General Category > Quadrajet Carb Talk and Tips

Carb cleaning

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texczech:
I have a ultrasonic cleaner and have always wondered what is a good chemical/ solution to use to clean carbs? Sometime I have cast iron carbs from tractors also. It is a heated unit, that I put an inserted heater to speed things  up when getting started.

Cliff Ruggles:
I use a tablespoon of Dawn dish soap and another tablespoon of purple degreaser in mine.  That's in apprx 5 gallons of water......

old cars:
I use Evergreen A-44 if it is a rebuild carb. This will not remove the factory plating. Keep in mind any carb  that has thick baked on dirt or grease will need scraping/brushing prior to ultrasonic.
https://benefect.com/ca/products/evergreen-a-44/

For carb restorations (replating) I use SC-80. This ultrasonic cleaner will remove the chromate and zinc finish.
https://www.qcss2000.com/products/fireline-sc-80.html

To be honest I have no idea if these are any better than Cliff's recipe.
I don"t even bother with the ultrasonic sometimes when doing a restoration. I go straight to the media blaster. And restorations is mainly what I do.
I have used ultrasonic cleaners that cost $300. to $5,000 machines you could fit a whole engine block in, with the same chemicals.

texczech:
How much of each chemical do you use to a gallon more or less? How I tell if the carburetor is chromate or zinc "plated"? If it is plated, is the plating on the outside only? Does removing this plating hurt anything or cosmetic? Would like to know more about the effects of removing this plating and how to tell if the carb has it! Thanks for the response!

old cars:
What kind of carburetors are you doing besides tractors?

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