Matiz making sound as though a K&n filter is present

rahul_intlad · 5th May 2007, 21:04

There is this strange noise from my car[daewoo matiz],somewhat like a K & N filter kind of noise when I am accelerating.This noise is not felt when the car is just idling.The first thing I did was get the exhaust checked by a mechanic ,he did not find anything wrong so I went to a person specializing in car exhaust's and he too did not find anything wrong with the exhaust and said that maybe the air filter was clogged.

This is the OE air filter replaced on a very recent service[3 months back],anyways my mechanic had the air filter cleaned by getting air blown on to it.But that too did not solve the problem and the car still makes noise.

I don't feel any drop in mileage and so also no problem with accelerating,however there is no improvement[just for the record].The source of the noise is a mystery for both my mechanic and me ,could anybody help.

mclaren1885 · 5th May 2007, 21:06

Its quite hard to identify the noise you are talking about .. Do check if you in any case have alternator whine due to stereo or something ..

rahul_intlad · 5th May 2007, 21:13

Thanks Rahul, I am kind of illiterate when it comes to technical details of car's so please forgive me if this sounds foolish.

Is it possible to have alternator whine even if the stereo is switched off,also what exactly is alternator whine.

mclaren1885 · 5th May 2007, 21:21

Maybe this should help :
Noise Prevention

rahul_intlad · 5th May 2007, 21:47

From the above linky,I am slightly confused it does not sound like a siren,the sound is more on the grounds of leaking exhaust kind,but yes the sound does increase with the speed of the engine and also when the car is driven for a while.

Quote:

For those of you who are lucky enough never to have been exposed to alternator whine, it sounds like a miniature siren that rises in pitch with the speed of the engine

hvkumar · 5th May 2007, 23:53

Are you sure that this is not (a) a wheel bearing wear-out hum, or (b) worn out timing bearing, or (c) Timing Belt tensioner.

The last-named can cause noise at higher speeds. I have run a Matiz for 2,60,000 kms (still my second car) and I have chnaged the tensioner at least 3 times. Exhaust noise is very tell-tale, you will have to diagnose whether this is a metallic, plastic, scraping or air noise.

Kumar

csentil · 6th May 2007, 00:20

Looks like a wheel bearing problem. You will not hear the noise at low speeds or when idling. But when you accelerate it will sort of sound like a sports car !! Had the same problem and got it replaced. After that it was fine.

elf · 6th May 2007, 02:12

Rahul, it seems that you may have an intake leak.

Check your intake hose, airbox & finally, your filter element. The service chappie may have blown a hole or torn the element in some way whilst cleaning it, leading to the intake growl you hear.

tsk1979 · 6th May 2007, 02:43

Rev engine at neutral, listen for sound.
Switch on AC and then rev, listen for sound.
If the sound lessens or sounds muted with AC on, or changes note, its the AC compressor bearing.

rahul_intlad · 6th May 2007, 11:18

Thanks everyone,today being an off day cannot get anything done.So will report in a few days time.

GTO · 6th May 2007, 11:32

Rahul, best thing to do would be to take it to a Chevy Spark dealer and have it checked. Chevy India had claimed that they will offer support to Matiz owners also. Going to the right place will save you a lot of time eventually.

Sankar · 6th May 2007, 13:40

From the description it does sound like an intake leak. It could be that the plumbing could have developed leak due to loose fitting or crack. The leak might be after the filterbox or before.. since you can't hear it at idle it might be before the airbox.

I had a similar sounding Maruti when i cut the round airfilter box to exposed the round filter.

rahul_intlad · 13th May 2007, 12:54

Sorry folks but I just Did not get any time the whole of last week,the car was unused for this period will go to the garage tomorrow.

mithun · 16th May 2007, 05:58

I'm having the same problem on my 6 year old Alto(40K KMS) and the service center is insisting for the complete replacement of the exhaust system. Should I go for it since the vehicle is about 6 years old ?

The sound is present both during idling & running.

adman77 · 5th June 2007, 13:18

Check for holes on your throttle pipe or hose. Maybe the problem lies there.

5th May 2007, 21:04	#1
rahul_intlad Senior - BHPian Join Date: Aug 2006 Location: Pune Posts: 1,579 Thanked: 4 Times	Matiz making sound as though a K&n filter is present There is this strange noise from my car[daewoo matiz],somewhat like a K & N filter kind of noise when I am accelerating.This noise is not felt when the car is just idling.The first thing I did was get the exhaust checked by a mechanic ,he did not find anything wrong so I went to a person specializing in car exhaust's and he too did not find anything wrong with the exhaust and said that maybe the air filter was clogged. This is the OE air filter replaced on a very recent service[3 months back],anyways my mechanic had the air filter cleaned by getting air blown on to it.But that too did not solve the problem and the car still makes noise. I don't feel any drop in mileage and so also no problem with accelerating,however there is no improvement[just for the record].The source of the noise is a mystery for both my mechanic and me ,could anybody help. Last edited by rahul_intlad : 5th May 2007 at 21:06.
	() Thanks

