Carbs sticking when HOT

[97explorer717]

As title says. Wanted to make sure I'm not overlooking anything. Did a search even on other forums and nothing came up. "Fuel" butterflies sticking when hot. Second rebuild on these carbs. I didn't use the approved Mikuni kits on first build. They weren't sticking after first rebuild. I can run it as is. Guess the vibration throttles them down. That seems dangerous and I want them right. Engine hot not running and hit the throttle it sticks wide open. When it's cool it's fine and springs back. Each individual carb will stick when hot with linkage and cable unhooked. Gaskets appear to be centered from what I can see. Carbs springing back in hand are excellent. Also neither clamp or zip tie is interfering with carbs. I did that once and that's the first thing I checked. Am I missing something? Has anybody else ever experienced this? Not really crazy about pulling these carbs back off for the tenth time but will!

 

[JeremyD615]

Are there grooves in the carb body where the butterflies have been making contact? They can create a bit of a lip over time and get stuck when things start to expand...

 

[97explorer717]

Are there grooves in the carb body where the butterflies have been making contact? They can create a bit of a lip over time and get stuck when things start to expand...

Not in this set. I have a set that does have grooves and some pitting. As far as I'm concerned I'm just going to use them for parts. Another member recommended grinding the back off the screws and pulling them out. Guess I'll do that, inspect them, clean up and lube. Guessing there's some bushings in there. Be nice if they're available to purchase.

 

[Chester]

Saltwater eventually gets into the throttle shaft bores and corrodes the aluminum. This squeezes the throttle shafts. You can remove the throttle shafts and the bushings to clean out the shaft bores. Or, just replace the carbs with freshwater carbs.

Chester