Overheating

[TURNER]

HI ALL

LONG TIME NO SPEAK

JUST GOT ABIT OF A PROBLEM AND WITH ALL YOU MEMBERS HAVE A GOOD KNOWLEDGE OF CARS I THOUGHT I'D ASK THE QUESTION ON HERE

THE PROBLEM BEING THAT THE WIFES CAR A ROVER 400 HAS STARTED TO OVERHEAT AND NOT SURE IF THE HEAD GASKETIS ON IT WAY OUT

THE SYMPTOMS BEING THAT AROUND TOWN AND IN TRAFFIC ITS AT NORMAL TEMP BUT WHEN YOU GET ON THE MOTORWAY AND UP TO SPEED IT GOES UP TO THE RED

I'VE CHANGED THE ANTIFREEZE AND THERMOSTAT FLUSHED THE SYSTEM OUT AND REPLACED THE RAD AND HAVE NO AIR IN THE SYSTEM BUT ITS STILL THE SAME

ITS NOT LOOSING WATER OR OIL NOR IS GETTING WATER IN THE OIL BUT HAVE NOTICED THAT THEIR IS A LITTLE OIL COMING OUT OF THE REAR CORNER OF THE HEAD GASKET BUT NOT ALOT

WITHOUT STRIPPING THE ENGINE DOWN AND REPLACING THE GASKET WHICH ISN'T A OPTION AS THE REPAIRS WILL COST MORE THAN THE CARS WORTH

I'VE SEEN THAT YOU CAN GET THESE HEADGASKET REPAIRS IN A BOTTLE THAT YOU POUR INTO THE RAD AND WHEN THE CARS UP TO TEMP IT S SURPPOSE TO SEAL THE LEAKS

1, DO THESE WORK

2, IF SO WHICH ARE THE BEST AND HOW GOOD AND HOW LONG DO THEY LAST

3,AND DO THEY DO ANY DAMAGE TO THE ENGINE

MANY THANKS

ANDY

[Monster-Mat]

change the coolant cap, known issue

the engines are a pain to bleed properly

[TURNER]

CHEERS MAT BUT FORGOT TO PUT THAT DOWN BUT I HAVE REPLACED THAT TOO

ANY MORE IDEAS

ANDY

[Monster-Mat]

hmmmm......

ill have a think............

(turn of caps.......no need to shout)

[johnboy]

Hi Andy, long time no see.

Is it the 'K' series engine fitted ? if so, they are quite prone to headgaskets failing, especially for oil.

I seem to remenber the heads failing too, you could have a porous head, which would give you the symptoms you are getting.

The quick fix of adding to the coolant, might not work, due to the pressures inside the engine, ive never tried one, so dont know how good they are.

Sorry if it sounds major and i hope its not.

John