Examination
1. Check the positive crankcase ventilation system valve and its connector for damage. Check the positive crankcase ventilation system hoses for leaks.
Engine D17A.
Engine K20A.
2. Set the idle speed, lightly pinch the hose between the valve and the intake manifold with your hand or pliers, and check for clicking sounds when the valve operates.
Engine D17A.
Engine K20A.
If there is no clicking noise, check the valve sealing rings for damage. If necessary, replace the valve and recheck.
Location of fuel vapor accumulator (2WD sedan model). 1 - valve (2-way), 2 - fuel vapor accumulator.
Location of fuel vapor accumulator (4WD sedan model). 1 - fuel vapor accumulator, 2 - valve (2-way).
Location of fuel vapor accumulator (hatchback model 2WD). 1 - fuel vapor accumulator, 2 - valve (2-way).
Location of fuel vapor accumulator (hatchback 4WD models). 1 - fuel vapor accumulator, 2 - valve (2-way).
Diagram of the forced crankcase ventilation system. 1 - forced crankcase ventilation valve, 2 - intake manifold, 3 - throttle body, 4 - air filter.
(Article source on the website hondabook)