5th May 2007, 21:06	#2
mclaren1885 BANNED Join Date: Jul 2005 Location: Bangalore (the city of modded cars) !! Posts: 4,820 Thanked: 45 Times View My Garage Infractions: 0/1 (10)	Its quite hard to identify the noise you are talking about .. Do check if you in any case have alternator whine due to stereo or something ..
	() Thanks

5th May 2007, 21:13	#3
rahul_intlad Senior - BHPian Join Date: Aug 2006 Location: Pune Posts: 1,579 Thanked: 4 Times	Thanks Rahul, I am kind of illiterate when it comes to technical details of car's so please forgive me if this sounds foolish. Is it possible to have alternator whine even if the stereo is switched off,also what exactly is alternator whine. Last edited by rahul_intlad : 5th May 2007 at 21:16.
	() Thanks

5th May 2007, 21:21	#4
mclaren1885 BANNED Join Date: Jul 2005 Location: Bangalore (the city of modded cars) !! Posts: 4,820 Thanked: 45 Times View My Garage Infractions: 0/1 (10)	Maybe this should help : Noise Prevention
	() Thanks

5th May 2007, 23:53	#6
hvkumar Senior - BHPian Join Date: Nov 2006 Location: Mumbai Posts: 7,369 Thanked: 3,454 Times	Are you sure that this is not (a) a wheel bearing wear-out hum, or (b) worn out timing bearing, or (c) Timing Belt tensioner. The last-named can cause noise at higher speeds. I have run a Matiz for 2,60,000 kms (still my second car) and I have chnaged the tensioner at least 3 times. Exhaust noise is very tell-tale, you will have to diagnose whether this is a metallic, plastic, scraping or air noise. Kumar
	() Thanks

6th May 2007, 00:20	#7
csentil Senior - BHPian Join Date: Feb 2007 Location: Bangalore Posts: 1,349 Thanked: 38 Times View My Garage	Looks like a wheel bearing problem. You will not hear the noise at low speeds or when idling. But when you accelerate it will sort of sound like a sports car !! Had the same problem and got it replaced. After that it was fine.
	() Thanks

6th May 2007, 02:12	#8
elf BANNED Join Date: Jan 2005 Location: Bombay Posts: 1,039 Thanked: 13 Times View My Garage	Rahul, it seems that you may have an intake leak. Check your intake hose, airbox & finally, your filter element. The service chappie may have blown a hole or torn the element in some way whilst cleaning it, leading to the intake growl you hear.
	() Thanks

6th May 2007, 02:43	#9
tsk1979 Team-BHP Support Join Date: Feb 2005 Location: San Jose, CA Posts: 23,717 Thanked: 22,825 Times View My Garage	Rev engine at neutral, listen for sound. Switch on AC and then rev, listen for sound. If the sound lessens or sounds muted with AC on, or changes note, its the AC compressor bearing.
	() Thanks

6th May 2007, 11:18	#10
rahul_intlad Senior - BHPian Join Date: Aug 2006 Location: Pune Posts: 1,579 Thanked: 4 Times	Thanks everyone,today being an off day cannot get anything done.So will report in a few days time.
	() Thanks

6th May 2007, 11:32	#11
GTO Team-BHP Support Join Date: Feb 2004 Location: Bombay Posts: 70,518 Thanked: 300,706 Times View My Garage	Rahul, best thing to do would be to take it to a Chevy Spark dealer and have it checked. Chevy India had claimed that they will offer support to Matiz owners also. Going to the right place will save you a lot of time eventually.
	() Thanks

6th May 2007, 13:40	#12
Sankar Senior - BHPian Join Date: May 2005 Location: Location Posts: 5,766 Thanked: 9,054 Times	From the description it does sound like an intake leak. It could be that the plumbing could have developed leak due to loose fitting or crack. The leak might be after the filterbox or before.. since you can't hear it at idle it might be before the airbox. I had a similar sounding Maruti when i cut the round airfilter box to exposed the round filter.
	(1) Thanks

13th May 2007, 12:54	#13
rahul_intlad Senior - BHPian Join Date: Aug 2006 Location: Pune Posts: 1,579 Thanked: 4 Times	Sorry folks but I just Did not get any time the whole of last week,the car was unused for this period will go to the garage tomorrow.
	() Thanks

16th May 2007, 05:58	#14
mithun BANNED Join Date: Jan 2006 Location: Cochin Posts: 2,195 Thanked: 268 Times	I'm having the same problem on my 6 year old Alto(40K KMS) and the service center is insisting for the complete replacement of the exhaust system. Should I go for it since the vehicle is about 6 years old ? The sound is present both during idling & running.
	() Thanks

5th June 2007, 13:18	#15
adman77 BHPian Join Date: Mar 2007 Location: Mumbai Posts: 383 Thanked: 4 Times View My Garage	Check for holes on your throttle pipe or hose. Maybe the problem lies there.
	() Thanks