2015 BRZ engine valve tick? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

DrMusky29 · 03-06-2022, 09:21 PM

Long story short, my 2013 BRZ's engine had rod knock after 146k miles, so in the essence of time and money, I swapped in a used 2015 w/ 80k miles. It runs just fine but... it has what sounds like valve tick but I'm not quite sure.

At 0:05 is when the tick is real prominent, and 0:10 there's a pretty bizarre sound that comes out too that I have no idea what it could be.

Any thoughts?

Thanks in advance.

soundman98 · 03-06-2022, 11:47 PM

the sound at 0:10, did you hear that in person, or only on camera? almost sounds more like a camera/mount noise than a car noise

DrMusky29 · 03-07-2022, 11:22 AM

That sound at 0:10 was also heard in person when I didn’t have my camera on.

blsfrs · 03-07-2022, 12:13 PM

Quote:

Originally Posted by DrMusky29

That sound at 0:10 was also heard in person when I didn’t have my camera on.

Is your ac compressor on? Your hose looks collapsed.

BigTuna · 03-07-2022, 02:00 PM

High Pressure Fuel Pump. Mine makes weird sounds too.

radroach · 03-08-2022, 04:10 PM

Take a long screwdriver and put it to the valve covers, and the handle to your ear to listen for vibration. I barely hear any noise from the valvetrain, its very quiet in there. Use this method to listen around the different parts of the engine, like the fuel pump and injectors, and the transmission.

Another source of noise might be the clutch throw out bearing. A few years ago I was also investigating a weird tapping sound on revs, and it turned out that it was clutch bearing rattle. I'm on my 3rd bearing now!

radroach · 03-08-2022, 04:21 PM

@DrMusky29 here's a video I took when I noticed rattle. Fixed it later by putting in a new TOB.

(there is an audio sync issue in the video)

DrMusky29 · 03-24-2022, 06:17 PM

Well we ruled out an exhaust leak at the heads of the manifold, though there was a substantial leak there, it was not the source of the sounds I’m hearing. I was thinking fuel pump as well, but I always figured the fuel pump made the chirping sounds and not necessarily whatever the hell this is. I’ll try the screwdriver trick and see what happens.

Grady · 03-24-2022, 07:12 PM

That sound at 10 is weird, does not sound engine mechanical. I would disconnect the cabin sound generator for a test.

03-06-2022, 09:21 PM	#1
DrMusky29 Junior Member Join Date: Apr 2019 Drives: 2013 Subaru BRZ Location: Atlanta, GA Posts: 3 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	2015 BRZ engine valve tick? Long story short, my 2013 BRZ's engine had rod knock after 146k miles, so in the essence of time and money, I swapped in a used 2015 w/ 80k miles. It runs just fine but... it has what sounds like valve tick but I'm not quite sure. At 0:05 is when the tick is real prominent, and 0:10 there's a pretty bizarre sound that comes out too that I have no idea what it could be. Any thoughts? Thanks in advance.

03-06-2022, 11:47 PM	#2
soundman98 ProCrastinationConsultant Join Date: Sep 2013 Drives: '14 Ranger, '18 Tacoma 4Dr LB Location: chicago-ish Posts: 11,330 Thanks: 35,240 Thanked 13,673 Times in 6,781 Posts Mentioned: 98 Post(s) Tagged: 0 Thread(s)	the sound at 0:10, did you hear that in person, or only on camera? almost sounds more like a camera/mount noise than a car noise __________________ "The time you enjoy wasting is not wasted time"

03-07-2022, 02:00 PM	#5
BigTuna Senior Member Join Date: Jun 2015 Drives: 2013 WRB BRZ Location: Ohio Posts: 672 Thanks: 258 Thanked 477 Times in 275 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	High Pressure Fuel Pump. Mine makes weird sounds too. __________________ 2013 WRB "Build" Thread

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03-07-2022, 11:22 AM	#3
DrMusky29 Junior Member Join Date: Apr 2019 Drives: 2013 Subaru BRZ Location: Atlanta, GA Posts: 3 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	That sound at 0:10 was also heard in person when I didn’t have my camera on.

03-08-2022, 04:10 PM	#6
radroach Senior Member Join Date: Feb 2013 Drives: car Location: usa Posts: 2,162 Thanks: 1,028 Thanked 867 Times in 530 Posts Mentioned: 35 Post(s) Tagged: 1 Thread(s)	Take a long screwdriver and put it to the valve covers, and the handle to your ear to listen for vibration. I barely hear any noise from the valvetrain, its very quiet in there. Use this method to listen around the different parts of the engine, like the fuel pump and injectors, and the transmission. Another source of noise might be the clutch throw out bearing. A few years ago I was also investigating a weird tapping sound on revs, and it turned out that it was clutch bearing rattle. I'm on my 3rd bearing now!

03-08-2022, 04:21 PM	#7
radroach Senior Member Join Date: Feb 2013 Drives: car Location: usa Posts: 2,162 Thanks: 1,028 Thanked 867 Times in 530 Posts Mentioned: 35 Post(s) Tagged: 1 Thread(s)	@DrMusky29 here's a video I took when I noticed rattle. Fixed it later by putting in a new TOB. (there is an audio sync issue in the video)

03-24-2022, 06:17 PM	#8
DrMusky29 Junior Member Join Date: Apr 2019 Drives: 2013 Subaru BRZ Location: Atlanta, GA Posts: 3 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Well we ruled out an exhaust leak at the heads of the manifold, though there was a substantial leak there, it was not the source of the sounds I’m hearing. I was thinking fuel pump as well, but I always figured the fuel pump made the chirping sounds and not necessarily whatever the hell this is. I’ll try the screwdriver trick and see what happens.

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