- Joined
- May 14, 2018
- Messages
- 2,059
- City
- Western Mass.
- Vehicle Year
- 1994
- Engine
- 3.0 V6
- Transmission
- Manual
- Tire Size
- 225/70/R15
- My credo
- If it's not broken Don't Fix It!
To know if the schrader valve is bad is either they leak or the pin in the center is unable to be pushed down to release the pressure. The adapter should have a small piece of metal that pushes down on the pin, if this is missing then the valve is not opening allowing the pressure to enter the gauge. When you disconnect the pressure gauge you should get a small amount of fuel that spills out, did you get this with your last attempt? Just watch for these things on your next attempt to know that the pin is being pressed.