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Recent content by laurent

  1. L

    Fuel rail : diaphragm

    Hello everybody, I have a problem with my Mercury Optimax 225CV year 1999. My problem is the idle. RPM max is 4000 ! I inquired about recurentes failures of these engines and I found that the problem of air and gas diaphragm when they died cause idling problems. Indeed, during disassembly, I...
  2. L

    Mercury Optimax 225 DFI : IDLE PROBLEM

    I encounter a problem on my Mercury 225 hp. Idle is unstable. the engine starts badly at 4000 rpm, it goes down to 3500 rpm then goes back to 4000 rpm ....... Fuel pressure : 90psi Air Pressure : 80psi I don.t understand.!!!! Can you help me ? Sorry for the translation I.m French.
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