Hyundai Tucson: Crankcase Emission Control System / Positive Crankcase Ventilation (PCV) Valve
| Engine condition | Stop | Idle or Deceleration | Normal operating condition | Accelerating in the high load area |
| Intake manifold pressure | 0 | High | Appropriate | Low |
| PRV (Diaphragm) | Full open | A little open | Appropriate open | Considerable open |
| Amount of blow-by gas | 0 | A little | Middle | A lot |
| Diaphragm component part |
| |||
1.Remove the cylinder head cover.Refer to Engine Mechanical System - "Cylinder Head Cover")
1.Install in the reverse order of removal.
Description and Operation
- Description
A : Crankcase pressure regulating valve (PRV)B : Breather hoseC : Intake hoseD : Air flowE : Intake manifoldF : Cylinder block
① Blow-by gas flow② Blow-by gas inflow to the c ...
Crankcase Check Valve
- Removal and Installation
• Be careful not to damage the parts located under the vehicle
(floor under cover, canister, fuel tank) when raising the vehicle using
the lift. ...
Other information:
Hyundai Tucson (NX4) 2022-2025 Owner's Manual: Lane Following Assist
Malfunction and Limitations
Lane Following Assist malfunction
When Lane Following Assist is not
working properly, the "Check Lane
Following Assist (LFA) system" message
may appear, and the
warning light
may illuminate on the instrument
cluster. Have the vehicle inspected by an
authorized HYUNDAI dealer.
Limit ...
Hyundai Tucson (NX4) 2022-2025 Service Manual: Rear Glass Defogger Printed Heater
- Inspection
Wrap tin foil around the end of the voltmeter test lead to prevent
damaging the heater line. Apply finger pressure on the tin foil, moving
the tin foil along the grid line to check for open circuits.
1.Turn on the defogger switch and use a voltmeter to mea ...
