Top 10 Maintenance Alerts for Mercedes 4 and 5 Cylinder Diesel Engine Heads

This includes the 220D, 240D, 300D, 300CD, 300TD and 300SD diesel models from 1969 to 1985. For you diesel owners, there may be a couple in here that you are not aware of. For links to the products and solutions discussed in each alert, click on SHOW MORE.

1. Loose cap bolts: https://mercedessource.com/store/search?keys=diesel%20engine%20oil

2. Pre-chamber fuel leaks: https://mercedessource.com/store/search?keys=prechamber

3. Valves won’t adjust: https://mercedessource.com/store/search?keys=valve%20adjustment

4. Loose and leaking manifolds: https://mercedessource.com/store/search?keys=diesel%20manifold

5. Oil leaking by valve guide seals: https://mercedessource.com/store/search?keys=valve%20guide%20seals

6. Avoid excessive pre-chamber carbon build-up: https://mercedessource.com/store/search?keys=reamer

7. Stop valve cover oil leaks: https://mercedessource.com/store/search?keys=diesel%20valve%20cover

8. Oil leaking out of head gasket: https://mercedessource.com/store/search?keys=diesel%20head%20gasket

9. Broken glow plug in head: https://mercedessource.com/store/search?keys=glow%20plugs

10. Cracks in the cylinder head valve seat areas: https://mercedessource.com/store/search?keys=cylinder%20head

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