Tata DICOR (badge, not an engine)

inline-4 · turbocharged · diesel · 2005–present

Also known as: dicor, di-cor, varicor, vari-cor, 2.2 varicor

Tata's badge for its common-rail diesels — on the Safari, the Sumo and the Indica.

The name says Direct Injection Common Rail and nothing about which engine. In this catalogue's own rows it sits on two unrelated units: the 2.2 is a PSA DW12, which has a page here and a very large body of European experience behind it, and the 1.3 is derived from Fiat's Multijet, which has its own page too. Neither of them is findable by searching DICOR.

So the badge's practical value is narrow but real: it tells you the engine is a modern common-rail diesel rather than one of Tata's earlier indirect-injection units, which is a genuine dividing line in what can go wrong and how it is diagnosed.

On either engine the modern-diesel rules apply. A particulate filter blocked by short journeys, an EGR valve carboned shut, and injector seals are what bring these in — and a rising oil level on the dipstick is fuel dilution from failed regenerations, not a servicing error.

Establish the displacement first, because it is what selects which of the two pages to read.

Cars fitted with this engine

5 generations, across 1 make. From the authored catalogue — an absent car means the catalogue has not reached it, not that the engine was never fitted.

Tata

Information, not instruction

CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.

Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.

Posted about this engine

Be the first to write this up

Nothing posted about this yet. Whatever you found is worth writing down — even a dead end saves someone the same afternoon.

What makes one worth reading:

The car — make, model, year and engine. The same fault behaves differently on each.
What you measured, not only what you replaced.
What actually fixed it — or that nothing did, which is worth knowing too.