Diesel Sound

[seefive]

Hello

 

I bought my first ever diesel car last year -  a brand new c5  2.0  hdi160, following Mk1 and Mk2 petrol c5's

 

Generally smooth and quiet, but is "growly" when crawling through slow traffic, slipping the clutch and letting revs build up. Sounds like an exhaust rasp. Is this normal? Will be going in for first service ( one year old) in May, so wold like opinions if possible

 

Thanks

 

 

[paul.h]

We've had 5 diesels so far - Xsara Picasso 2.0 hdi, 2 C4 1.6 hdis, mark 1 C5 2.2 hdi and mark 2 C5 2.2 hdi. When going slow I notice the diesel sound, a bit like a tractor, where a petrol engine would be quiet, but once moving they seem no worse than a petrol. If you open the bonnet and rev a diesel the noise level would worry you compared to a petrol the first time. On the few occasions I have used the C3 petrol, when stationary I have thought it had stalled having got used to the diesels.

 

If you have an exhaust rasp, maybe it has a fault or it has been designed that way - in our family is a C3 petrol 1.4 95bhp and the exhaust on that is a bit throaty/sporty which after a while I find a bit annoying. Before cleaner engines/dpfs, soot would build up in an exhaust and quieten it down, but not now.

[qman3428]

If the clutch is slipping then that is a fault!

[seefive]

Sorry, probably didn't explain that properly - I meant when I'm deliberately slipping , or riding the clutch to creep forward in very slow traffic. No problem with the clutch.This is when I notice the raspy."sporty" exhaust sound.

[qman3428]

The only thing I could think that is in play when slipping the clutch but not during general running is the clutch release bearing