1992 W124 300TD - Noisy Tappets

tomghannon

Member
Joined
Oct 10, 2010
Messages
41
Location
Co. Clare, Ireland
Car
1992 W124 300TD, 2001 W210 E320CDI
Hi all,

Long time lurker here - first time poster!

As the title says, I have a 1992 W124 300TD with 231,000 miles.

Mechanically, the car has been faultless - however it has a persistent problem with what I assume are noisy tappets. I change the oil and filter every 3000 miles and in the last two changes I ran an engine flush which doesn't seem to have cured the problem. I use 5w30 semi-synthetic oil as advised by a number of mechanic friends.

My questions, is there anything else I can do along with or instead of the engine flush and also would I be better off using fully synthetic oil.

Thanks
 

krimat2005

Active Member
Joined
May 31, 2009
Messages
318
Location
Littlehampton, West Sussex
Car
Mercedes W124 300D/ S203 220cdi
Hi, change the tappets, they cost about £10-12 each from gsf, well i'm suggesting get them all 12 done. if you have a friendly mechanic who knows what he's doing it's 2 hrs job with a pint of lager...
 

230K

MB Enthusiast
Joined
Jun 1, 2003
Messages
2,189
Location
Belfast
Car
09 E320 cdi Sport Estate, 98 E300TD Estate, 99 SL 500
Hi

I agree, just change them, i tried changing just 2 to start with and then bit the bullet and bought the remaining 10 and she has been as silent as a mouse chewing paper since and that was 7 years ago!!

Easy to change too

230K
 

spock500

Active Member
Joined
Apr 1, 2008
Messages
727
Location
Milton Keynes
Car
S124
Hi all,

Long time lurker here - first time poster!

As the title says, I have a 1992 W124 300TD with 231,000 miles.

Mechanically, the car has been faultless - however it has a persistent problem with what I assume are noisy tappets. I change the oil and filter every 3000 miles and in the last two changes I ran an engine flush which doesn't seem to have cured the problem. I use 5w30 semi-synthetic oil as advised by a number of mechanic friends.

My questions, is there anything else I can do along with or instead of the engine flush and also would I be better off using fully synthetic oil.

Thanks
Given the miles I might be tempted to try 10/40w to see if that makes a difference.

What spec oil do MB recommend for this engine?

If you do change them give these guys a try, paid about £8ish each for mine :thumb:

UltraParts
 

sub_zero

Active Member
Joined
Oct 18, 2004
Messages
257
Location
kuwait
Car
W124 E220 1995
Pardon me all, what do you mean by tappets?
I tried Google to translate it, Google translated it to another word I don't know :confused:
 
OP
OP
T

tomghannon

Member
Joined
Oct 10, 2010
Messages
41
Location
Co. Clare, Ireland
Car
1992 W124 300TD, 2001 W210 E320CDI
Thanks for all the replies so far.

Just been quoted €32.75 ea + VAT = €39.62 (x12) = €475.44 from my local friendly main stealer.

I assume (hope) I can get these cheaper elsewhere.

Does know the Mercedes part no and any suggestions on who to try to obtain these.

Thanks.
 

spock500

Active Member
Joined
Apr 1, 2008
Messages
727
Location
Milton Keynes
Car
S124
Thanks for all the replies so far.

Just been quoted €32.75 ea + VAT = €39.62 (x12) = €475.44 from my local friendly main stealer.

I assume (hope) I can get these cheaper elsewhere.

Does know the Mercedes part no and any suggestions on who to try to obtain these.

Thanks.
Did you try the link in my post?
 

snoopy

Active Member
Joined
Oct 8, 2010
Messages
104
Also very possibly injector knock, they'll be worn at that mileage.

Loosen each one of (13mm spanner) one by one and see if knock stops, if so you've found it.

Do you run on comedy fuel?

I have a working spare for sale if you need it, I bought 6 from a breakers and only needed 5 for my 250d. It's been tested. See: http://gb.adings.com/?classifieds;module=view;id=163
 
Last edited:

krimat2005

Active Member
Joined
May 31, 2009
Messages
318
Location
Littlehampton, West Sussex
Car
Mercedes W124 300D/ S203 220cdi
try GSF car parts, they are about £12, but if you ask nicely they might give you discount. anyway, staff they selling is OEM INA, so I wouldn't think twice.
 

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