OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Honda Engines Pressure washer engine's Honda GX390 remove gum from carburetor's internal

Dear All

I have got a Kartcher pressure washer 4000 psi 3.6GPM with Honda GX 390 ,,,,I have used 3 times so far and I forgot to drain petrol before store in its shed,,,,,basically it is new

Yesterday when I tried to clean the carburetor I realized it is badly covered with gum and I used a carburetor cleaner ,,,,it cleaned it but not completely clean


I don't have ultrasonic machine and I prefer not to use a harsh chemical ,,,,,what other suggestions can be considered ?

Thx

I've seen it suggested that in lieu of an ultrasonic cleaner you can simmer your parts in a pot on the stove top.
You don't want it boiling just simmering.
You'll want to remove any plastic and rubber o rings. Just put metal components in.
You'll want to use a gentle cleaner like dish washing liquid or something that won't eat the aluminium.
You'll probably want to do it outside if you can and you'll probably also want to avoid using the pot again for food.

Having said that I also don't have an ultrasonic cleaner so I normally just disassemble the carb fully (remove emulsion tubes and jets etc) and give it a going over with carb or brake cleaner and give it a scrub with a brass wire brush for the external parts and use a spray gun cleaning kit for the jets and tube and internal passages.
If it's really gummy (like a thick gel) I find acetone makes short work of it.
If that fails, I usually just replace the carb.