The 'E' Type Forum

I would have gone with the tappet guides moving too... but its real hard to comment without actually hearing the noise. So I think I would recommend taking the car to a reputable Jaguar specialist and let them run the car up to 75+ to hear the noise and subsequently advise you... might be worth spe...

I have just remembered that a friend had a similar problem which turned out to be a loose tappet guide. It only happened when very hot, at which point the head expanded sufficiently to allow the guide to "float" . A holding down kit cured it Thanks for that, i will purchase one from SNG and fit it ...

How is the fan attached to the radiator? Is there any chance that the blades could be touching something? It seems odd that you only get the noise when the fan is on, but then only under load....hmmmm. I'm a huge XJR-s 6.0 litre fan as well!! Different sort of fan..... Mark Hi Mark, the fan is atta...

It just occurs to me : you are not talking about pinking ( knocking) under load when very hot are you? Funny enough its possible.. except the engine starts the tapping noise when its not under load, traffic lights etc and only when the temp reaches over 75+ under load and under 75 its ok? The noise...

Sounds like an air lock to me. Hi Heuer, i was thinking that too, which is why I purchased a air bleed valve from Rob Beere racing. Sits in the engine temp sender. Still even with that open I have had a collapsed hose from the Rad to the header tank with no heat going through to the other side of t...

Sounds like an air lock to me. Hi Heuer, i was thinking that too, which is why I purchased a air bleed valve from Rob Beere racing. Sits in the engine temp sender. Still even with that open I have had a collapsed hose from the Rad to the header tank with no heat going through to the other side of t...

When you say the noises cease as the engine cools , do you mean the noises continue to occur after you have stopped the engine. If so , then it sounds to me like a thermal expansion/contraction noise ( a louder version of the ticking noises all hot engines make when switched off), and is at a guess...

Hi first post and of course it has to be a problem. Fitted new alloy rad/alloy header tank new hoses new thermostat, new coolant with water wetter just in case!. When engine reaches 75deg+ the engine starts to sound like a sewing machine? Ready bad tapping noises from the head (I think) as engine co...