Volvo Workshop Manuals
V90 L6-2.9L VIN 96 B6304S (1998)
Powertrain Management > Fuel Delivery and Air Induction > Fuel Filler Cap > Component Information > Technical Service Bulletins > Fuel Cap - Test Equipment > Page 1975
Checking hose to the vacuum pump and fuel cap adapter
Check so that hose on the vacuum pump and the fuel cap adapter is correctly installed.
Checking seal vacuum pump
Check vacuum pump seal by blocking the hole in the adapter with i.e. your finger and pump out the air. There must be no increase in pressure.
Installing the fuel cap
Fit the fuel cap on the adapter. Turn until you hear a click / ratcheting.
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