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    1985 85 hp force

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    1985 85 hp force

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    1985 85 hp force

    Thank you so much!!
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    1985 85 hp force

    Just traded for one of these, an 856F5A. Excellent condition, missing controls. Is there a range of years and models I can look at for controls?
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    1978 Johnson 70HP head scratcher

    That's what I'm confused about. I can't exactly say either way whether it's making a difference, but it failed a pressure test. It's a knock off pump so that's my suspicion.
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    1978 Johnson 70HP head scratcher

    Thanks for the input. I check where the diagnosis leads me, not listen to some hillbilly on the internet.
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    1978 Johnson 70HP head scratcher

    Ok an update. Here's what I've done. Replaced the power pack. There was 0v from the power pack to the coils using a DVA. Now the boat fires right up, practically the first turn of the key. Replaced the spark plugs. They were NGK, got the proper champions in there and correctly gapped. Now...
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    1978 Johnson 70HP head scratcher

    Called CDI, they said to DVA the coil wires out of the power pack. If below 150V, replace the power pack. They had nothing, so I guess it's the power pack.
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    1978 Johnson 70HP head scratcher

    Despite amazing wisdom to the contrary, I ordered new reeds. The service manual says an allowance of 0.010" is ok, but I had read elsewhere that if you see light through them they are bad. I figured I was already in there so... I had to order new intake gaskets anyway to replace the ones I took...
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    1978 Johnson 70HP head scratcher

    It's possible my timing light is fried. It's approximately one billion years old.
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    1978 Johnson 70HP head scratcher

    Yes it was, but I will check again. The key and keyway are fine, also. My timing light is old, so who knows, maybe it got crossfire interference. I haven't been able to replicate it since then, and I don't think a powerpack would cause that.
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    1978 Johnson 70HP head scratcher

    I know, it's supposed to be pretty uncommon. I checked for debris; nothing there, they are clean. Like I said, just the first cylinder is leaking, but it does it consistently. And that's the one with the reed hung open, even if it's a pretty small opening.
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    1978 Johnson 70HP head scratcher

    Yes I tried the magnets. Will ohm test the triggers and get back.
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    1978 Johnson 70HP head scratcher

    Actually it's 0.010". So what you are telling me is that crankcase pressure, even very high pressure, should be allowed to vent through a carburetor, even when it does it on no other reed box besides the top one? That's hard to believe. All the other reeds are sealed tightly against their...
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    1978 Johnson 70HP head scratcher

    I think I'm going to replace all of the reeds. Any suggestions or just go with stock? My DVA comes in tomorrow so that I can double check everything else. Wouldn't surprise me if there were multiple problems.
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    1978 Johnson 70HP head scratcher

    Well, the cyl 1 reedbox has a leaking reed. Found it during a cylinder leakdown test. Pics attached, you can see light coming through it despite being a bad pic. Checked all the other reeds as a comparison; they were fine. Reed leak
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    1978 Johnson 70HP head scratcher

    Ordered one last night, it'll be here Monday. Going to get to the bottom of this, it has become personal.
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    1978 Johnson 70HP head scratcher

    Man I've already replaced the head gasket. And inspected the cylinders. And checked the head. And the block. And replaced the exhaust manifold gaskets. And checked them.
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    1978 Johnson 70HP head scratcher

    Ya do you think it's worth getting a dva?
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    1978 Johnson 70HP head scratcher

    Oh I see what you are seeing. I went out and looked, it's a weird reflection from some of the glue.
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