Trevorseaf Posted November 16, 2023 Share Posted November 16, 2023 Greetings, individuals. In recent weeks, I have observed a little rattling sound during the first start-up of my vehicle while the engine is cold. This auditory disturbance, although not very pronounced, persists for a brief duration of several seconds before subsiding. The occurrence is not constant but rather sporadic.When the machine is in operation, it emits little noise. However, do you have any hypotheses on the potential causes of this phenomenon? Greetings Quote Link to comment Share on other sites More sharing options...
DSM10000 Posted November 16, 2023 Share Posted November 16, 2023 Would the inclusion of the vehicle model and engine type be beneficial in providing us with relevant information? Quote Link to comment Share on other sites More sharing options...
keithmerc220 Posted November 16, 2023 Share Posted November 16, 2023 What is the current mileage of your vehicle? If the vehicle in question is equipped with the E diesel engine variant mentioned in your signature, it is possible to visually inspect the timing chain by examining the oil cap. This inspection allows for an assessment of the extent to which the tensioner is extended. Quote Link to comment Share on other sites More sharing options...
Trevorseaf Posted November 16, 2023 Author Share Posted November 16, 2023 I apologise for the error in my previous statement. The vehicle in question is a 2011 model of the E350 V6 diesel. Quote Link to comment Share on other sites More sharing options...
Trevorseaf Posted November 16, 2023 Author Share Posted November 16, 2023 since previously said, the observed phenomenon does not constitute a significant disturbance, since it is of short duration, lasting just a few seconds before dissipating.Intermittently, the occurrence is seen just during cold starts.After being driven, she becomes silent and refrains from engaging in the same behaviour for the remainder of the day. Quote Link to comment Share on other sites More sharing options...
Trevorseaf Posted November 16, 2023 Author Share Posted November 16, 2023 According to my research, it has been shown that occurrences of the mentioned phenomenon are more likely to transpire in colder climates, mostly because to reduced oil pressure. Quote Link to comment Share on other sites More sharing options...
Trevorseaf Posted November 16, 2023 Author Share Posted November 16, 2023 I am in satisfactory condition with a total of 109,000 units. Quote Link to comment Share on other sites More sharing options...
Rojoires Posted November 16, 2023 Share Posted November 16, 2023 Perhaps it would be beneficial to provide a hyperlink to a video within this platform, so enabling others to provide guidance and recommendations on the issue of noise. Are you familiar with the car's service history? If there is any uncertainty, it is advisable to start the maintenance process by doing an oil and filter replacement, using oil that adheres to the appropriate specifications and a filter of satisfactory quality. This approach is recommended due to its cost-effectiveness, simplicity, and absence of adverse effects. If the aforementioned troubleshooting steps do not resolve the issue, it would be advisable to seek the professional opinion of a specialist on the potential chain-related problem. However, it is worth noting that it would be unexpected for a vehicle with a mileage of 109,000 miles, namely the om642 model, to encounter such an issue. Quote Link to comment Share on other sites More sharing options...
Trevorseaf Posted November 16, 2023 Author Share Posted November 16, 2023 I will comply with your request. Thank you for your input. As previously said, the issue only arises during first activation in low temperature conditions, but inconsistently.Initially, I contemplated if the observed issue may perhaps be attributed to a decrease in oil pressure, possibly influenced by the somewhat lower temperatures seen during the mornings. I will proceed by doing an oil and filter change as a starting point. The vehicle underwent replacement of its oil cooler gaskets due to leakage issues. Given that the previous gaskets were of an outdated kind, I am curious as to whether the appropriate oil was used during the replacement procedure.According to my understanding, the garage also performed an oil and filter change. Quote Link to comment Share on other sites More sharing options...
keithmerc220 Posted November 16, 2023 Share Posted November 16, 2023 During the process of doing an oil change on the om642, it is recommended to distribute an equal amount of the new oil between the oil filter housing and the conventional oil filler cap. Quote Link to comment Share on other sites More sharing options...
Trevorseaf Posted November 16, 2023 Author Share Posted November 16, 2023 What is the reason for this phenomenon? Quote Link to comment Share on other sites More sharing options...
keithmerc220 Posted November 16, 2023 Share Posted November 16, 2023 The aforementioned explanation was relayed to me some years ago by a specialist in the field of internal combustion engines. According to this expert, the reason for this phenomenon is likely attributed to a temporary lack of oil supply to the opposite side of the engine (specifically, the side housing the oil filter) at first startup, prior to the oil pump achieving optimal oil distribution throughout the engine. Quote Link to comment Share on other sites More sharing options...
Trevorseaf Posted November 16, 2023 Author Share Posted November 16, 2023 Is it acceptable to proceed in this manner? Similar to my previous experiences with other vehicles I have had, I have consistently placed it in the oil filler cap. Could you please provide information on the appropriate specification of oil for these engines?Additionally, does it have a fill capacity of 8 litres? Quote Link to comment Share on other sites More sharing options...
DSM10000 Posted November 16, 2023 Share Posted November 16, 2023 Please do a search on the eBay platform for Mercedes vehicles available in the Newcastle area. Service kits, consisting of 10 litres of the appropriate oil and a Mercedes oil filter, are available for purchase at a competitive price. The engine requires around 8 to 8.5 litres of oil while undergoing a filter replacement. Quote Link to comment Share on other sites More sharing options...
Trevorseaf Posted November 16, 2023 Author Share Posted November 16, 2023 Thank you so much for your assistance. Quote Link to comment Share on other sites More sharing options...
Mistral Posted November 16, 2023 Share Posted November 16, 2023 The task at hand involves the use of an M104. I switched to Petronas oil, which resolved the issue I was experiencing with an unbranded oil of the proper specifications. Quote Link to comment Share on other sites More sharing options...
keithmerc220 Posted November 16, 2023 Share Posted November 16, 2023 The 229.51 oil, which refers to a specific kind of oil, is really of high quality. Additionally, the MB kits, which are associated with this oil, are known for their reliability and effectiveness. The volume is about 8 litres, which need regular verification on each occasion. Typically, I engage in the purchase of 20-liter barrels during promotional periods. Quote Link to comment Share on other sites More sharing options...
Trevorseaf Posted November 16, 2023 Author Share Posted November 16, 2023 Is that so? As previously mentioned, the occurrence of the issue is not constant, specifically limited to cold starts. However, there are instances when the vehicle starts without any complications. Quote Link to comment Share on other sites More sharing options...
Trevorseaf Posted November 16, 2023 Author Share Posted November 16, 2023 Thank you for your input. I will definitely do more research on this matter. Quote Link to comment Share on other sites More sharing options...
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