I have always been told you can't fix anything with those automotive solutions-in-a-can. Perhaps unsurprisingly, I poured some fuel injector cleaner in my carbureted motorcycle and things got a lot better.
My 40 year old BMW always runs better when the carbs are clean. The worst thing you can do with that bike is let it sit with fuel in the carbs, which of course I had been doing. Slowly the bike was losing power. I was getting close to cleaning them in an ultrasonic bath, when on a whim I decided to try a can of BG 44k in my motorcycle. Naturally, I consulted internet forums for the recommendation.
I let the float bowls run dry and then I added the whole can to my 6 gallon tank and then filled up at my regular gas station. The bike started right up and ran normally. I went about my day. Around 40 miles later, as I was returning home, holding around 35 mph, I suddenly felt the bike surge and then continue to run smoother and stronger. It felt like something had distinctly changed.
The bike has continued to run with slightly improved power, much like it does after I've cleaned the carburetors! Perhaps I have. In the case of fuel injector or carburetor cleaning, it seems a safe bet that you can run a solvent through the fuel system that'll help remove the varnish and goop that blocks jets and injectors. That these cleaners may also, perhaps, burn off some carbon deposits in the combustion chamber seems well proven on youtube. It makes logical sense. When you think about what other cans of fix-all are doing, you may not want to add them to your car!
I'll definitely be running a can of BG 44k through the bike every year, thus far it has saved me some work.
