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  1. R

    New Lower Unit Lost 10 mph

    We have a 2004 Kenner 21' with 2004 Mercury 150HP Saltwater EFI. We had a shop put a new lower unit on it when the original went to crap but we noticed some time after that we lost about 10mph off the top end. Seems to jump on plane the same. Looks like that motor could've come with 1.87:1 or...
  2. R

    2004 Mercury 150 HP EFI Saltwater and Smartcraft

    Can anyone offer some advice on adding Smartcraft gauges to this motor? I can find them for sale no problem but there does not seem to be much info on compatibility and such. For example, are all Smartcraft gauges the same as far as how they connect and which motors they work with? Do they have...
  3. R

    2004 Merc 150 EFI Saltwater New Fuel Pump Issues

    So we put a new high pressure fuel pump in the ole Merc today and now it won't stay running. Crappy part is it was running fine before that. We already had the pump and just doing some winter maintenance thought we'd go ahead since it was original. It'll start and run for a 30 seconds or so but...
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