D/\rK•650
Well-Known Member
- Joined
- Aug 8, 2025
- Threads
- 19
- Messages
- 805
- Reaction score
- 554
- Location
- California
- Vehicle(s)
- 2025 Mustang DarkHorse
Goodluck
with it and let us know what they say.
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Yeah that is my only worry, I can live with the noise if that’s all it is. it makes me concerned that it is a relatively new sound that only appears on random cold starts. I just got a mechanic stethoscope, so I am going to see if I have any luck narrowing it down myself.mine not the BBQ tick, that actually began only recently. Ive had several cars with noisy injectors so of no concern to me. the source being the phasers and/or HP fuel pump are typically the replies to you will receive either on the forum or asking any tech with Coyote experience. 'They all do it' is usually part of the reply. my only real concern is that if the cause is metal on metal friction causing the harmonic. No one's ever explained that fluids (oil or fuel) are the cause. The PCV theory is more recent to me. I will look into it further. I have another year of warranty and will probably visit my independent mechanic and round back wit the dealer before its up
No no no. You are describing the 2k rattle. The OP is talking about something totally different. The PCVs rattle on these cars briefly on cold start-up and certian ambient temps. It doesnt last long, usually goes away when the idle kicks down.yes it was also explained to me as the high pressure fuel pump or cam phasers, both on the same side. the service tech popped the hood on a new GT on the dealers lot and it made the same sound, around 2000 rpm. so at 10k mi on my 24 GT it has not gotten better or worse ( it goes away after 1/2- 1 hr of driving or some hard pulls. . just a personal preference if I could quiet it I would. rather hear the exhaust than the sound of it ready to throw a rod
Ok I got to talk some sense into you.Are the taps yours makes identical to mine? Mine started doing it around 4800 miles. If so, did the tech ever tell you why it happens inconsistently? My biggest concern is it coming and going, where as the bbq tick, it does it all the time.
I agree with you. I think I am just a little nervous because I’ve had two prior coyotes that never made this kind of tapping noise so I think I’m just looking to put my mind at ease a little bit. Appreciate everyone helping. Love this communityOk I got to talk some sense into you.
You've had at least 6 people tell you its normal now, but you are ignoring them and going down the rabbit hole with someone talking about a different symptom.
As people have mentioned, these cars have a common rattle on cold start ups, and its sevarity depends on ambient temps. It goes away fairly quickly, usually after the idle kicks down or after a couple mins when the engine warms. It is most certainly the PCV and completely
I have listened to your videos and read your discriptions. Mine does the exact same thing as do others. There's have been multiple threads on this. Stop obsessing and go drive your car man.
Just used the stethoscope on the car. The tapping was there on the cold start, but it wasn’t as pronounced. I held the stethoscope in all the places I think would be hotspots. The only one that returned serious vibration was the PCV valve. I will continue doing tests though, but not worried.yes keep us posted on what you hear with the scope
Personally, I am more worried about sounds I don't recognize after the engine is warmed up. GlennSounds like a normal engine? Nothing stands out to me. It does sound like the car is in an enclosed area; this can affect the direction and intensity of what's being heard. Changing locations might clarify the noise of interest.
You may notice the following, now or over time:
- Fuel pump. When the car is off and resting or especially when opening the Driver's door, you might hear some electrical or mechanical pulsing sounds; that's the fuel system priming
- Injector noises. With the hood up and the engine idling, you'll hear these clicking noises on the top side. Almost like a mechanical sewing machine. Or several
- PCV valve. Engine running, facing the vehicle, left side (US), place your ear near the PCV valve. It will sound like an electrical circuit arching or buzzing
- BBQ tick. Engine running, idle, down near the ground and behind either front wheel, you might hear a tick that sounds like a grill igniter. It's a random, lite click
- 2K Rattle. Between 1700 - 2100 RPM, especially cold, you might notice a distinct rattle from the engine while driving. Some think it is piston slap. Most think it is the Direct Injection fuel pump (top side of the engine, back, on top of one of the valve covers
- Exhaust pulses. In car, at idle, in the area of the transmission tunnel, you could hear some thumping sounds at low frequency. My belief is those are exhaust pulses collecting near the back of the engine, entering the pipes
That's quite a bit. All are characteristic sounds of these cars.
Edit,
For any sounds being heard, I'd be concerned if something increased in intensity or changed in characteristic over time. Something becoming more loud. A noise in the same area that doesn't sound like it did before.
I'm not incredibly concerned of things I hear when an engine is cold. My other vehicle clatters like crazy before full-warmed up. But it's been acting that way since the day I bought it new.
Each experience can be different. It's worthwhile to notice, pay attention to and discuss. Modern vehicles, they can be noisy. Fortunately for us, virtually everything we hear are simply characteristics of those power plants.