hi, i have turbo in my integra ls 2001. and the boost guage is already installed but the needle isn't working. anyone know how i can fix it? or know wut i should check to help me fix it.

 

is the gauge hooked up to a vac source?? is it a mechanical gauge or electronic???

 

Make sure the line isnt pinched anywhere as well. Sometimes you can take the gauge itself out, and hook it up to an air compressor (ie. bike pump) to make sure it is reading correctty, if everything is cool with the line (and connections).