Zephyr L4-140 2.3L SOHC (1983)
c. If measured speed drop is less than specified minimum speed drop specification, leave mixture screws or venturi air bypass screw in the
adjusted position. Repeat curb idle adjustment and propane enrichment gain check procedure beginning at step 13. If within specification,
proceed to step 19. Speed drop test is required with propane enrichment procedure whenever vehicles have a zero gain and a zero
minimum gain specification.
18.
On all carburetors equipped with limiter caps, install new blue limiter caps in the maximum rich position. Ensure to use the right length caps.
19.
Check engine idle RPM and idle speed gain to ensure idle mixture screws were not disturbed during limiter installation. Correct if necessary.
20.
switch engine OFF and remove propane enrichment test equipment. Install purge tube and fresh air duct as required. Remove plugs from fuel
evaporative purge signal vacuum hose, connect fuel evaporative purge valve return hose at engine and install air cleaner, if removed.
21.
Remove plug from parking brake vacuum hose and install hose. Connect all thermactor hoses. Remove test equipment and check all engine system
connections.
