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What Problems Can Diesel Injectors Have?

Model: (Various brands) Various
Part: Fuel injectors

Video tutorial

What happens if the injector leaks into the cabin? It means that the injector is venting because the copper sealing ring is no longer holding. In fact, residues of unburnt diesel accumulate on this ring, and in the engine, then from there into the cabin, acrid exhaust gas smells are created.

Obviously, this gas is very harmful to our lungs. This unpleasant smell is accompanied by a very annoying metallic noise and an increase in fuel consumption.

What is the solution? It is to replace this copper gasket after cleaning and descaling the injector, of course. Here the YouTuber shows us the already cleaned injector housing.

Naturally, the longer you ignore these warnings, the more difficult it will be to extract the injector, which will be more caked, as unburnt diesel vitrifies and thus becomes practically a single block, and at that point, it will also be necessary to replace the injector.


Updated on 16 June 2026 by ScegliAuto


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by ScegliAuto

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