Escort L4-116 1.9L VIN 9 2-bbl (1986)
Accelerator Pump: Testing and Inspection
LEAKING DIAPHRAGM: Allow engine coolant to stabilize to ambient temperature. Start engine and immediately check for vacuum at the Temperature
Compensated Accelerator Pump TCAP valve. When the engine is cold, No vacuum should be present, (at the TCAP valve). Allow engine temperature to
reach a stabilized value and check to ensure that a vacuum greater than 10 in-Hg. is present at the TCAP valve. If the vacuum signal to the TCAP valve
is incorrect either in the hot or cold mode, check vacuum hoses, connections and the vacuum control valve. After a vacuum is verified, shut-off engine
and connect a six inch section of clear tubing (5/32-inch ID) between the TCAP vacuum hose and the TCAP valve. If no fuel is flowing, remove clear
tubing and reinstall vacuum hose to the TCAP valve, turn the engine Off.
HOT/COLD FUNCTION: With engine Off, remove carburetor air horn and air horn gasket. If the engine is warm relieve pressure on fuel inlet needle by
carefully depressing fuel bowl float, carefully remove float and needle assembly, remove enough fuel from the float bowl so that the TCAP bypass bleed
hole (fuel bowl side of TCAP valve) is just at or above fuel level. Remove the vacuum hose from the TCAP valve, actuate accelerator pump - at a
moderate to fast rate, observe fuel discharge out of TCAP bypass bleed hose. No fuel discharge should be observed from the bypass bleed. If fuel does
discharge, replace valve. With a hand operated vacuum pump, apply a vacuum greater than 10 In.Hg. to the TCAP valve. Actuate the accelerator pump
with a very quick action from idle to wide open throttle, fuel should be discharged from this bypass bleed. If fuel does not discharge, replace TCAP
valve. Reinstall float and needle assembly, air horn and a new air horn gasket. Tighten screws securely.
