Does anyone have this sound?
Thread Starter
Senior Member
Joined: Mar 2011
Posts: 312
Likes: 3
From: San Francisco
2000 mercedes benz s430
Does anyone have this sound?
Hi all I was wondering if other people have this problem. When I start the car after its been sitting all night for the first three minutes or so it makes a weird noise like ticking sound. After I start driving it the sound goes away or if it stands for 3-4min after its warmed up the sound goes away
Super Member
Joined: Aug 2005
Posts: 591
Likes: 9
From: Covington, WA
'96 SL600, '05 S55 AMG, '06 C230
Recognizing sounds can be tough to describe, is the sound more of a chirp than a tick? That's usually a belt. Does it have a metallic sound to it? Does it sound tinny, like sheet metal? Or solid, like a piece of metal?
Cheers,
Jeff
Cheers,
Jeff
Thread Starter
Senior Member
Joined: Mar 2011
Posts: 312
Likes: 3
From: San Francisco
2000 mercedes benz s430
Member
Joined: Jul 2011
Posts: 123
Likes: 11
From: Brooklyn, NY
2006 R500
the oil passages to the lifters are pretty tiny on these motors and a little bit of sludge buildup over time can make it that much harder for the oil to make it's way up there from a cold start. mine was tapping like crazy from a cold start when I got it. I did a motor flush, then ran some seafoam in the crankcase, then next oil change switched out to lucas and now it's quiet as a baby, even from a cold start. if your against a motor flush as many seem to be then I'd say at least try some seafoam in the crankcase
Super Member
Joined: Aug 2005
Posts: 591
Likes: 9
From: Covington, WA
'96 SL600, '05 S55 AMG, '06 C230
Cheers,
Jeff
Super Member
Joined: Aug 2005
Posts: 591
Likes: 9
From: Covington, WA
'96 SL600, '05 S55 AMG, '06 C230
Worn belts can make funny noises. So if it's anything like a chirp, review the belt. If the ticking seems to follow the RPM exactly (one tick per 2 revs) then it's probably the valve train. The posts above cover that aspect and are good.
Cheers,
Jeff
Cheers,
Jeff
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Member
Joined: Sep 2011
Posts: 213
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From: Indiana
2002 S430
In the summer my 2002 S430 was sitting 5 weeks. At the re-start it did a lot worse than ticking, it was a strong knocking noise from the engine for about 10 - 15 seconds. I drove immediately to my private MB specialized workshop for an oil change (I did not have at home even quart of oil).
No noise since but it was not tested for such a long no-drive period, 4 days was the longest.
It is not a good idea to starve the engine of oil at every cold start, evetually you may destroy the bearings, it is a major and expensive repair unless you can DIY. I had to have it on my Saab many years back, I do not want even think about the same job on my MB.
You should try to figure out where exactly the noise is coming from, ask someone to start the cold engine while you use a stethoscope onseveral parts of the engine, find the spot wher it is the worst. Do not let the case rest until you find cause and eliminate the cold start ticking. Let's hope that a proper oil change woul help.
I am planning to do Motor Flush with Service B coming soon myself, so please someone direct me to the manual of doing the flush and exactly how to use the seafoam.
No noise since but it was not tested for such a long no-drive period, 4 days was the longest.
It is not a good idea to starve the engine of oil at every cold start, evetually you may destroy the bearings, it is a major and expensive repair unless you can DIY. I had to have it on my Saab many years back, I do not want even think about the same job on my MB.
You should try to figure out where exactly the noise is coming from, ask someone to start the cold engine while you use a stethoscope onseveral parts of the engine, find the spot wher it is the worst. Do not let the case rest until you find cause and eliminate the cold start ticking. Let's hope that a proper oil change woul help.
I am planning to do Motor Flush with Service B coming soon myself, so please someone direct me to the manual of doing the flush and exactly how to use the seafoam.
Thread Starter
Senior Member
Joined: Mar 2011
Posts: 312
Likes: 3
From: San Francisco
2000 mercedes benz s430
My oil level is fine in fact I just changed the oil a week ago this has been going on for few months. I always warm up the car for about five min before I start driving. Should I not warm it up I know BMW's are not suppose to be warmed up is it the same with these cars?
In the summer my 2002 S430 was sitting 5 weeks. At the re-start it did a lot worse than ticking, it was a strong knocking noise from the engine for about 10 - 15 seconds. I drove immediately to my private MB specialized workshop for an oil change (I did not have at home even quart of oil).
No noise since but it was not tested for such a long no-drive period, 4 days was the longest.
It is not a good idea to starve the engine of oil at every cold start, evetually you may destroy the bearings, it is a major and expensive repair unless you can DIY. I had to have it on my Saab many years back, I do not want even think about the same job on my MB.
You should try to figure out where exactly the noise is coming from, ask someone to start the cold engine while you use a stethoscope onseveral parts of the engine, find the spot wher it is the worst. Do not let the case rest until you find cause and eliminate the cold start ticking. Let's hope that a proper oil change woul help.
I am planning to do Motor Flush with Service B coming soon myself, so please someone direct me to the manual of doing the flush and exactly how to use the seafoam.
No noise since but it was not tested for such a long no-drive period, 4 days was the longest.
It is not a good idea to starve the engine of oil at every cold start, evetually you may destroy the bearings, it is a major and expensive repair unless you can DIY. I had to have it on my Saab many years back, I do not want even think about the same job on my MB.
You should try to figure out where exactly the noise is coming from, ask someone to start the cold engine while you use a stethoscope onseveral parts of the engine, find the spot wher it is the worst. Do not let the case rest until you find cause and eliminate the cold start ticking. Let's hope that a proper oil change woul help.
I am planning to do Motor Flush with Service B coming soon myself, so please someone direct me to the manual of doing the flush and exactly how to use the seafoam.
Junior Member
Joined: Mar 2009
Posts: 59
Likes: 0
W220
Is it a ticking or a knocking sound?
A slight ticking sound may be the fuel vacuum pump that occasionally runs then shuts off when the car is started. I too, do not hear it if the engine is warm, but I think it only runs when the pressure in the fuel tank drops over night.
Open the hood, exactly left to the driver's side fuse box there is a little reservoir. The ticking sound comes from there when the car is started in the morning, check it out.
If its the cylinders, listen carefully whether or not you will be able to identify if the sound is louder from either side of the car. Listen by the wheel well both sides, and also with open hood from top. There is a special tool for this procedure as well.
A slight ticking sound may be the fuel vacuum pump that occasionally runs then shuts off when the car is started. I too, do not hear it if the engine is warm, but I think it only runs when the pressure in the fuel tank drops over night.
Open the hood, exactly left to the driver's side fuse box there is a little reservoir. The ticking sound comes from there when the car is started in the morning, check it out.
If its the cylinders, listen carefully whether or not you will be able to identify if the sound is louder from either side of the car. Listen by the wheel well both sides, and also with open hood from top. There is a special tool for this procedure as well.
