I have a APD 1250 Max Flow Throttle Stop Dominator that leaks CO2 at the "Down Power", one inch long 1/4-20 adjuster that threads into the back of the air cylinder on the carburetor.

I added a small amount of silicone to the threads of the adjuster then added a small "O" ring between the lock nut and the cylinder. It still leaks and will discharge a 10oz. bottle very quickly unless I turn off the bottle immediately after every run. Per the APD instruction, the pressure is set at 100#.

Any suggestions on how to stop the CO2 leak would be appreciated.

Bob

Air_Pump_System

^^^ Yea but that's not going to fix the leak, just drain the battery because the compressor is always running^^^

Try Loctite 567, Industry standard. Or try some plumbing thread seal tape.

This message has been edited. Last edited by: markemark,

Make sure the fitting doesn't bottom out in the hole before it fully tightens...if it is, try shortening the fitting a few threads..

I have a few air leaks I have been chasing myself on my car what are you using to find them glass cleaner does not seem to bubble u very well

^^^^^^^ Soapy water applied with a tooth brush

I finally sealed the fitting (1/4-20 adjustment bolt) with a second coat of silicone. Couldn't find the Loctite 567 locally so I gave the silicone another try. I'll check the seal with some soapy water tomorrow to be certain. This thing will drain a 10oz bottle in a heartbeat.

Thanks for the help.

Bob

You can get the 567 at Amazon

I use red loctite on nitrous and c02 fittings. It comes apart just fine, and seals instantly.

The soapy water process showed very little leakage so I timed the pressure drop on the gauge. The pressure drop is very slow at 100# but it still leaks even with the second application of silicone.

Ordered Loctite from Amazon, thanks for the idea Steve.

Bob