I ran your text through Copilot, out of interest, and it says you are correct. I find Ai responses pretty good for quick confirmations.
Short answer:
Yes — 8 Nm + 270° is the correct official torque for EA288 injector clamp bolts, including your Leon FR 184 (CUNA). It is surprisingly low, but it is exactly what VW specifies for the stretch‑type M6 clamp bolt.
EA288 Injector Clamp Bolt Torque (CUNA / 184PS) Injector clamp bolt — 8 Nm + 270°
This applies to all EA288 engines (1.6 & 2.0 TDI), including CUNA.High‑pressure line union nut — 28 Nm The bolt is a TTY (torque‑to‑yield) stretch bolt, which is why the initial torque is tiny — the clamping force comes from the 270° angle, not the 8 Nm.
Why 8 Nm Feels Wrong (But Isn’t)
The bolt is M6, very small, and designed to stretch.VW uses this spec across all EA288 engines. Multiple independent sources confirm 8 Nm + 270°. Failures happen not because the spec is wrong, but because: The bolt was reused (never reuse TTY bolts). Threads in the head were already weakened. Excessive exhaust back‑pressure (>8 mbar) caused injector lift.
Practical Tips Before You Torque
Always use new bolts — never reuse injector clamp bolts. Clean the bore and seat thoroughly. Check for thread damage in the head; EA288 heads are known to strip if a bolt has previously loosened. If a bolt spins before reaching angle torque, the head threads are already compromised.
Quick Reference Table
Component Torque
Injector clamp bolt 8 Nm + 270°
High‑pressure line nut 28 Nm
