Integra L4-1678cc 1.7L DOHC (VTEC) FI (1992)
Vacuum Brake Booster Check Valve: Testing and Inspection
1.
Disconnect brake booster vacuum hose at booster.
2.
Start engine and allow to idle.
3.
Vacuum should be indicated, if not, check valve is faulty.
4.
Replace check valve and retest.