I have a 1997 hijet van 993cc which has recently begun overheating. Started with occasional boiling sound after engine stop, and getting hot while stuck in traffic. I have had a slight noise from the front of the engine for some time which I assumed meant either alternator bearing going or water pump. Took it for mot the other day and they said they couldn't complete test as it boiled over. Swapped fan switch (as fan had been temperamental occasionally) in rad today and still same although fan came on as it should. Re-filled rad with clean water to test, and as engine warmed up began running slowly back into expansion bottle but was frothy(?), no obvious sign of oil in water, or leaks anywhere, and engine seems to run ok, but seemed as though air in system or water boiling although correctly filled with bleed rubber above rad removed.
Methinks water pump probably gone, although would also like to replace engine side cap to be certain that is ok. Rang local dealer who quoted nearly £30 for just that cap! Will check if play at the end of the water pump pulley tomorrow and got friendly mechanic coming to look sunday. Anyone know what might fit as engine side cap that I can get elsewhere, and where to get a water pump if indeed it's that.
I know my local dealer just thinks of a price then trebles it for everything, but £30 for what is essentially a radiator cap (and have only just paid another £30 for the rad fan switch)!