answersLogoWhite

0


Best Answer

There could be several things causing a knock in the top of your engine, most likely is that you are not using premium fuel.

Depends on the engine if its diesel the answer should be right, if its petrol it could as well be a whole bunch of other stuff.

User Avatar

Wiki User

12y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What would cause a knocking sound in the top of the engine when the car is in gear on an older Mercedes Benz?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is the meaning of the name 'Mercedes'?

You must be older than 18......that what Mercedes mean.


What is the meaning of name Mercedes mean?

You must be older than 18......that what Mercedes mean.


Will the alarm on my Mercedes cause my car not to start?

Probley not depending on the age of the car. If its a slightly older model then it wont because the older range of Mercedes runs off the flintstones concept but there are little people (midgets) under the car carrying it so just toss a firework under there and they will either run like hell or die.


What would cause the engine to cut out when it is hot?

The year, make, model and engine size would help us help you. In older vehicles (pre-fuel injection) vapor lock was an issue.


What kind of gas is best for Volkswagens?

Newer VW's (last 20 years), it doesn't really matter. Cheaper, low octane gas can cause knocking (early detonation), but the knock sensor will retard the car's ignition timing preventing knocking, but this will cause slightly poorer gas mileage. Thing is, the extra cost of the poor gas mileage isn't more expensive than the cost of higher octane gas, so it's pretty much a wash. Older VW's without knock sensors can have poorer gas mileage with cheap gasoline. This knocking will happen under hard acceleration. The knocking will be worse with higher compression (over 1: 8.5) engines like in the GTi, Cabriolet and Scirocco.


What would cause the engine to misfire in a 2000 villager?

Bad plugs Wires, Distributor cap, Points if older model This is just a few things


Why does the engine of my 1985 Mercedes 300 SD keep running after the key is turned off?

the car needs air to power the locks and turning off the carso this means that you have a leak in your system that's normal for the older cars


Lumpy acceleration on diesel Mercedes engine?

Lumpy acceleration is often the case with diesel engines. If you own a newer Mercedes, you could check with different Mercedes tuning companies. What you need is a chip or powerbox, which will electronically adjust your engine in such a way that your engines power and torque goes up (through optimized engine computer), and your miles a gallon might also go up. I estimate that a power increase of about 10 to 30 horsepowers is possible. You can check out different Mercedes tuners, for example Brabus or Lorinser. If you own an older model, you can still search for a chip on the internet. If you can't find anything, an individual chip tuning might be possible through analysing your engine by a tuner. However, I'm not sure if the second suggestion is a realistic one.


What will happen to your 300zx if the timing belt breaks?

On older 300ZX's equipped with a timing belt it will cause internal engine damage if the belt breaks as they are interference engines.


What cause cheetahs?

Older cheetahs.


Why did victorious end?

cause they were getting older


Will the Dodge 4.7 engine fit the older models?

The 4.7L does not directly interchange with any older engines.