engine problem?

Hydraulic tappet jacking! causing a valve, not to shut properly.Try some fresh oil, may be of a thinner grade!

yosser
June 2010

Paul,

I assume you meant when not cold it starts to get sluggish? If so check the air filter (if your air filter has a valve that opens and closes when hot or cold) check the air vlave is working (valve that lets air into the air filter).i have had a very similar problem with a ford but not an RS Turbo. (if need be change the air filter assy.

Martin
June 2010

I had a rattlesnake 1 of these years ago used to have same problem recur it ended up being the distributor breaking down try that mate

peesian
June 2010