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MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG ZR ZS ZT Technical - Coolant problems with K Series

It is probably one of the most common threads on here that the Kseries engined Rovers and Mg's have a coolant problem.
The main reason for Headgasket failures is because of overheating of the Engine. Coolant levels in the Expansion tank only needs to drop 13mm for a risk of Headgasket failure to occure. Causes can be any of the following so get them all checked out !

1, Pressure caps not holding correct pressure.

2, Most obviously - leaking pipes, hoses or Radiators.

3, Plastic Inlet ManifoldS Leaking - some just need new gaskets but it has been known for the Manifold itself to have a crack or wear where the coolant runs through it.

4, Heater Matrix leaks in the footwell inside the car

5, Cooling fans do not work when engine reaches certain temperature.

6, Cooling system not been blead up correctly and does not circulate round efficiently causing "hotspots"

7, Coolant pumps leaking

8, More seriously Cylinder liners have hairline cracks that are very difficult to detect.

9, Pre 2000 reg cars- Head located down with plastic dowels and not steal ones, causing slight movement of the head when engine is running and causes silicon beading on headgasket to wear.

Numbers 8 and 9 are not now where near as comon as the others and are normally a last resort of nothing else is found.
Martyn

bought a k series 1.4 (p reg)then noticed rad fan disconnected, connected it back up to notice it stays on constant please help
steve

This thread was discussed between 21/12/2006 and 29/01/2007

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