Craftsman professional 14005 Manual Del Operador página 11

fuel pressure reGulator
10) The pump gauge should indicate 16-22" Hg.
Consult the vehicle's service manual for a more
accurate specification. No reading or a low reading
would indicate a leaky or plugged vacuum line, or
more serious engine problem.
11) Disconnect the vacuum pump from the vacuum
line, and plug the line temporarily. Connect the
pump to the vacuum port on the regulator.
12) Use the pump to apply vacuum to the regula-
tor while watching the gauge on the fuel pressure
tester.
13) Fuel pressure should increase one pound for
every two inches of Hg vacuum applied to the regu-
lator. If not, replace the fuel pressure regulator.
Turbochargers and Superchargers
14) For forced-air induction systems (turbochargers
and superchargers) switch the pump from "Vacuum"
to "Pressure" without disconnecting it from the
regulator.
15) Use the pump to apply pressure to the regula-
tor while watching the gauge on the fuel pressure
tester.
16) Fuel pressure should increase one pound for
every one pound of pressure applied to the regula-
tor. If not, replace the fuel pressure regulator.
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