Merc 115 Stuck at 2000 rpm

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  • #16
    Running VRO. I rechecked compression which is 90 psi across all cylinders. Spark is great off the plugs. 260 volts across each coil. Throttle linkage is clean and operating normal. All carbs open in sync with the throttle. Does this mean I have a fuel issue?

    Being a 2+2 carb setup, is it reasonable to think the issue is with the bottom 2 cylinders?

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    • #17
      Originally posted by Metallife89 View Post
      Running VRO. I rechecked compression which is 90 psi across all cylinders. Spark is great off the plugs. 260 volts across each coil. Throttle linkage is clean and operating normal. All carbs open in sync with the throttle. Does this mean I have a fuel issue?

      Being a 2+2 carb setup, is it reasonable to think the issue is with the bottom 2 cylinders?
      Yes, one of them ain't working correctly, weird thing, if you adjust carbs it will idle on 1, ask me how I know!

      If it idles ok then definitely no. 3 or 4 isn't hitting.

      Weird outboard now matter how much I defend it, in my opinion it's a very strong 115.

      BWP

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