Recent content by jlopvar

  1. J

    250 OX66 Trim Problem

    Port engine was not trimming up very well from down position. After unsuccessfully trying to assist engine up while activating up switch, saw a white foamy liquid leaking into the water from trim assembly area. Now engine wont move at all. Any help on diagnosis and fix? My original thought...
  2. J

    Seastar Helm Seals

    I have a front mount seastar hydraulic helm 5272 which is leaking. I bought the seal kit #5176. It has several seals...including one large gasket type seal that is roughly the same diameter as the helm itself. My question is whether the large seal is supposed to be used/replaced on my helm or...
  3. J

    2000 250 OX66 Idle Problem

    Twin engine set up...the other day at cold start up starboard engine goes to 1500+ rpms and never settles into normal idle rpm of around 700-800. At times it surged between 900rpms to 2000rpms but eventually settled to around 1000 rpms. After leaving dock boat ran fine in gear...but when in...
  4. J

    250 ox66 Rough/Low RPMS

    2000 250 EFIs. One motor was running rough/stalling and smoking so I recently did the following to both engines as preventative maintenance: 1) Decarboned with seafoam 2) Change low pressure pumps 3) Clean o2 sensor 4) New Thermostats 5) New plugs 6) Cleaned vst filters Now engines will not...
  5. J

    250 OX66 Stalling/Smoking

    Any help/thoughts on troubleshooting these problems would be appreciated, I am trying to avoid a $1000 bill on these engines. Twin Yamaha 2000 250 OX66s 1) Starboard Motor - was idleing very low (300-400 RPM) , surging, sneezing and stalling, but ran great at higher rpms. Changed low...
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