Noise from motor - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

86GT · 10-27-2013, 07:12 PM

I recently gave my BRZ (~1400 miles) to the dealership to get the fuel pump replaced (recall due to "chirp" noise). After I got back the car, I am noticing a weird noise from the motor that I am not sure was present before. Anyone else thinks the sound is not normal? Should I get it checked?

Attaching the sound clip (notice around the 6 second mark)

Tsungfai · 10-27-2013, 07:25 PM

My car makes the same exact noise at idle, I believe it's just the direct injectors working.

FR-S Matt · 10-27-2013, 07:27 PM

How many more hundred posts of this noise are we going to read that's normal with this engine? lol

86GT · 10-27-2013, 07:57 PM

Quote:

Originally Posted by Tsungfai

My car makes the same exact noise at idle, I believe it's just the direct injectors working.

Thanks for confirming. Though it sounds odd to me.

Quote:

Originally Posted by FR-S Matt

How many more hundred posts of this noise are we going to read that's normal with this engine? lol

Maybe I should have searched for a thread with a audio clip.

ecko04 · 10-27-2013, 09:43 PM

Definitely normal. This car has a lot of tech thrown into it despite the fact that it's supposed to deliver a pure driving experience. What you're hearing as others have said is the direct injection system when idling. Despite the noise, the DI system provides a smoother idle than relying on the port injectors alone.

There's nothing wrong with your question though. You heard something that you hadn't heard before so you posted it. Most likely, you were never listening for it before so that's why you never heard it. It's good you know what the sound is now. That's what these forums are for.

TopGearSolutions · 10-28-2013, 12:25 AM

Sounds normal.

SmsAlSuwaidi · 10-28-2013, 12:38 AM

If you ever hear this engine quite or sounding normal, then you should seriously look into it.

86GT · 10-28-2013, 09:29 PM

Thanks for the assuring responses guys.

So, the DI system isnt always on? Cause when I started the car, it wasn't running and then it turned on after some time.

ecko04 · 10-28-2013, 09:44 PM

Quote:

Originally Posted by 86GT

Thanks for the assuring responses guys.

So, the DI system isnt always on? Cause when I started the car, it wasn't running and then it turned on after some time.

When you first start the car (cold start) it's not running solely off the DI system. That's why when you first start it, you see that it idles higher. Once the DI takes over, you notice the RPM drop down and you will hear the DI system (i.e. your initial post) usual ticking. That's the best way I can explain it.

86GT · 10-28-2013, 11:12 PM

Quote:

Originally Posted by ecko04

When you first start the car (cold start) it's not running solely off the DI system. That's why when you first start it, you see that it idles higher. Once the DI takes over, you notice the RPM drop down and you will hear the DI system (i.e. your initial post) usual ticking. That's the best way I can explain it.

Actually when I was capturing the audio, the motor was warmed up. I had been for a spirited drive and got back. After I noticed the noise in my garage, I turned off the car and turned it back on after 2 mins. The noise wasn't present when the car started but came on after ~15 seconds.

BTW, I am not worried now that I hear that the noise is expected. I am just trying to understand the reason behind without getting too deep into it.

utekineir · 10-28-2013, 11:19 PM

Quote:

Originally Posted by FR-S Matt

How many more hundred posts of this noise are we going to read that's normal with this engine? lol

Same exact thing on every forum with di cars.

ecko04 · 10-28-2013, 11:25 PM

Quote:

Originally Posted by 86GT

Actually when I was capturing the audio, the motor was warmed up. I had been for a spirited drive and got back. After I noticed the noise in my garage, I turned off the car and turned it back on after 2 mins. The noise wasn't present when the car started but came on after ~15 seconds.

BTW, I am not worried now that I hear that the noise is expected. I am just trying to understand the reason behind without getting too deep into it.

Exactly, you turned the car off and started it again. The process starts over.

10-27-2013, 09:43 PM	#5
ecko04 Seems Legit Join Date: Mar 2013 Drives: Toyota Location: Here & There Posts: 855 Thanks: 187 Thanked 438 Times in 250 Posts Mentioned: 24 Post(s) Tagged: 0 Thread(s)	Definitely normal. This car has a lot of tech thrown into it despite the fact that it's supposed to deliver a pure driving experience. What you're hearing as others have said is the direct injection system when idling. Despite the noise, the DI system provides a smoother idle than relying on the port injectors alone. There's nothing wrong with your question though. You heard something that you hadn't heard before so you posted it. Most likely, you were never listening for it before so that's why you never heard it. It's good you know what the sound is now. That's what these forums are for. __________________ No build thread. I don't want to be reminded of how much money I spent. [insert profound quote here]

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