2007 E63 AMG Whistle noise
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2007 E63 AMG
2007 E63 AMG Whistle noise
Hi fellow AMG enthusiasts. I have a whistling sound that seems to be coming from the intake manifold of the M156 engine. I have read about possible PCV valve failure or IM gasket leak. The sound only appears after the engine warms up, usually when it is about 70 F and does not go away when I rev or drive it. Pretty much stays when the engine is warm. When the engine cools or when doing a cold start it disappears. No CEL and no engine drives normal. Thanks. AMG enthusiasts. I have a whistling sound that seems to be coming from the intake manifold of the M156 engine. I have read about possible PCV valve failure or IM gasket leak. The sound only appears after the engine warms up, usually when it is about 70 F and does not go away when I rev or drive it. Pretty much stays when the engine is warm. When the engine cools or when doing a cold start it disappears. No CEL and no engine drives normal. Thanks.
Super Member
Joined: Jul 2019
Posts: 763
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From: LA
1987 Porsche 911. 2008 G55
Hey bud, definitely sounds like it's coming from the passenger's side rear.... this is where the PCV Valve is hidden. There's also a T-Connector at the back of the manifold that connects two hard line vacuum hoses. Give that a check to.
The PCV is a pain in the *** to replace if you go the route of removing the intake manifold.
If you do remove the intake manifold I'd also suggest purchasing the following:
-Intake manifold gasket (I have a spare, I can send at the cost of shipping)
- Injector O-Rings tops and bottoms, since these have likely aged and it's a good time to do them
- Inspect and clean the injectors, even if just topical
- New PCV Valve
- New intake manifold bolts, since they are once use super light aluminum bolts that distort after you take them back out
Some other things to look at since you'll have access:
- Replace the 4 filters in the intake
- Replace Cabin filter
- Replace spark plugs
- Clean the base of the intake manifold (tons of dirt collects here)
- Clean the intake manifold plenums, these get full of carbon and oil esp when the PCV goes.
All in it's about a 2hr job, just need to be careful... I had to rebuild my intake manifold since the PCV screw broke off and some misc plastics went into the manifold. I got mine rebuilt by RMT and it cost me a pretty penny, but they rebuild with metal internals and provided all new sensors etc on the manifold.
Good luck and keep us updated.
- Ian
The PCV is a pain in the *** to replace if you go the route of removing the intake manifold.
If you do remove the intake manifold I'd also suggest purchasing the following:
-Intake manifold gasket (I have a spare, I can send at the cost of shipping)
- Injector O-Rings tops and bottoms, since these have likely aged and it's a good time to do them
- Inspect and clean the injectors, even if just topical
- New PCV Valve
- New intake manifold bolts, since they are once use super light aluminum bolts that distort after you take them back out
Some other things to look at since you'll have access:
- Replace the 4 filters in the intake
- Replace Cabin filter
- Replace spark plugs
- Clean the base of the intake manifold (tons of dirt collects here)
- Clean the intake manifold plenums, these get full of carbon and oil esp when the PCV goes.
All in it's about a 2hr job, just need to be careful... I had to rebuild my intake manifold since the PCV screw broke off and some misc plastics went into the manifold. I got mine rebuilt by RMT and it cost me a pretty penny, but they rebuild with metal internals and provided all new sensors etc on the manifold.
Good luck and keep us updated.
- Ian
