REMOVAL & INSTALLATION
1170cc and 1237cc Engines
The fuel pump in the Civic is located in back of the engine, underneath the air cleaner snorkel.
- Remove the air cleaner and cover assembly.
- Remove the inlet and outlet fuel lines at the pump.
- Loosen the pump nuts and remove the pump.
Do not disassemble the pump. Disassembly may cause fuel or oil leakage. If the pump is defective, replace it as an assembly.
- To install the fuel pump, reverse the removal procedure.
Check the following items.
- Looseness of the pump connector.
- Looseness of the upper and lower body and cover screws.
- Looseness of the rocker arm pin.
- Contamination or clogging of the air hole.
- Improper operation of the pump.
- Check to see if there are signs of oil or fuel around the air hole. If so, the diaphragm is damaged and you must replace the pump.
- To inspect the pump for operation, first disconnect the fuel line at the carburetor. Connect a fuel pressure gauge to the delivery side of the pump. Start the engine and measure the pump delivery pressure.
- After measuring, stop the engine and check to see if the gauge drops suddenly. If the gauge drops suddenly and/or the delivery pressure is incorrect, check for a fuel or oil leak from the diaphragm or from the valves.
- To test for volume, disconnect the fuel line from the carburetor and inset it into a one quart container. Crank the engine for 60 seconds at 600 rpm, or 40 seconds at 3,000 rpm. The bottle should be half full (1 pint).