Peugeot / Citroen 1.6 THP engine maintanance
How to keep your THP engine healthy and happy Keeping your THP engine healthy and happy is a simple process. All you need to do is follow some key points in its maintenance. We hope this guide will help extend your engine’s life. Prince engine codes covered are EP6-DT, EP6-DTS, EP6-CDT, EP6-CDTX, EP6-CDTM and EP6-FDTX.
The stock intercooler unit on the Peugeot 207 is very small. All the turbo versions share the same one, ranging from the smallest diesel turbo engines, up to the most powerful in the range – the Peugeot 207 RC / GTi. For reasons of economy of scale, all these cars share the same intercooler/radiator assembly.
Combustion residues on the intake valves – what to do? Direct injection engines, such as the EP6-DT and EP6-DTS by Peugeot/Citroen, suffer from combustion residue buildup on the intake valves.  This is a very common problem with all direct injection engines nowadays. Because fuel is injected directly into the combustion chamber, it does not go