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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBMW1987L7 (E23) L6-3430CC 3.4L SOHC (M30)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTEMISSION CONTROL SYSTEMSSERVICE AND REPAIRPOSITIVE CRANKCASE VENTILATION
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)
Positive Crankcase Ventilation
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)SECTION Positive Crankcase Ventilation
Servicing of the system is limited to periodic inspection of hoses and clamps. Any cracked or leaking hoses must be replaced. The valve cover should be checked to insure that accumulated sludge is not blocking the system. If this condition is present, the valve cover must be removed and cleaned in a suitable parts solvent, then installed with a new gasket.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.