M42 car. Lil rough idle. Unplugged the vacuum line to the fuel pressure regulator, car still runs the same (plugged the line with my finger to not cause a rough idle from a vacuum leak). Probably a faulty FPR, right?
-
Originally posted by TSIOEM+ -
Maybe not. IIRC FPR only changes the pressure when you rev the engine. -
Fair enough. I'll rev the engine with it unplugged and see what happens.Originally posted by vpilarrt View PostOriginally posted by TSIOEM+Comment
-
Not as I understand it. FPR vacuum line keeps the fuel pressure linked to intake manifold pressure at
all times.
The only way to really tell is put a gauge on it, then unhook it and try pulling a
vacuum on it. Fuel pressure should be about 45 lbs - whatever vacuum you're pulling
on the port....
tnow, sometimes I just mess with people. It's more entertaining that way. george gravesComment
Comment