2,4D -2009: Ticking/rattling noice when accelerating

peeke · Mar 5th, 2012, 08:42

Hi

I have a V70 2,4D -2009 with manual gearbox, that have a strange noice when accelerating on low revs on gear 4,5 & 6.

It's like a ticking/rattling noice that appears when the engine is "working hard on low revs"

It sounds much like old petrol engines did when the timing of the ignition was wrong or if you put petrol in with low octane. Translated from swedish we call that sound "Spiking", I'm not sure if this is the correct term in english...

The car is 3,5 years old and this sound started 6 months ago. First it was very hard to hear, but i feel it gets louder avery month.

The car is in for service today, but I got the feeling that the guy that took the car did not have a clue of what was wrong with it. I bet he's going to say that there is nothing wrong with it this afternoon...

thanks
/Peter

peeke · Mar 5th, 2012, 10:58

does anyone have a clue of what is wrong? read some other forums with theories of AC-compressor and a wheel that puts pressure on some belt in the engine... any other sugestions?

Rick Barton · Mar 5th, 2012, 11:16

Quote:

Originally Posted by peeke

It sounds much like old petrol engines did when the timing of the ignition was wrong or if you put petrol in with low octane. Translated from swedish we call that sound "Spiking", I'm not sure if this is the correct term in english...

In English it's called "pinking". I doubt that it applies to Diesels though. Sorry I can't help with the problem.

5cilinder · Mar 5th, 2012, 11:27

Pinking can happen with diesels too when the fuel is injected too early and the fuel burns to concentrated to create shockwaves that translate in sound an pressure peaks

Mar 5th, 2012, 08:42	#1
peeke New Member Last Online: Mar 6th, 2012 12:52 Join Date: Apr 2009 Location: Stockholm	2,4D -2009: Ticking/rattling noice when accelerating Hi I have a V70 2,4D -2009 with manual gearbox, that have a strange noice when accelerating on low revs on gear 4,5 & 6. It's like a ticking/rattling noice that appears when the engine is "working hard on low revs" It sounds much like old petrol engines did when the timing of the ignition was wrong or if you put petrol in with low octane. Translated from swedish we call that sound "Spiking", I'm not sure if this is the correct term in english... The car is 3,5 years old and this sound started 6 months ago. First it was very hard to hear, but i feel it gets louder avery month. The car is in for service today, but I got the feeling that the guy that took the car did not have a clue of what was wrong with it. I bet he's going to say that there is nothing wrong with it this afternoon... thanks /Peter

Mar 5th, 2012, 10:58	#2
peeke New Member Last Online: Mar 6th, 2012 12:52 Join Date: Apr 2009 Location: Stockholm	and the question is... does anyone have a clue of what is wrong? read some other forums with theories of AC-compressor and a wheel that puts pressure on some belt in the engine... any other sugestions?

Mar 5th, 2012, 11:27	#4
5cilinder Premier Member Last Online: Today 05:43 Join Date: Oct 2011 Location: Groningen	Pinking can happen with diesels too when the fuel is injected too early and the fuel burns to concentrated to create shockwaves that translate in sound an pressure peaks

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