Before. I Was Wondering If There Is A Set Time Peroid For This Pump To Prime. I Have Noticed That My Triton 21...
  6. K

    01 MERC 225 EFI (Bogs down) AT 1800 RPMS

    Recently had a new powerhead installed on my 2001, Mercury 225 EFI. Running break-in oil in the tank, the motor starts good, idles fine, but when I try to get on plane, it bogs out at 1800 RPMS. I have tried to test my Throttle Position Sensor, (without the harness, using two strans of cat 5...
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