Power loss

2007 Ford Focus
Car: Ford Focus
Year: 2007
Categories: Engine & Drivetrain
Intermittent problem, happens if car is cold or hot.
sudden loss of power, engine will still tick over normally but any attempt to use acceleratoris met with following actions.

Engine will rev up to approx 2000 and then down to 1000 and keeps doing this. If you come off the accelerator it drops to idle speed and idles comfortably.

Tried once to force the issue by keeping foot on accelerator, after couple of minutes white smoke poured out of the exhaust.

currently only fix is to turn engine off, wait 5/10 minutes and when car starts its ok. There is no warning lights and a full diagnostic has raised no errors
Problem added: Nov 4, 2017 (6 years ago)
There are currently no solutions or suggestions for this problem.

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