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A250 cold start engine noise

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Old Nov 11, 2019 | 09:39 AM
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A250 cold start engine noise
A250 cold start engine noise,

when start the car under temperature around -5 to 2 C.( 35F) my engine has some noise, but if i start my car around 15C (58 F) the noise is much less noticeable, looks like the noise is relates with outside temperature.

and A250 owner or A220 owner has this noise?


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Old Nov 21, 2019 | 05:40 PM
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That's fairly loud. I've started my car in as low as 23 F and it's always been pretty quiet.
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Old Nov 21, 2019 | 09:31 PM
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Originally Posted by Kenyon1976
That's fairly loud. I've started my car in as low as 23 F and it's always been pretty quiet.
i got my car checked at dealer, they said, it's high pressure fuel pump making that noise.....
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Old Feb 4, 2020 | 01:46 AM
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MB W177 A250 4Matic
Its normal noise for such engines, more complicated than others more parts to get it better/fuel economy etc than other older cars
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Old Feb 4, 2020 | 10:22 AM
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Originally Posted by Vampire1984PL
Its normal noise for such engines, more complicated than others more parts to get it better/fuel economy etc than other older cars

yes, you are right, normal, feels like those kind of sound gets less and less noticeable when drive for more km....
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Old Feb 4, 2020 | 12:41 PM
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MB W177 A250 4Matic
Didnt heard bmw engines on 1series 4 cyl but on VAG its heard too ( FSI, TFSI, TSI )
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Old Feb 4, 2020 | 12:49 PM
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Originally Posted by Vampire1984PL
Didnt heard bmw engines on 1series 4 cyl but on VAG its heard too ( FSI, TFSI, TSI )

yes, correct! my another vw has this, but you have to listen very very close
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Old Feb 4, 2020 | 03:45 PM
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MB W177 A250 4Matic
What engine Your vw got?
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Old Feb 4, 2020 | 03:46 PM
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Originally Posted by Vampire1984PL
What engine Your vw got?
current vw has 2.5L engine, and i had 1.8T, and 2.0T before
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Old Feb 4, 2020 | 03:56 PM
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MB W177 A250 4Matic
2.5L is not TSI engine, 1.8 ( 150-180HP ) and 2.0 (200-211HP ) I think those are little older engines so this sound could be hear little noiser
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Old Feb 4, 2020 | 04:12 PM
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Originally Posted by Vampire1984PL
2.5L is not TSI engine, 1.8 ( 150-180HP ) and 2.0 (200-211HP ) I think those are little older engines so this sound could be hear little noiser
my 2.5L engine is just OK, better than those TSI, but i saw a little oil leak from gasket, ( i was pushing very hard last summer and didn't change oil for 10k, ) may bad.... those TSI engine has more problem,,,,, even the new one, so my next car will be toyota.

the A class i have ( wife's car ), i need to taking more care on it.
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Old Feb 6, 2020 | 06:48 AM
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MB W177 A250 4Matic
Toyotas engines are not complicated, not many electronics, that they do not have issues with turbos and other stuff.
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Old Feb 6, 2020 | 10:40 AM
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Originally Posted by Vampire1984PL
Toyotas engines are not complicated, not many electronics, that they do not have issues with turbos and other stuff.
correct....
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Old Feb 7, 2020 | 03:53 PM
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Originally Posted by vfxcxn0309
i got my car checked at dealer, they said, it's high pressure fuel pump making that noise.....
My previous car, 2013 C250, had a high pressure fuel pump malfunction and the dealership charged me $1500 for parts and labor.
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Old Feb 7, 2020 | 04:01 PM
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Originally Posted by dwhite
My previous car, 2013 C250, had a high pressure fuel pump malfunction and the dealership charged me $1500 for parts and labor.
dealer told me that noise is normal. i got paper work from dealer, if later on, that high pressure fuel pump malfunction, they will replace for me, i still have 4 years warranty so far.
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Old Feb 7, 2020 | 06:34 PM
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Originally Posted by vfxcxn0309
dealer told me that noise is normal. i got paper work from dealer, if later on, that high pressure fuel pump malfunction, they will replace for me, i still have 4 years warranty so far.
From what I heard, it is bad to let your gas go too low often. This could lead to the fuel pump malfunction.
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Old Feb 7, 2020 | 08:01 PM
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Originally Posted by dwhite
From what I heard, it is bad to let your gas go too low often. This could lead to the fuel pump malfunction.
thank you very much , I will keep my gas in tank always above 50%
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Old Feb 8, 2020 | 01:18 PM
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Yeap thats true
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Old Mar 2, 2020 | 06:14 PM
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May want to check the camshaft advancers for anyone referencing this thread. They cause what you have described and can be heard making a loud noise when slowing turning the engine over by hand. It sounds like there is a return spring that fails
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Old Mar 3, 2020 | 10:01 AM
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Originally Posted by bicylindrico
May want to check the camshaft advancers for anyone referencing this thread. They cause what you have described and can be heard making a loud noise when slowing turning the engine over by hand. It sounds like there is a return spring that fails
if it's camshaft, it will give a check engine light, in this case, i think the high pressure fuel injector is the one give that sound. so far car drives normal
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Old Mar 21, 2021 | 09:32 PM
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heard from mb tech support its the cam chain tensioner, part to fix it being redesigned
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Old Mar 6, 2022 | 05:22 PM
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Any updates on the tensioner fix ?
Hi ( lululu ), do you have any updates on the cam chain tensioner fix please? Any technical bulletin reference or part description perhaps? I'm trying to sort this problem with my Mercedes dealership and any help is appreciated. Thanks for the help 👍
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