Gen 3 coyote passenger engine side rattling noise

[Jugrajb1]

Hey I have a 2020 mustang gt and have around 10k Km on it in Canada and I started my car on a cold start and heard this weird noise coming from the passenger front side of my engine. It seemed to sound like a metallic rattling noise and honestly have no clue what it is but it’s the first I’m hearing it? I’m confusing with the engine only having 10k Km on it how could this randomly start rattling while in winter storage. I also checked the oil it looked normal and oil pressure was normal I’m confused what this could be? Could someone experienced help me out

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[PartyPatJDM]

I see you have a JLT Catch can. The hoses I find are usually subpar and the connections can tend to be loose. That would make a vacuum leak and possible make a noise like this. Outside of that my initial instinct is temperature. Metal Contracts in cold and expands in heat so it possible a clamp is a bit loose due to the cold but expands and stops rattling after heating up. Hope this helps!

 

[Jugrajb1]

That could be right the car is in Calgary where the temperature reaches negative but would a vacuum leak cause this type of rattle? I was praying it’s not the ionic coyote tick that happens. This is a more of a metallic rattling noise coming near the gas cap/the catch can area

 

[Marman]

My car has the same noise did you figure it out?

 

[Marman]

Here's mine and my noise.

 

[ronnyek42]

Cam phasers are very near there .. also the high pressure fuel pump is like 4" behind that on the passenger side cam cover

 

[Marman]

Cam phasers are very near there .. also the high pressure fuel pump is like 4" behind that on the passenger side cam cover

I don't think keyword think it's cam phaser just cause it's behind it and usually cam phaser is a throaty rattle if that make sense. I'll swap back old hpfp this weekend and see if it goes away.

 

[Coyotebawl]

Any updates on the above ?

 

[Marman]

Any updates on the above ?

Noise has died down a bit, I think part of my issue is when I put in new hpfp I didn't oil it properly causing more noise to sleep through valve cover. Noise has died down as well ever since I put in old hpfp

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