Quote Originally Posted by rspears View Post
Randy,
Sorry, I've been away from the discussion. Yes, the FPR modulates to control the amount of fuel returned to the tank, keeping the fuel rail pressure within control range. Fuel feeds the rail first, and the regulator is on the end of the rail where the return line connects.
is it possible to have a faulty or blocked shrader valve? I appear to have good pressure up to the line connection below the shrader valve. Tomorrow I'll pull the section of line with the shrader and test it for blockage, etc. Beyond that, I'm kinda clueless at this point....