Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diesel Models
The system consists of a vent hose to the cylinder head cover, a vent insert in the cover, a vapor separator in the air cleaner and a drain hose from the separator to the oil pan.
A check valve in the drain hose prevents vapors from rising up the hose. Crankcase vapors are drawn through the vent hose into the separator, then into the intake manifold. Excess oil drains to the oil pan.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.