Engine idles when it is warm

Engine hammers / knocks when idling on the 1.4

My engine is hammering / knocking when idling if I have been driving for 3-4 minutes after a cold start. It can only be heard when the vehicle is idling (i.e. when the vehicle is stationary). It can also be heard when I start the engine again after about a quarter to half an hour after driving (e.g. after shopping), i.e. when the engine is still slightly warm. But as I said, it can only be heard when the vehicle is idling and the vehicle is stationary. After a long journey, when the engine has the correct operating temperature, the hammering can no longer be heard. It actually only occurs when the engine is slightly warm. Have a Golf IV 16V 1.4.

What can it be? I do not know.

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23 answers

@Alles. Thanks.

But for me it happens if I have driven for half an hour, for example, and turn it on again after 10 minutes. Despite the correct operating temperature. It also completely disappeared during the journey. Only, it is only there after the engine has started. If after driving (let's say after half an hour of driving) I let the engine idle and get out there is no knocking at all. But then after about 10 minutes when I start the engine again, it's back. It's just idle.

Does anyone have the same problem or can I help?

Hello - don't want to scare you, but it's the same for me! I have that clacking too .. When it is cold when standing and when driving under load ...

With me it now clacks even when it is warm under load, it wasn't like that before .. In the past it only clacked a bit when it was warm when it was idling .. You must have heard of it .. -> Engine damage -> Exchange engine!

A bush in the friendly gives you certainty!

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Originally written by golfbär

Sorry meant a VISIT to the friendly! ;-)

why don't you just let the engine clack ??? It won't be worse and as long as it drives, it drives yes. I think that's completely exaggerated, because you can install a replacement engine for a lot of money.

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why don't you just let the engine clack ??? It won't be worse and as long as it drives, it drives yes. I think that's completely exaggerated, because you can install a replacement engine for a lot of money.

That's actually true.

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There is also a clack of some valve, when you open the engine compartment there is a small black box, it comes out, this is a petrol overflow valve or something, no idea ... but that is really a clack as if someone knocks on a table with a pen ....

It is hard to believe, too. The black part is the activated carbon filter and there is a solenoid valve inside. The valve opens and closes quickly and this creates this clacking sound. Sometimes it clacks a little faster, then a little slower until it is completely gone. If that's it I wouldn't worry, it's normal

hello so i have the problem but only after i changed the clutch before i didn't have the problem.

let's check your transmission and clutch;) then it goes away like me

a friend of mine works at vw he thinks that it is normal at 1.4.

love Alex