Engine making noise

George Holmer · Aug 22nd, 2019, 17:57

My engine is making a drumming noise. At idle, it is slower and it gets faster as I rev the engine. I made a little film, hope it works.

Any ideas? Car is a Volvo V40 1.8 petrol 2002 manual.

[YOUTUBE]https://www.youtube.com/watch?v=o2Gz...ature=youtu.be[/YOUTUBE]

emtor · Aug 25th, 2019, 09:08

The intermittent sound from 0:00 to 0:09 sounds like the variable valve timing sprocket.
Then when you rev up the sound changes to a more gnarling sound.
Remove the plastic cover on top of the engine.
On the left hand side there's a valve with a contact on it.
Pull the contact out (the engine warning light will come on).
If the sound goes away it's the timing sprocket.
I drove my volvo for three years with a faulty sprocket and the contact pulled with no ill effects.

If it's the sprocket you need to change it along with the timing belt, auxilliary belt, rollers and tensioners and water pump.
This is the usual procedure since half the car is already dismantled.
Lots of work, but not at all impossible.
I did it successfully even if it was my first time.
Be smart and buy the volvo cam and crankshaft locking tools. Without these there's a chance the timing will be thrown off.

Aug 22nd, 2019, 17:57	#1
George Holmer VOC Member Last Online: Sep 16th, 2023 12:51 Join Date: May 2011 Location: Leuven	Engine making noise My engine is making a drumming noise. At idle, it is slower and it gets faster as I rev the engine. I made a little film, hope it works. Any ideas? Car is a Volvo V40 1.8 petrol 2002 manual. [YOUTUBE]https://www.youtube.com/watch?v=o2Gz...ature=youtu.be[/YOUTUBE] __________________ Current: 2004 LHD Volvo V40 auto Many, many previous Volvos including a V40, a 262C, 945 LPT Polar (Belgian spec), V90, 2006 V70 petrol, 740 TDI, 940 TDI, 850 GLT, C70 2.0GT and V70 D5 auto.

Aug 25th, 2019, 09:08	#2
emtor Member Last Online: Apr 4th, 2024 19:44 Join Date: Jan 2017 Location: Kalix	The intermittent sound from 0:00 to 0:09 sounds like the variable valve timing sprocket. Then when you rev up the sound changes to a more gnarling sound. Remove the plastic cover on top of the engine. On the left hand side there's a valve with a contact on it. Pull the contact out (the engine warning light will come on). If the sound goes away it's the timing sprocket. I drove my volvo for three years with a faulty sprocket and the contact pulled with no ill effects. If it's the sprocket you need to change it along with the timing belt, auxilliary belt, rollers and tensioners and water pump. This is the usual procedure since half the car is already dismantled. Lots of work, but not at all impossible. I did it successfully even if it was my first time. Be smart and buy the volvo cam and crankshaft locking tools. Without these there's a chance the timing will be thrown off. Last edited by emtor; Aug 25th, 2019 at 09:14.

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