Took the carb off a '59 bigtwin two days ago. It was so gummed up that I had to put the whole carb in a vice and tap on the bowl a little to get it off. It was pretty bad. The inside was entirely coated with a hard brown film.
I immersed it in gumout carb cleaner for two days. When I took it out this morning the carb cleaner was a little tinted but most of the film was still there.
I scraped and scrubbed, tried aircraft remover, acetone, lacquer thinner and even put it in the dishwasher. Most of what I could reach was clean but the jets were still dirty and I don't have any pipe cleaners.
Finally I sprayed it with oven cleaner, came back ten minutes later and it was TOTALLY clean. I rinsed it with water and watched all sorts of crud come right out of the jets. GOOD STUFF!
It did seem to darken the aluminum a bit so it might not be smart so soak it too long.
I immersed it in gumout carb cleaner for two days. When I took it out this morning the carb cleaner was a little tinted but most of the film was still there.
I scraped and scrubbed, tried aircraft remover, acetone, lacquer thinner and even put it in the dishwasher. Most of what I could reach was clean but the jets were still dirty and I don't have any pipe cleaners.
Finally I sprayed it with oven cleaner, came back ten minutes later and it was TOTALLY clean. I rinsed it with water and watched all sorts of crud come right out of the jets. GOOD STUFF!
It did seem to darken the aluminum a bit so it might not be smart so soak it too long.
