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MOTRS

MGF / MG TF

1995-2011 / Roadster / United Kingdom

All MGF / MG TF problems All workshop problems
Common Oil and Coolant Leaks

Coolant Rail O-Rings

Symptoms

Coolant weeps from the connections along the coolant rail on top of the engine.

Cause

The K-series uses a coolant rail with O-ring sealed joints. These O-rings harden and lose their seal over time.

Fix

Replace the O-rings ($10--20 for a set).

The coolant rail must be removed, which is straightforward.

Do this as part of any head gasket job.

Cost: minimal for parts, 1--2 hours labour.

Cost mentioned in fix
$10

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// More MGF / MG TF problems

Other known issues

Critical Oil and Coolant Leaks

Rocker Cover Gasket

Oil weeps from under the rocker cover, running down the side of the engine. Burning oil smell as it hits the exhaust manifold.
Common Oil and Coolant Leaks

Rear Main Seal

Oil leak from the junction of the engine and gearbox. Oil visible on the underside of the bellhousing.
Common Oil and Coolant Leaks

Oil Cooler Hose Connections

Oil weeps or leaks from the hose connections at the oil cooler.
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)

How to Fix It
All MGF / MG TF problems