📋 Article Index
THE KNOWN PROBLEM ON THE 1.2 TSI CBZA/CBZB
In Skoda Fabia II 1.2 TSI (2007-2012) with engine codes CBZA and CBZB, a manufacturing defect is common: lack of sealant between the timing cover and the engine block.
Over time, this leads to engine oil leaks and possible contamination of the timing belt, increasing the risk of premature wear and serious engine damage.
MAIN SYMPTOMS
- Traces of oil in the timing cover area
- Smell of burnt oil after driving
- Oil stains under the car
- Possible abnormal noise if oil reaches the belt
TABLE OF SYMPTOMS, CONSEQUENCES AND COSTS
| Symptom | Possible consequences | Repair cost (€) |
|---|---|---|
| Traces of oil on the lid | Progressive leak, dirt in the engine compartment | 250 - 300 |
| Smell of burnt oil | Oil evaporation on hot parts, minimal fire risk | 300 - 350 |
| Oil on timing belt | Premature belt wear, possible engine damage | 350 - 450 |
HOW TO FIX THE DEFECT
The recommended repair procedure in the workshop includes:
- Remove the timing cover.
- Clean the mating surfaces thoroughly.
- Apply a 2-3mm bead of sealant to the edge of the lid (avoiding the areas indicated in the technical manuals).
- Reassemble the cover.
- Apply a thin coat of Loctite 243 threadlocker to the threads of the mounting bolts.
This procedure restores the seal and prevents further oil leaks.
Loctite 243 Threadlocker – 10ml
Essential for properly tightening the timing cover bolts. Prevents loosening and micro-leaks.
🛒 Buy it on AmazonPRACTICAL ADVICE
- Check the timing cover area periodically.
- If you notice any leaks, take action promptly to avoid damage to the belt.
- Always use quality sealant and follow OEM specifications.
FAQ – FREQUENTLY ASKED QUESTIONS
How much does it cost to repair a timing cover defect?
In the workshop, the average cost varies between €250 and €400, depending on the hours of labor and the materials used.
Can I continue driving with an oil leak from the cover?
No, it's risky. The oil can contaminate the timing belt and cause serious engine damage.
CONCLUSIONS
In my experience, the lack of sealant on the timing cover of the Skoda Fabia 1.2 TSI CBZA/CBZB is a known and widespread defect. The definitive solution is to disassemble it, clean it, apply sealant, and use Loctite 243 on the bolts. This work will prevent serious engine problems and extend the life of your car.
Written by Gianni Tritella
General Manager of Autoricambi Tritella . Over 15 years of consulting for garages and motorists on lubricants and spare parts. Testing and advice based on real data , OEM specifications, and professional diagnostics.
🕓 Last updated: · ⏱️ Reading time: 6 min
