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  1. D

    rebuilt 175 Merc

    Have had problems tach-ing up. At times the engine runs great. We have replaced power packs and checked fuel supplly and pressure. Is this possibly the EFI computer? How can we check? Thanks, David
  2. D

    re-built Merc. 175 is difficult to tack up

    I have a newly re-built merc. 175 block sat onto a XR-4 - 150 lower unit. It starts up really good with the fuel injection system , however it is difficult to plane up. tack up . It seems to flood out or have throttle issues. It sounds as if the spark isn't advancing. I had one mechanic tell me...
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    175 Merc , difficult getting out of hole

    Thanks to all that offered help! I discovered low compression in cylinder one. Bore scoped, and saw scared cylinder walls. I don't know what is next, however, I am not very happy with the outfit that sold this engine to me as a newly rebuilt motor. Thanks, David
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    175 HP Merc / fuel injection / slow hole shot

    My new rebuilt 175 is placed onto my old 150XR4 lower unit. I have tried several props. The engine seems to load up with fuel rather than kicking up the RPM . The result is very , very slow to come to plane. Once on plane, the engine performs great. Any ideas? Thanks, David
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