Protege L4-1839cc 1.8L DOHC (1990)
![background image](/mazda/protege/l4-1839cc_1.8l_dohc/Page-1059002.png)
Note: Do not compress the spring when measuring it with vernier calipers.
1. Measure the spring free length.
2. If not within specification, replace the spring(s).
Assembly procedure
1. Insert the throttle modulator spring, throttle modulator valve, and stop plug. Secure them with the stop pin.
2. Insert the throttle adjust plug, throttle assist spring, throttle valve, throttle spring, and throttle plug assembly.