Loud clicking under acceleration

[Bazzie]

Rattling is different from clicking. Rattling under full throttle is more indicative of preignition (knock). If you are getting knock while running a tune I would suggest getting that sorted ASAP, and I would NOT run that tune until you do. Knock is your engine talking to you—listen!

Rattling / ticking / clicking; sound it is hard to describe.
Frequency is about 10/sec.
The AP-Monitor does not show any knock.
A 30km drive under different circumstances show only 1 of 2 knock-counts.

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[TorqueMan]

Rattling / ticking / clicking; sound it is hard to describe.

In my experience, the "rattle" sound typically associated with engine knock is lower in pitch than what I would call a tick or click. Imagine shaking a small, wooden box with a ball bearing inside it; that's the rattle sound I associate with engine knock. Now imagine shaking an empty soda can with a coin in it; that's more of a clicking or ticking sound to me.

In addition, the sound from engine knock usually has a sustain, which is why it's sometimes described as a ping. A click or tick is a single sharp sound, with no sustain. When you hit a tuning fork it produces sound until the tines stop vibrating, that is the sound is "sustained" until the vibration stops. If you tap a coin edge on a concrete surface there is no sustain, just a click. The sustain from the sound made by engine knock is far shorter than that of a tuning fork, but it isn't dead like the clicking of a coin on concrete.

 

[Bazzie]

Hi TorqueMan,
As you describe, it is definitely a clicking sound with the frequency of a machine gun.
If I didn’t know better, I would say it is the wastegate accurator or intake-flaps working far beyond their limits.

 

[TorqueMan]

Hi TorqueMan,
As you describe, it is definitely a clicking sound with the frequency of a machine gun.
If I didn’t know better, I would say it is the wastegate accurator or intake-flaps working far beyond their limits.

Have you ruled out the vacuum pump mounted on the intake camshaft? The video at this link recreates the sound:

https://www.mustang6g.com/forums/showpost.php?p=2007516&postcount=32

 

[3ZERO3]

After trying to resolve the issue several times, I finally threw in the towel and bought a GT. I enjoyed my ecoboost Mustang but don't think I'll go down that road again sadly.

 

[TorqueMan]

After trying to resolve the issue several times, I finally threw in the towel and bought a GT.

Seems drastic. "Unresolved" mechanical issues are usually indicative of a lazy or uninformed service department rather than a problem with the vehicle.

I suspect you secretely wanted a GT all along and found a good reason to get one. Not that there's anything wrong with that. :cheers:

 

[Bazzie]

After trying to resolve the issue several times, I finally threw in the towel and bought a GT. I enjoyed my ecoboost Mustang but don't think I'll go down that road again sadly.

I would do the same (unfortunately CO2-taxes are extreme here in Belgium).
The car has only 35k kms now
- new head gasket at 21k km
- clacking brakepads front and rear at 21km; not fixed (no warranty)
- rearcam issues at 24k km
- new ac-condensor at 26k km
- oil leak at vaccumpump at 29k km
- rattle started at 30k km
- again failure of ac at 33k km (could be the pump of vaporiser, due to stock issues still not fixed).

No blame to my dealer but the quality of the (whole) car is crappy.

Glad I took the 5 years of warranty but as soon as warranty is over, the car will be sold.

 

[3ZERO3]

Seems drastic. "Unresolved" mechanical issues are usually indicative of a lazy or uninformed service department rather than a problem with the vehicle.

I suspect you secretely wanted a GT all along and found a good reason to get one. Not that there's anything wrong with that. :cheers:

It was no secret at all. I wanted the GT from the start and after trying the resolve the issues with the ecoboost I "justified" to myself that I "needed" the GT

 

[TorqueMan]

It was no secret at all. I wanted the GT from the start and after trying the resolve the issues with the ecoboost I "justified" to myself that I "needed" the GT

Excellent mental gymnastics, although speaking from experience I know it would never fly with the House Appropriations Committee Chairperson where I live. She demands we stick to some fool notion she refers to as "logic." Infernal woman has no appreciation for unreasoning lust.Then again, given how fast we were married after our first date, perhaps she understands it only too well. Damn it...

 

[K-Roll302]

Not to dig up an old thread without purpose. But these noises are exactly the sounds that I think are coming from my vacuum pump or something along those lines. It's a rapid clicking sound related to engine revs, I can make it happen with light revs in neutral, and when driving it's incredibly audible in the cabin when the car is cold, and slowly quiets down to an inaudible level once the engine is at running temps?


Is there actually a fix for this because it's annoying as heck, and louder than the direct fuel injection for the majority of my commutes and drives. Be it, tightening the pump, replacing the pump?

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