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by Crt_cc
Sat Oct 10, 2026 7:14 pm
Forum: MK7 (9N3) Polo (inc GTI) - Years 2006-2008
Topic: Pinging noise and hot engine 1.4 BBZ
Replies: 0
Views: 32

Pinging noise and hot engine 1.4 BBZ

Hello everyone, I need help on a VW Polo 9N3 1.4 BBZ.
The engine suffers from severe spark knock/pinging under load (around 2000 RPM) and runs excessively hot.

Here is the live data from OBD (Car Scanner):
• Long Term Fuel Trim: -23.4% at idle.
• Short Term Fuel Trim: -6% at idle.
• Engine Coolant ...