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MOTRS

MGF / MG TF

1995-2011 / Roadster / United Kingdom

All MGF / MG TF problems All workshop problems
Minor Head Gasket Failure (K-Series Engine)

How to Fix It

Parts for a thorough job run $800--1,500 AUD. Fitted by a specialist, expect $2,000--3,500 AUD depending on what else is found. DIY is achievable for a competent home mechanic -- the engine is accessible in the mid-engine bay, and the job is well documented in the community.

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Other known issues

Minor Head Gasket Failure (K-Series Engine)

What Happens
Minor Head Gasket Failure (K-Series Engine)

Why It Happens
Minor Head Gasket Failure (K-Series Engine)

Severity
Critical Cooling System Issues

Expansion Tank Cracking

Coolant weeps or sprays from a crack in the plastic expansion tank. The tank may split suddenly under pressure, dumping all the coolant. Coolant level drops with no apparent engine fault.
Minor Cooling System Issues

Thermostat Failure

The engine overheats, particularly at sustained speeds. Alternatively, the engine never reaches operating temperature (thermostat stuck open), which causes poor fuel economy and increased wear.
Critical Cooling System Issues

Water Pump Failure

Coolant leak from the pump weep hole. Bearing noise (grinding or whining) from the pump area. Overheating from reduced coolant flow if the impeller corrodes or the bearing seizes.
All MGF / MG TF problems