Recent content by Cpotts

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    Honda BF75L cooling water issues

    Used a good extractor to remove the acorn style nuts bolting the exhaust to the powerhead. BINGO The waterway down the exhaust was severely clogged. I had to use a screwdriver to scrape the packed on sediment out. There was lots of whitish hardened crud entirely closing the hole.
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    Honda BF75L cooling water issues

    stripped exhaust nuts were acorn style....they don't appear to be the originals. I finally got the appropriate nut extractor and was able to remove them
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    Honda BF75L cooling water issues

    never had the exhaust off. Unused internet pics of a removed exhaust to help illustrate. The oil pump cover has a weird looking single ball bearing . It might be a mute point however as it doesn't person directly to my issue. was just wondering what it was. You can see it better in this pic.
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    Honda BF75L cooling water issues

    had a little time today so I removed the powerhead. exhaust bolts are stripped so I can't get the exhaust off. .....argh!!! I'm so close to solving this problem. couple things: oil pump looks good except the little bearing on the cover (first pic). what's the function of that singular ball...
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    Honda BF75L cooling water issues

    click the text in those post...leads to YouTube vids from the inspection camera. or try these
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    Honda BF75L cooling water issues

    @km1125 thanks for helping man! I appreciate it more than you know
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    Honda BF75L cooling water issues

    Here's what it looks like going up the exhaust pipe. I with the camera could fit in that water hole. note the pinch weld inside the water escape hole. it the same weld you can see on the exterior pics of the exhaust pipe
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    Honda BF75L cooling water issues

    this is a video of the casting hole at the very bottom.. what I'm seeing is a) a water pathway coming in at the back ...presumably from the headsand b) a pathway going straight down to the exhaust. I'm guessing thats the major exit point to the exhaust. it lines up with the hole in the exhaust...
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    Honda BF75L cooling water issues

    the hole I'm pointing to in the photo of the block/head isn't in the diagram. I think we surmised that it's a casting hole in post 56.when everything is assembled, the hole in question at the very bottom is blocked off. it's in that hole I used the camera to see the downward path to the exhaust
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    Honda BF75L cooling water issues

    bypass water goes to the exhaust?? I thought it all flowed to the telltale. when you say smaller hole at the top, you mean the thermotat output hole right beside the tstat housing??
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    Honda BF75L cooling water issues

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    Honda BF75L cooling water issues

    I've been away for a while but I started looking at the engine again.... I dropped the midsection/lower unit so I could insert an inspection camera up the exhaust. I was able to identify where the water is supposed to come out...it's only about 3 or 4 inches from the tip of the exhaust...
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    Honda BF75L cooling water issues

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    Honda BF75L cooling water issues

    reassembled the engine and fired it up... the idle is a bit messed up (I'm guessing from all the disassembly) but she started 2nd pull. strong telltale kept hand on the head to guage temperature. the engine ran for maybe a minute longer then quit. Due to the heat, I had to remove my hand...
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    Honda BF75L cooling water issues

    ran some descaler through the appropriate waterways....into the thermostat output and as expected it came out the tiny hole at the bottom but then something peculiar happened I put a plug in the tiny hole in order to keep the solution in the waterway. my though was, the descaler would work on...
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