Summit L4-1468cc 1.5L SOHC (1989)
2.
Plugged vacuum line or no source vacuum---replace line or repair vacuum source
9.
Stop the engine and check for a change in fuel pressure readings. Pressure should hold for 5 minutes. If the gauge reading drops, observe the rate
of drop. Determine the cause according to the following symptoms.
a.
Fuel pressure drops slowly:
1.
Injector leakage---Identify leaking injector and replace.
2.
Regulator is leaking to return line---Confirm and replace regulator.
3.
Check valve in the fuel pump is leaking---Replace the pump.
b.
Fuel pressure drops immediately:
1.
Regulator is leaking to return line---Confirm and replace regulator.
2.
Check valve in the fuel pump is open---Replace the pump.
