engine knock - Mercedes Benz SLK Forum

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#1 Old 06-10-2012
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engine knock

hi all, im currently driving a 2008 slk 280.
i have a problem, the car in the morning starts fine and runs smoothly,
after giving it a good run, switching off and returning a few hours later on start up i can hear a knocking that lasts for a few seconds.
its seams to be quite a heavy knock from the bottom of the engine and goes as soon as the oil gets around.
car has only covered 22k and had three main dealer services in that time!
can anyone throw some light on the issue as its spoiling the ownership experience,
regards,
nigel.
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#2 Old 06-10-2012
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#3 Old 06-10-2012
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#4 Old 06-10-2012
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A couple(or more) questions;

1. Has anyone stood outside the car(with the bonnet up) to listen for this "heavy knock", just to get a better idea of its location?
2. Have you checked the oil level, and how often?

"Think as I think," said a man,"Or you are abominably wicked; You are a toad."
And after I had thought about it, I said,
"I will, then, be a toad."(Thank you, Steven Crane)

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A friend of mine recommend me to use this product, the oil additive.
After added one bottle into my car the engine runs smoother,
I can literally feel the difference(most important point),
also the ticking sound/hesitation all resolved.

Give it a try, every 3000 miles after oil change you add it will optimize the result, but I add it before oil change anyway still feel the improvement.

Techron Concentrate Plus Fuel System Cleaner
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