A3 L4-2.0L DSL Turbo (CBEA) (2010)
2. If the fuel filter is not a serviceable unit (example: 2011+ Q7 TDI), then inspection must be performed at the fuel metering valve N290. If there is any
indication of fuel contamination, metal shavings/debris, or rust inside the N290 valve, call the Technical Assistance Center (TAC) and open a ticket
before attempting any repair.
Note:
Exercise caution when removing the N290. Any dirt/contamination entering the pump will cause irreversible damage.
^ Before removing the N290 carefully clean the surrounding area.
^ If there is no metallic debris found on the N290 or within its hosing, refit the N290 valve immediately. Make sure both 0 rings are undamaged. If there
is any damage to either 0 ring, the high pressure fuel pump must be replaced.
^ When fitting the N290, slightly wet the lower 0 ring with diesel fuel or oil.
^ Push in the N290 using only light pressure.
^ Tighten both M5 bolts hand tight - do not lubricate the thread.
^ Pre-tighten with 2 Nm, then 6.5-7 Nm.