Checking the fuel pump check valve on an Audi A6 C5 (quattro)
I removed the fuel pump to physically check the check valve, since during a cold start (at temperatures below -10 degrees) it churns for a long time and does not start.
I removed the fuel pump to physically check the check valve, since during a cold start (at temperatures below -10 degrees) it churns for a long time and does not start.