I removed the nitrous system on my car and the little valve that screws in the scharder valve is missing , i must have threw it away or miss placed it. I tried a tire valve and that did not fit does anyone know what fits and the size. Thanks

 

One that fits the ac fill port may work..not positive though. But they are easily available at any autoparts store.

 

I got it the tire valve did fit. But i used a valve from a fuel pressure tester. Since it is designed for gas. Thanks