Post
by mtntee20 » Mon Mar 27, 2023 11:08 am
The first start up after we acquired the Milk Delivery truck (the truck the Colorado State Patrol refused to verify the VIN) was a difficult endeavor. Once she started, there were NO mosquitos within a 10 mile radius. After running a while things improved but not as much as I would have liked. The second start up, was much better but she still didn't run well. Investigating, I found the carb. bowl with green stuff in it and the float level incorrect. Cleaned the bowl, set the float level, and proceeded to the sediment bowl screen, which I found clogged with green mung. Cleaned the screen and tried the start up again. Much better. She ran a little rough but with a little caressing, smoothed right out and ran pretty clean. Not great but much better. Further starts went downhill again. Back to the carb. and potato. More green mung but not as bad.
Yesterday, I drained and unbolted the fuel tank and tried to figure out how to get it out of the wood body. I came to the understanding, you have to strip the whole package down to the muffler bearing in order to get the tank out. I opted for cleaning in place. Poured in a bunch of acetone to dissolve any type of coating or mung in the tank. With the tank being loose, I could alternately raise each end to slosh the acetone back and forth. When draining the acetone, I saw a slightly milky, pale green concoction come out. I removed the potato and disassembled it completely. What a mess. The green mung appears to be from the bronze. The shut off petcock was covered with a very sticky green slime. The screen had minimal accumulation due to being cleaned earlier. The drain petcock was full of green mung. I cleaned everything with picks/scrapers, wire brushes, and finally blew it all out with air. The sticky parts were cleaned with acetone, lubed with EZ Turn, and reassembled. What a huge difference. I used Gasoila to lube/seal threads and put everything back together.
With the weather deteriorating, I cleaned up, packed up, and called it a day. When the weather warms up, I'll get some gas in the tank, check for leaks, and fire the old girl up to see how much she liked the attention. 2 1/2" snow here overnight and still snowing.
Still trying to figure out the green mung. There would have to have been a LOT of water in that potato to cause that much corrosion. I'm not saying it did or did not happen, I just find it hard to believe there would be that much water and still allow the engine to start and run. I run a mix of gas and 2 cycle oil, so we'll see if the corrosion occurs again. If so, the next time will be much easier as I'll just drain the gas, and remove the potato for inspection/cleaning.
Good Luck to you All