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  1. J

    JOHNSON V4 90/65jet

    Looking for some advice. Here's the scenario. When full throttle boat goes on plane runs fine for about 40seconds then just drops off plane doesn't stall out just seems like i have a cylinder or 2 dropping out. I checked fuel prime i am not losing fuel bulb is hard and by choking when this...
  2. J

    Johnson V4 Powerpack question

    Model number of engine is J90TLETS........V4 90hp/65 jet.. Original problem was motor was running at what appeared like 25% of normal operation speed. Power pack was replaced all is well running on hose however now when its put on full throttle on water it reaches full speed up on plane the cuts...
  3. J

    Loss of power

    Running my 1993 Johnson v4 90/65jet have loss of power issues. Starts fine idles sweet my problem occurs at full throttle boats goes up on plane runs for a time(usually the same amount like 30 seconds) then a sudden bog like i lose 80% of power and come off plane. Almost like all a sudden no...
  4. J

    V4 90/65 jet loss of power issue

    Hoping for some advice here. Was having engine symptoms like running at half power not on all 4cylinders.(Johnson v4 90/65 jet) Took to local shop 4 new plugs timing adjustments and a new power pack. Was told power pack was cause of issues. Now runs well except i still get loss of power on full...
  5. J

    motor in gear when in neutral

    I have a 93 johnson v4 90/65 jet drive.. Lately when i start the engine in neutral with open choke the engine creeps forward. The gate appears fully closed when in neutral and opens properly when engaging the throttle. Is there a timing linkage that would be causing this? I am new to the jet...
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