Civic L4-1590cc 1.6L SOHC (VTEC) (1992)
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Heater Control Panel: Adjustments
Def Door Adjustment
DEF Door Adjustment
Set the heater control switch on HEAT for adjusting DEF leak (shut 20%).
1. Loosen the adjusting screw.
2. Turn the adjusting link in the direction as shown as far as it goes.
3. Tighten the adjusting screw.