BMW 116i 118i E87 N43B16 Carbon Intake Valves Guide
BMW
2007
N43B16 1.6 122PS
⚡ Quick Summary
Severity Level
Medium
Safe to Drive?
⚠️ Drive with Caution
Safety Impact
Indirect risk — worth monitoring, not urgent
Urgency Level
🟡 Monitor Closely
The N43 direct injection engine in E87 116i/118i accumulates carbon on intake valves above 60,000 miles. Rough cold idle and P0300 misfires confirm the fault. Walnut blasting costs £250-450.
Repair / Solution
No confirmed fixes yet. Share yours below.
⚠️ Wrong Diagnosis?
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this BMW 2007 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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