I have a 1965 Vovo 544 Sport that is overheating. The radiator, thermostate and the water pump have been replaced. I have removed the head to inspect water passages and all is good. The water pump doesn't seem to pump very well, even though it is new. Anybody have any ideas?
Is the water pump brand new or is it from a scrap yard?....either way, it could be a faulty waterpump! :thumbs:
This may sound like a really daft thing to say, but have you replaced the
filler cap. Its really cheap and simple and they do wear out.
On one of my cars it just caused the system to not maintain full presure so the water boiled.