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    Do 470s (3.7/LX engines) have heat sensors?

    I have been struggling on and off with a Mercruiser 3.7LX which will run fine, we will stop, and then it will not start up. This weekend.. we cruised for about 30-40 min at a low throttle up to the marina. Stopped the boat, got the kids ice cream (about 10 minutes max) and the boat would not...
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    Do mercruiser 3.7 / LXs have heat sensors?

    I have been struggling on and off with a Mercruiser 3.7LX which will run fine, we will stop, and then it will not start up. This weekend.. we cruised for about 30-40 min at a low throttle up to the marina. Stopped the boat, got the kids ice cream (about 10 minutes max) and the boat would not...
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    How do I tell if I have a Tach Short or a bad Tachometer

    This is a continuation of the thread at [1]. I have gone through the sticky at [2] and have discovered that the grey wire was causing the engine not to fire. I have continuity from the grey wire on the coil to the grey wire which goes into the tachometer. Is there any thing I can do to tell if...
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    Mercruiser 3.7/LX will crank but not turn over.

    In an earlier thread [1] I asked about the neutral kill switch. I found it on the engine block, and figured I was fine because I could un-screw the wires to bypass it if I every got stuck again. We went out several times, no issues :) I am a new boat owner, but learning. This last weekend we...
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    Mercruiser 3.7/LX will not crank after stopping

    I have a 1988 Bomber with a Mercruiser 3.7/LX and an original (I think) quicksilver throttle. I have noticed that the neutral safety is a bit picky, as when I am running it i have to giggle the handle sometimes to get it to start. I have noticed very consistently, that if I ski for an hour...
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    Mercruiser 3.7/LX Coolant Questions

    I am a new boat owner who selected the (I know now) infamous Mercruiser 3.7LX. I am pretty sure I have a coolant leak, but I am always willing to ask dumb questions so here we go: 1) How much coolant should it use in a given 4 hour day of skiing/tubing? I went about 6 trips and then went out...
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