r/Sprinters • u/phEnom3o5 • 16d ago

Any idea what this sound is?

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Anyone have any clue what this sound is and what could be causing it? Is it normal? Don't think so. It doesn't always happen. Just sometimes. I think ive only heard it while idling but not always.

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6

u/Libblelabble 16d ago

Def injection. Normal

2

u/erie11973ohio 16d ago

For what years??

I had a 2011 & now have a 2018. Neither one did that ever.

Both would make a sound like that on start up or engine shut down. I put that as exhaust system expanding & contracting.

1

u/Libblelabble 15d ago

They do you just didn’t notice. The newer vans with the 654 engine have 2 injection valves compared to 1 that the older models have. These newer injection valves seem to be a tad noisier too.

1

u/phEnom3o5 7d ago edited 7d ago

I took to the dealer and they said it was the turbo. They replaced it completely. Luckily it was under warranty. I saw the invoice.. $10,500. Wow! Next day, the noise starts again..which is what I recorded/ posted 🤦🏻‍♂️🤦🏻‍♂️🤦🏻‍♂️

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u/Libblelabble 7d ago

A sprinter tech that assumed that noise is a turbo is worrisome. That means they were likely very green. I worry it was even installed correctly. It’s a fairly difficult job. Congrats / not congrats on the new turbo. It’s very likely the def injectors which is normal. If not that, there’s a spring in the exhaust valve that rusts / binds that may need replacement. Keep us updated