M275 SOUND DRIVER

You cannot hear the noise in the cabin – only outside by the hood. I am thinking maybe my intercoller pump or hoses failed? If you even open that cap on the intercooler system, the system usually needs to be bled afterwards M v12 strange noise and smoke!! I am guessing that a few of the head cover hold down bolts under the coil pack may have been loose — they were very easy to remove.

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Photo prior to running with cover off – oil soind not in place. Looking in the oil cap on the valve cover and the oil filter chamber showed no sludge or deposits — just much darker oil than I would expect. After test drive no extra noise problem fixed but I did not find an identifiable cause.

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Allowed engine to warm fully – no extra noises detected problem disappeared All oiling systems appear to be flowing properly makes a mess Very short video of running with cover off. If it was just noise, then I would guess vacuum lines For the best viewing experience please update your browser to Google Chrome. It is a new noise — was not there earlier – so it is not normal. But noise plus smoke? Thanked 64 Times in 53 Posts.

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New Noise – V12 – Forums

You have already rated this thread Rating: Quote message in reply? Thanked 58 Times in 46 Posts. Your question will be posted in:. Best guess is noise is from front drivers side quadrant.

Always before the noise would start as soon as the engine started warming up – within 5 minutes at idle. Noise has not returned since repair. Add Thread to del. Question is what happened? Keep a close eye on it. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.

Thanks for the update.

I was gonna jump on Coolant too In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register. I found removing the intercooler totally was much easier than “folding it out of the way” as suggested by WIS.

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New Noise – V12

Spund driven it three times since then and no noiseno smoke. I have used the ear and screwdriver method to try and find the source to no avail.

Register Now In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register. Where is the intercoller pump located? Removed Head Cover valve cover.

It actually sounds like it is coming from the front end of the driver side coil pack area to be specific. Last edited by tusabes; at Could it be a vacuum line to the turbocharger diverter valve or pneumatic line to the waste-gate? Im thinking it’s something to do with the turboas Its still fast but I don’t have the same neck snapping acceleration as before. Facebook Google Remember Me?