Bogo
FOOF
OK, played with water and carb cleaner today. I used the aspiration method. That is a ran a line from the plugged vacuum port to where I could aspirate up some fluid out of a jar and simultaneously press the gas pedal. I revved the engine up to 3k RPM and started to aspirate water in. I aspirated in about 16oz. The engine ran a bit better in some ways, and seamed worse in others, and it definitely still wasn't smooth. I then tried spray carb cleaner. I had some so what the heck. I used it's tube to direct the spray into the vacuum line. It improved things a bit. I'd guess I used up a bit more than 1/2 a can. The engine still wasn't running as smooth as I'd like. Next I tried a really old bottle of gumout mix with fuel type carb cleaner. It had been laying around since the last time I ran carbureted vehicles over a decade ago. After 4oz of the stuff the truck was running allot smoother. It isn't perfect yet. Before doing the test, and after trying each fluid I drove the truck a good 10 miles on rural highways and gravel roads to gauge how it was acting.
Note: When I aspirated in the fluids, I didn't stick the end of the tube under the fluid surface. I held it just above the surface so the vacuum air sucked up a stream of it. I modulated the stream by how hard the engine was struggling to keep going. This way I kept a pretty good steady flow into the engine.
Would I use water again, no. The effect just wasn't enough. Compared to using the carb cleaners it was pointless and a waste of time. Next time I'd start with a quality in the tank carb and injector cleaner.
Note: When I aspirated in the fluids, I didn't stick the end of the tube under the fluid surface. I held it just above the surface so the vacuum air sucked up a stream of it. I modulated the stream by how hard the engine was struggling to keep going. This way I kept a pretty good steady flow into the engine.
Would I use water again, no. The effect just wasn't enough. Compared to using the carb cleaners it was pointless and a waste of time. Next time I'd start with a quality in the tank carb and injector cleaner.