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    Mercruiser 5.7 V8 (1997) jumping RPM

    Thank you very very much for now! I own you a beer or 2.. ;) BR
  2. I

    Mercruiser 5.7 V8 (1997) jumping RPM

    Sorry to bother you, I'm not a mechanic :) Could you explain a bit more? Where is the sensor located then - on the inside of the distributor cap? So this module and connector are not the problem?
  3. I

    Mercruiser 5.7 V8 (1997) jumping RPM

    Hey, those are the pictures I took today. Not sure if it looks the same as on the parts page you gave me? As far as I know, this one has been there from ages ago, when I bought the boat and everything worked fine until now. BR, Manuel
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    Mercruiser 5.7 V8 (1997) jumping RPM

    Sorry, I will take picture of it tomorrow, when I go on a boat to clean it. Probably I'm mistaken yes. This is the picture of the motor serial numbers which I took last time. So the most possible solution would be a failure of a distribution sensor? And of course, the wire needs to go to the...
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    Mercruiser 5.7 V8 (1997) jumping RPM

    Hey, the sensor does not look like the one you linked me: https://www.mercruiserparts.com/892150q02-sensor-assy-ign but it looks like one on the picture I posted before (I will take a picture of it tomorrow, maybe I'm mistaken). Still it doesn't sound logical to me, why it would be running...
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    Mercruiser 5.7 V8 (1997) jumping RPM

    Hello and thanks! Yes, I can hear the motor and feel it, the tachometer is showing correctly and while RPM jump the boat shakes. From what I read on the forums, they say the max temperature should be around 85 degrees celsius. Flow should be good, since everything that includes water-cooling...
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    Mercruiser 5.7 V8 (1997) jumping RPM

    Hello, since I renewed my motor, I'm having problems with jumping RPM's. This is happening only when driving above 1700RPM until I reach around 3000RPM. RPM jumps every few seconds for about 300-400RPM (but not in the same time range). When going above 3000RPM or below 1700RPM or full throttle...
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