Accord L4-1751cc 1800 EK1 (1982)
Dashpot: Testing and Inspection
Except 1981 Civic Calif. & High Altitude W/ Manual Trans.
1. Connect tachometer, start engine, and allow vehicle to reach normal operating temperature.
2. Except on 1982 models, check bypass speed (1976-79 except 1979 Accord & Prelude) or throttle opener speed by disconnecting vacuum hose
from throttle controller diaphragm (1976-77), throttle opener diaphragm (1978-79), or dashpot check valve (1980-81) and attaching vacuum pump
to diaphragm (1976-80) or disconnected hose (1981).
3. On 1982 models, disconnect vacuum hose from throttle controller and connect a vacuum pump to the controller.
4. Apply at least 16 in. Hg. vacuum (1976- 81) or at least 8 in. Hg. vacuum (1982). Engine speed should rise to specification within 30 seconds
(1976) or 60 seconds (1977-82). Engine speed should rise to:
1976 Exc. Civic 1200
3000 ± 500
1977 Exc. Civic 1200
With Man. Trans
2700 ± 500
With Auto. Trans
2200 ± 500
1978 Accord & 1978-79 Civic CVCC
With Man. Trans.
With Throttle Control Valve
2700 ± 500
Without Throttle Control Valve
2200 ± 500
With Auto. Trans
2000 ± 500
1979-80 Accord & Prelude
2500 ± 500
1980 Civic 1500
With Man. Trans
3000 ± 500
With Auto. Trans.
2800 ± 500
1980 Civic 1300
2800 ± 500
1981 Civic
With Man. Trans.
3500 ± 500
With Auto. Trans.
3200 ± 500
1982 Civic
1700 ± 500
1982 Accord & Prelude
2000 ± 500
5. If idle speed is too low, widen adjustment slot in dashpot speed adjustment lever (1976-79 except 1979 Accord & Prelude), throttle opener
adjustment lever (1979 Accord & Prelude and all 1980-81), or throttle controller adjustment lever (1982) with a screwdriver.
6. If idle speed is too high, narrow adjustment slot with long nosed pliers.
7. If idle cannot be adjusted or the diaphragm will not hold vacuum, replace diaphragm (1976-81) or throttle controller (1982) and retest.
8. For 1982 Civic 1300 with five speed manual transmission except Calif. and high altitude, proceed to step 17.
9. Disconnect the vacuum pump (1982) and reconnect vacuum hose. Raise engine speed to 3500 RPM and maintain for 2-3 seconds, then release
throttle suddenly and check if throttle arm fully extends in 1-4 seconds.
10. For 1982 models, if time is within specification proceed to step 17. If time is more than 4 seconds, check throttle controller linkage for free
movement then replace dashpot check valve and retest. If time is less than 1 second, proceed to step 11. For 1976-81 models, if time is not within
limits, proceed to step 23. If time is within limits proceed to step 45.
11. Disconnect hose from throttle controller and connect a vacuum gauge to hose.
12. Start and run engine at 4000 RPM.
13. If vacuum is at least 1.2 in. Hg., replace dashpot check valve and retest.
14. If it is not, check for vacuum at carburetor port.
15. If there is no vacuum, clean carburetor port and retest.
16. If there is vacuum, check vacuum line for leaks, blockage, or disconnected hose and recheck.
17. Disconnect coil secondary wire and turn ignition key to start. If controller operates, testing for 1982 vehicles is complete.
18. If the controller does not operate, check for voltage at the cranking solenoid valve.
19. If there is no voltage, check wiring and fuse. If they are not defective, replace the starter relay and retest.
20. If there is voltage, disconnect hose between cranking solenoid valve and check valve at solenoid valve and check for vacuum when cranking
engine.
21. If there is vacuum, replace the cranking solenoid valve and retest.
22. If there is no vacuum, check vacuum lines for leaks or blockage and, if these are not defective, replace check valve and retest. This completes
testing for 1982 models.
23. If throttle closes in less than 1 second, disconnect vacuum hose from throttle controller diaphragm (1976-77), throttle opener diaphragm