Engine Rattle

[matt200vvc]

Bit of a odd one, even stumped fred!

Clio 172 cup, when the engine is completely warmed up i have a rattle from it. It's not there when cold and takes about 20 minutes of driving before you can here it.

Sounds like its coming from the exhaust manifold area, but don't think it's there. When under the car the noise is louder - have checked the heatshield.

Any ideas what it can be? Sounds like a stone is trapped and can move about a fraction once it's heated up - hope that makes sense

Thanks for reading.

 

[oVerboost.]

I would check the exhaust itself the cat and the heatshield on the bulkhead too, if it always goes away when warm it would indicate it's a component rather then a shield etc.

 

[matt200vvc]

I would check the exhaust itself the cat and the heatshield on the bulkhead too, if it always goes away when warm it would indicate it's a component rather then a shield etc.

No the noise is only there once the engine has been running for about 20 minutes and fully warmed up. When cold there is no noise.

 

[matt200vvc]

as i say only on tickover, slight hint of the throttle and the noise completely goes!

any ideas please?

 

[Nicolasticity]

Have you changed the oil (type viscosity) recently? I got sold the wrong oil by a Renault Dealer when I did the cambelt and it was thinner than recomended and I was told to stop and flush immediately.

(Have a case registered with Renault in case it goes bang)

 

[matt200vvc]

Have you changed the oil (type viscosity) recently? I got sold the wrong oil by a Renault Dealer when I did the cambelt and it was thinner than recomended and I was told to stop and flush immediately.

(Have a case registered with Renault in case it goes bang)

Thanks for the reply, as it happens it was changed about 3k miles ago.

Fred did the oil change, so have no doubts the correct stuff was used.

Same velocity oil always used to, 5/40 iirc.

it's annoying! Everything points towards the heat shield. Really odd that it goes at the slightest bit of throttle.

 

[boldswede]

can you hear it inside the car?

 

[paddyyyyy]

I have a similar problem to this, it is only there on idle and it seems like a ticking. I can feel it through the clutch/brake pedal. Im finding it very annoying. Any help would be greatly appreciated.

 

[beij]

same here to! hopefully someone on here can help us lol