Fuel quality, coolant leaks and the oil pump belt
M139Rough running on poor fuel, coolant loss, or an oil pressure warning.
This engine is unusually sensitive to fuel quality — it is a hand-built, highly stressed four-cylinder and it will tell you about cheap petrol. The recognised weak points are coolant leaks, the turbo pipework, and an oil pump driven by a belt rather than a chain.
Parts this needs
Checked against cararac.com

