engine

Oil Separator/PCV

for 2017 Maserati Levante 3.0L V6 Twin Turbo · AWD

Editorial review:Chris Hackleman — Master Technician · 20+ years

Difficulty

Moderate

Time

2.2 h

Tools

Steps

✓Expert-verified. Personally reviewed and approved by OLP's master technicians (Chris Hackleman — 20+ years each). Always follow the vehicle's factory service information and torque specs.

Replace the oil separator/PCV valve system on the 2017 Maserati Levante 3.0L V6 Twin Turbo to restore proper crankcase ventilation and prevent oil consumption issues.

Warnings

⚠Allow engine to cool completely before starting work. Hot oil and components can cause severe burns.

⚠Oil will drain from separator during removal. Position drain pan appropriately.

ℹ️This engine shares platform components with Ferrari. Use only OEM or approved replacement parts to avoid compatibility issues.

Tools required

10mm socket and ratchetEssential

13mm socket and ratchetEssential

Torx T30 bitEssential

Flathead screwdriver

Needle nose pliersEssential

Oil drain panEssential

Shop towelsEssential

Hose clamp pliers

Torque wrenchEssential

Extension setEssential

As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Parts

Oil Separator/PCV Valve Assembly × 1 — Use OEM Maserati specification
Oil separator gasket/O-rings × 1 — Included with separator assembly or order separately
PCV hose clamps × 2 — Use OEM specification if damaged

As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Fluids

Selenia Racing 10W-60 — 0.5 qt

Preparation

Ensure engine is completely cool to the touch
Park vehicle on level surface and engage parking brake
Open hood and secure in open position
Remove engine cover by pulling upward on four rubber mounts
Disconnect negative battery terminal and wait 5 minutes for system discharge
Place oil drain pan beneath work area

Procedure

1
Remove intake air duct
Loosen the hose clamp at the throttle body connection using a flathead screwdriver or 7mm socket. Disconnect the mass airflow sensor electrical connector by pressing the tab and pulling away. Remove the intake air duct from the throttle body to airbox, setting it aside to gain access to the valve covers.
2
Disconnect PCV hoses from valve covers
Locate the PCV hoses connecting from both valve covers to the oil separator. The separator is mounted on the right side valve cover. Use hose clamp pliers or needle nose pliers to squeeze and slide the spring clamps back on each hose. Carefully twist and pull the hoses off the valve cover ports. Note orientation of hoses for reinstallation.
3
Disconnect oil separator outlet hose
Trace the outlet hose from the oil separator to the turbocharger intake manifold connection. Release the hose clamp and disconnect the hose from the intake tract. This hose returns cleaned crankcase vapors to the intake system.
4
Remove oil separator drain hose
Locate the oil drain hose at the bottom of the separator that returns separated oil to the crankcase. Position the drain pan directly beneath this connection. Release the clamp and carefully pull the drain hose off. Allow residual oil to drain into the pan. Plug the hose end with a clean shop towel to prevent contamination.
5
Remove oil separator mounting bolts
Remove the mounting bolts securing the oil separator to the valve cover using a 10mm socket. There are typically three mounting bolts. Support the separator with one hand while removing the final bolt to prevent it from falling.
6
Remove oil separator assembly
Carefully lift the oil separator assembly away from the valve cover. Residual oil will drain from the unit. Tilt it to drain completely into the pan. Inspect the mounting surface on the valve cover and clean any old gasket material or oil residue with a clean shop towel.
7
Inspect and clean mounting surfaces
Thoroughly clean the valve cover mounting surface where the oil separator seals. Remove all old gasket material and oil deposits. Inspect the valve cover for cracks or damage around the mounting area. Check all hose connections for cracks, brittleness, or deterioration. Replace any damaged hoses.
8
Prepare new oil separator
Unpack the new oil separator assembly. Verify it matches the original unit in configuration and connection points. Install new O-rings or gaskets onto the separator if not pre-installed. Lightly lubricate the gaskets with clean engine oil to ensure proper sealing.
9
Install new oil separator
Position the new oil separator onto the valve cover mounting surface, ensuring the gasket is properly seated. Align all mounting bolt holes. Insert and hand-thread all mounting bolts before tightening. Tighten the mounting bolts in a crisscross pattern to ensure even sealing pressure. Follow proper torque specification if available, otherwise tighten securely without overtightening aluminum threads.
10
Reconnect oil drain hose
Connect the oil drain hose to the bottom of the new separator. Ensure the hose is pushed fully onto the fitting. Position the spring clamp or worm gear clamp past the barb and tighten securely. Verify the connection is secure by attempting to pull the hose off.
11
Reconnect PCV hoses to valve covers
Reconnect the PCV hoses from the separator to both valve cover ports. Ensure each hose is pushed fully onto its respective port. Position and secure the spring clamps past the barbs on each connection. Double-check hose routing matches the original configuration to prevent kinking or interference.
12
Reconnect separator outlet hose
Connect the outlet hose from the separator to the turbocharger intake manifold. Push the hose fully onto the fitting and secure with the hose clamp. Ensure the connection is airtight as any vacuum leaks will cause drivability issues and fault codes.
13
Reinstall intake components
Reinstall the intake air duct between the airbox and throttle body. Reconnect the mass airflow sensor electrical connector ensuring it clicks into place. Tighten the hose clamp at the throttle body connection securely.

Reassembly

Reconnect the negative battery terminal and tighten securely
Check engine oil level and top off if needed with Selenia Racing 10W-60 to account for oil lost during separator removal
Reinstall engine cover by pressing down firmly on all four mounting points until seated
Verify all hose connections are secure and properly clamped
Ensure no tools or shop towels are left in the engine bay

Verification

Start the engine and allow it to idle. Listen for any unusual vacuum leaks or hissing sounds around the separator connections
Check all PCV hose connections for leaks while the engine is running
Verify no oil is leaking from the separator drain connection
Rev the engine to 2500 RPM and verify smooth operation with no rough idle or misfires
Check for any diagnostic trouble codes using a scan tool. Clear any codes that may have set during battery disconnection
After a short test drive, recheck all connections for security and verify no oil leaks have developed
Monitor oil consumption over the next 500 miles to confirm proper oil separator function

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