Leon Mk1
| Test data, spark plugs |
| Engine identification letters | 1F | |
| Ignition timing | ||
| Verification value | 4…8 ° b. TDC | |
| Adjustment value | 6 ± 4…1 ° b. TDC | |
| Engine speed | 825…1025/min | |
| Firing order | 1-3-4-2 | |
| Spark plugs → Note | ||
| VW/Audi | 101 000 036 AB | |
| Manufacturer's designation | NGK BUR 5 ET BERU 14-8 DTU | |
| Electrode separation | 0,7…0,9 mm | |
| VW/Audi | 101 000 050 AB | |
| Manufacturer's designation | BOSCH W8 LTCR | |
| Electrode separation | 0,9…1,1 mm | |
| Tightening torque | 25 Nm | |
| 1) | Current version → Spare parts Catalogue |
