Ticking noise when accelerating
Thread Starter
Member
Joined: Apr 2013
Posts: 98
Likes: 7
From: Culver City, CA
F10 M5 Comp, 2012 Ford Raptor
Ticking noise when accelerating
It was really nice in LA today, so I drove with the windows down to enjoy the soundtrack our cars make. I noticed when accelerating past 3k rpm, or during acceleration with a transmission kick-down, I'll hear two metallic 'tick' sounds coming from the engine. It feels like one from each side, right after the other, and then just normal engine acceleration noises.
I don't feel the timing is being pulled due to detonation, and the acceleration still feels linear. It's repeatable at each stop light or whenever the car's been stopped and that type of acceleration is needed.
I checked around the exhaust manifolds and didn't really see any signs of leaking, but I'll admit I don't really know what to look for. No check engine lights or any of that.
Any idea what it could be? Are there secondary intakes that open at certain rpms or throttle positions that could be producing this noise?
Thanks for any help!
I don't feel the timing is being pulled due to detonation, and the acceleration still feels linear. It's repeatable at each stop light or whenever the car's been stopped and that type of acceleration is needed.
I checked around the exhaust manifolds and didn't really see any signs of leaking, but I'll admit I don't really know what to look for. No check engine lights or any of that.
Any idea what it could be? Are there secondary intakes that open at certain rpms or throttle positions that could be producing this noise?
Thanks for any help!
Thread Starter
Member
Joined: Apr 2013
Posts: 98
Likes: 7
From: Culver City, CA
F10 M5 Comp, 2012 Ford Raptor
I appreciate the response! This could be something totally normal, like the engine pivoting under load, or it could be something not so normal. I'll get to the bottom of it one way or another. 
Super Member
Joined: Jan 2012
Posts: 660
Likes: 43
From: Sydney
2015 E400 Coupe
I have a 2012 C63 and it does not make any unusual noise when I accelerate. Mind you I often hear a very loud exhaust sound and some tyre noise followed by a traction control unit noise. Come to think of it, I hear that all the time!
Stay in good health.
Stay in good health.
Thread Starter
Member
Joined: Apr 2013
Posts: 98
Likes: 7
From: Culver City, CA
F10 M5 Comp, 2012 Ford Raptor
Hah, that's generally what I hear too. Maybe it's my car revolting against the crappy California summer blend fuel we've switched over to in the past month. 91 octane is the highest we get, and I'll bet that's really not 91. Time to find some stations that sell racing fuel!
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
Member
Joined: Apr 2013
Posts: 98
Likes: 7
From: Culver City, CA
F10 M5 Comp, 2012 Ford Raptor
Also, that Chevron has now been blacklisted forever!The 76 @Pico has 100 octane gas for $10/gallon, but I wonder how fast the ECU adapts to it? To get to 93 average in the tank, I think we'd need about 4 gallons of it mixed with 91. I'm willing to give it a shot to see if it solves the ticking noise.
MBWorld Fanatic!
Joined: Sep 2005
Posts: 3,165
Likes: 59
C63 AMG P30 *EuroCharged*| Porsche Cayenne | Buell XB9SX
A buddy filled his CTS-V up with me at the Chevron on Westwood and Santa Monica Blvd and is experiencing pinging as well. So here's a good use case for our cars burning through a tank of fuel as quickly as they do Also, that Chevron has now been blacklisted forever!
The 76 @Pico has 100 octane gas for $10/gallon, but I wonder how fast the ECU adapts to it? To get to 93 average in the tank, I think we'd need about 4 gallons of it mixed with 91. I'm willing to give it a shot to see if it solves the ticking noise.
Also, that Chevron has now been blacklisted forever!The 76 @Pico has 100 octane gas for $10/gallon, but I wonder how fast the ECU adapts to it? To get to 93 average in the tank, I think we'd need about 4 gallons of it mixed with 91. I'm willing to give it a shot to see if it solves the ticking noise.
Thread Starter
Member
Joined: Apr 2013
Posts: 98
Likes: 7
From: Culver City, CA
F10 M5 Comp, 2012 Ford Raptor
MBWorld Fanatic!
Joined: Sep 2005
Posts: 3,165
Likes: 59
C63 AMG P30 *EuroCharged*| Porsche Cayenne | Buell XB9SX
Junior Member
Joined: Mar 2013
Posts: 24
Likes: 3
From: Utah
11' c63 p31
It was really nice in LA today, so I drove with the windows down to enjoy the soundtrack our cars make. I noticed when accelerating past 3k rpm, or during acceleration with a transmission kick-down, I'll hear two metallic 'tick' sounds coming from the engine. It feels like one from each side, right after the other, and then just normal engine acceleration noises.
I don't feel the timing is being pulled due to detonation, and the acceleration still feels linear. It's repeatable at each stop light or whenever the car's been stopped and that type of acceleration is needed.
I checked around the exhaust manifolds and didn't really see any signs of leaking, but I'll admit I don't really know what to look for. No check engine lights or any of that.
Any idea what it could be? Are there secondary intakes that open at certain rpms or throttle positions that could be producing this noise?
Thanks for any help!
I don't feel the timing is being pulled due to detonation, and the acceleration still feels linear. It's repeatable at each stop light or whenever the car's been stopped and that type of acceleration is needed.
I checked around the exhaust manifolds and didn't really see any signs of leaking, but I'll admit I don't really know what to look for. No check engine lights or any of that.
Any idea what it could be? Are there secondary intakes that open at certain rpms or throttle positions that could be producing this noise?
Thanks for any help!
Thread Starter
Member
Joined: Apr 2013
Posts: 98
Likes: 7
From: Culver City, CA
F10 M5 Comp, 2012 Ford Raptor
^To me that sounds like the footwell trim / cabin filter area is rattling a little, or it's something in the cowl near the HVAC intake/blower is loose and permeating through into the cabin.
Junior Member
Joined: Mar 2013
Posts: 24
Likes: 3
From: Utah
11' c63 p31
it’s an external sound too if I drive in an alleyway you can hear the echo off the walls.Anyway, this I believe this to be motor related since it only happens when cold, and it follows the revs at 1500-2000rpm goes away once 100F oil temp or so,
and adding oil to dipstick max level drastically improves this, but sound is faint still.
I’m guessing just normal lifter wear noise but I was wondering if anyone has had this properly diagnosed, and/or if some guru can just warn me that my car is about to blow up. Haha
