My mercury capri xr2 boost gauge reads zero all the time, but turbo seems to be working?
It had recent turbocharger replacement, and there is a whistling which sounds like sirens following me when i drive; can an air leak cause both problems? is the gauge mechanical or electronic, and should i hook up an aftermarket mechanical gauge to verify boost or is there a way i can check to see if the stock gauge is working? thanks gang!