GRS foot throttle hissing air even when not being used?

[jenniferhughes]

hello all,

i have a second hand graversmith, bought off a friend who said it was barely used and to be fair it looks in good nick. however after setting it up with a compressor (hyundai 24l oil free) i find the compressor re filling far to quickly, every 10 minutes or so, i can't seem to find a leak with any of my tubes connecting to the compressor and ive done the bubble test. the compressor isn't the issue as when i first got it i turned it on and it kept its pressure completely fine.

i have always noticed that the foot throttle hisses air, i know it does that when depressed when using it, but this is when i'm not even touching it. i've located the hissing air to the progressive bleed shaft, and even if i have it set to the right mm distance (7-8mm) when i tighten the screw it hisses even more! i dont want to have to buy a new pedal as that's about 200 quid, please help im going crazy trying to figure out how im losing air as my compressor really should not need to refill this much

 

[sam]

They bleed a bit of air by design. If you're concerned that it's too much, ring them up or check out their YouTube channel for adjusting foot pedals.

 

[jenniferhughes]

thanks! when you say they bleed air by design does that mean even if you're touching the foot pedal?

ive watched their adjustment videos and made sure mine is tuned the same, but i dont think i can call their helpline as im in the uk?

 

[alwayslearning2012]

but i dont think i can call their helpline as im in the uk?

Actually.. it would be an international call, but you can call them M-F 8am - 5 pm CST. A real person will answer (believe it or not) and connect you with someone that can help.

 

[rweigel]

GRS also has all the manuals available for download, if you want to troubleshoot the pedal yourself first. Sometimes it's the hose that leaks at the barbed connector.