Engine Oil on Injector Housing

Translated on 04-10-2026, 11:32.

Hello.
"On my Seat Leon TDI with the CUNA engine (184 hp), some oil is accumulating in the cylinder head cover, specifically around each injector. Is this harmful to the engine?"

Translated on 04-10-2026, 11:33.

Hi,

"My wife's CFFB also had a similar issue, and it turned out that the corrugated tube of the crankshaft ventilation system was worn."

Best regards, Rainer.

Translated on 04-10-2026, 11:33.

I will take a closer look at that. How can I participate in the forum permanently? I would like to directly support the forum with a financial contribution.

Translated on 04-10-2026, 11:34.

kiter wrote:

I will take a closer look at that. How can I participate in the forum permanently? I would like to directly support the forum with some money.

Praiseworthy, but unfortunately not practical due to the effort involved. You can take the "Blaumann test" (using the search function) or use the options now available during new registration.

Best regards, Rainer.