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Recent content by Thrashercharged

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    Mariner MagnumII 150 / Mercury XR4 2.4L water intake/inlet - where is it?

    So the poppet valve is on the starboard side? I'll take a picture tomorrow. I took the lower unit off to look at the water pump/impeller - it needs replaced. But I had a question about my missing "engine rotation compensation fin". In a YouTube video for "Impeller Replacement - Mercury 150...
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    Mariner MagnumII 150 / Mercury XR4 2.4L water intake/inlet - where is it?

    I took the housing off where I thought I'd find the thermostats and find no thermostats. And it doesn't look like it was intended to house a thermostat. Does my engine not have thermostats or are they elsewhere? She still doesn't pee water so I guess the next step is to look at the...
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    Mariner MagnumII 150 / Mercury XR4 2.4L water intake/inlet - where is it?

    I can't find my water intake (inlet)? Here's a pic: It's very different from every other XR4/Magnum II I can find on the internet which shows water muffs where I would normally expect the water inlets to be as shown in this photo I got from a YouTube video: As you can see, I don't have...
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    Mariner MagnumII 150 / Mercury XR4 2.4L carb/throttle linkage sync/adjustment

    I took the plastic throttle linkage off the 3 carbs to remove and clean each carb - engine now runs but idles way high. I know I didn't get this plastic throttle linkage on correctly - probably have the throttles cracked open. I notice it's slotted where the bolt to connects it to the...
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    Mariner MagnumII 150 / Mercury XR4 2.4L has spark but only fires once - doesn't start

    I have the engine in the title (Mariner version) that won't start. Originally it had no spark and I traced that down to the CDI switch modules (both had no spark). Verified trigger was good with an oscilloscope and stator was good. Just got new CDI modules and not I have spark. Now the...
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    What does "Bias" or Balance wire do between the 2 CDI switch modules?

    I have a Mariner Magnum II 150 / Merc XR4 2.4L that doesn't have spark in any cylinder. The trigger wheel and stator ohm out to spec. I've verified with a scope that the trigger wheel is good and the stator is outputting the correct voltage; it appears that both CDI Switch modules are dead. I...
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