00 1.8 Decoking - Glacier
A friend has just picked up a Carisma 1.8GDI for a couple of hundred quid and I notice on HJ review it mentions about carbon build up in the engine.

Would Seafoam motor treatment or Ecotek Power Boost help?

www.seafoamsales.com/motorTuneUpConsumer.htm
www.ecotekplc.com/power_boost.htm
00 1.8 Decoking - DP
For a couple of hundred quid, if it runs OK, I'd leave it well alone.

Cheers
DP
00 1.8 Decoking - Glacier
True.

He could probably get a refund on the 11 months tax and get most of his money back!
00 1.8 Decoking - Screwloose

The rock-hard carbon builds up in the inlet tract; so no whizzo product will touch it.

The head and manifold need taking to a specialist cleaners - crushed walnut shells are reputed to be quite effective.