OK, this is for those of us who are backyard mechanics: Back in the 60’s, Gunk had a carburetor bath that really worked. I remember putting a very dirty carburetor into this chemical, and the next day, it came out shinning like new metal. EPA must have had some influence, because today’s carburetor bath is, in my opinion, worthless. I have a carburetor from a small motor that was junked out in the weather for more than 5 years. Every moving part was frozen solid. None of the marketed carburetor cleaners worked. Repetitive applications of penetrating oil didn’t touch it. I complained about this to DW who remembered reading about a person who remembers his parents boiling dirty carburetors during the depression. Not having anything to lose, I put the carburetor in a large pot with soap (Dawn) and water and started boiling it. After two boiling sessions, the carburetor is fully functional! This carburetor also had a fuel shutoff solenoid that was frozen in the shut off position – yep after boiling, it now works perfectly! The carburetor is now back on the engine with its fuel shutoff solenoid and the motor starts and runs with no problems. All of the money I spent on carburetor baths and cleaners was wasted, and now I have a problem with where I am going to get rid of these chemicals. But with soap and water – no problem!
Also, a side note: The motor was also frozen, but putting Automatic transmission oil in the spark plug holes and letting it soak in for a few days, helps free the motor.
Well, dawn is petroleum based, so I figure since "grease cleans grease" by definition, yours is the perfect example.
