Diesel sound below 2k RPM - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Panecki17 · 08-10-2012, 10:02 AM

This may have been posted before but I have not been able to find it.

I’m getting some strange engine noise between 0 - 2k RMPs. It sounds very low and guttural, almost like a diesel. The noise is there under normal driving conditions, but it becomes much more noticeable if it’s been running for over an hour. This is my first Subaru/boxer engine, is this normal? The sound completely goes away above 2k RPM.

brianbot5000 · 08-10-2012, 10:13 AM

My guess is it's pretty normal. This is my second Subaru and I felt the same way with my first - 2002 wrx. I thought it sounded rough and diesel-like at low RPMs...that "glug glug" sound. But it always smooths out at higher RPMs. I don't think it's a big deal, if it's what I'm imagining.

Stu baru · 08-10-2012, 10:41 AM

Engine turns to driver and says "more gas please".

deucethemoose · 08-10-2012, 10:42 AM

What gear/speed are you in when this happens

davisk6 · 08-10-2012, 10:52 AM

Quote:

Originally Posted by Panecki17

This may have been posted before but I have not been able to find it.

I’m getting some strange engine noise between 0 - 2k RMPs. It sounds very low and guttural, almost like a diesel. The noise is there under normal driving conditions, but it becomes much more noticeable if it’s been running for over an hour. This is my first Subaru/boxer engine, is this normal? The sound completely goes away above 2k RPM.

Pretty normal for all Subaru motors. This is my 3rd Subaru. All 2 of my previous WRXs did this. My parents Outback and my sister's Impreza all do this.

eriktherod · 08-10-2012, 11:12 AM

My guess is that it's the Subaru design and exacerbated by the fact it's on DI only at those RPMs (I believe).

Panecki17 · 08-10-2012, 11:22 AM

Awesome, thanks for putting my mind at ease :happy0180:

Kwaziekeller · 08-10-2012, 12:00 PM

Yup, pretty normal... the DI doesn't help @ all, especially with the chirp lol. I'm waiting for someone to ask if it's a diesel @ a stoplight! lol

norm24 · 08-10-2012, 05:31 PM

Same issue I have and I was worried, until I found this thread... Here's my comment on another thread:

"I've driven nothing but manual since I was 9. Most, if not, all of them are inline 4's, the latest being an 09 TSX, which is extremely smooth and quiet. Not sure if it's normal, but if I try to launch the car at below 2k rpm, it makes this weird/loud noise, almost like the noise coming from buses. It seems like the boxer version of an engine "ping"... With my TSX, I can make the car start rolling (quietly)by just easing off the clutch no gas. With this car, I can, but it makes a weird noise. Is this normal? Sorry... this is my first boxer/d4s."

Sigh-on-Rice · 08-10-2012, 06:44 PM

Quote:

Originally Posted by norm24

Same issue I have and I was worried, until I found this thread... Here's my comment on another thread:

"I've driven nothing but manual since I was 9. Most, if not, all of them are inline 4's, the latest being an 09 TSX, which is extremely smooth and quiet. Not sure if it's normal, but if I try to launch the car at below 2k rpm, it makes this weird/loud noise, almost like the noise coming from buses. It seems like the boxer version of an engine "ping"... With my TSX, I can make the car start rolling (quietly)by just easing off the clutch no gas. With this car, I can, but it makes a weird noise. Is this normal? Sorry... this is my first boxer/d4s."

I kind of have a feeling you're talking about the clutch noise instead of the engine noise. But either way, I hear it's normal.

TennisHsu · 08-14-2012, 01:08 PM

I'm experiencing the same sounds on slow/smooth take offs in 1st (especially in traffic). After the engine has warmed up, the diesel like sound growls (right when the clutch has fully engaged) and disappears past 2K. I was/am still, under the impression that I am not giving the car enough gas, and lugging the engine.... Car still pulls but the sound has gotten me all paranoid about my driving style... hope I'm not hurting the car

08-10-2012, 10:02 AM	#1
Panecki17 Member Join Date: Aug 2012 Drives: Subaru BRZ Location: Boston Posts: 10 Thanks: 0 Thanked 2 Times in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Diesel sound below 2k RPM This may have been posted before but I have not been able to find it. I’m getting some strange engine noise between 0 - 2k RMPs. It sounds very low and guttural, almost like a diesel. The noise is there under normal driving conditions, but it becomes much more noticeable if it’s been running for over an hour. This is my first Subaru/boxer engine, is this normal? The sound completely goes away above 2k RPM.

08-10-2012, 10:13 AM	#2
brianbot5000 Senior Member Join Date: Feb 2012 Drives: White WRX Hatchback, Toyota Pickup Location: Seattle Posts: 189 Thanks: 14 Thanked 58 Times in 23 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	My guess is it's pretty normal. This is my second Subaru and I felt the same way with my first - 2002 wrx. I thought it sounded rough and diesel-like at low RPMs...that "glug glug" sound. But it always smooths out at higher RPMs. I don't think it's a big deal, if it's what I'm imagining. __________________ 2013 Subaru BRZ, SSM Limited vin: 6007xx build: 3/2012

08-10-2012, 10:42 AM	#4
deucethemoose Functionally Retarded Join Date: Jan 2012 Drives: LinkECU V6 MR2 - MKVII Golf R Location: PNW Posts: 709 Thanks: 81 Thanked 425 Times in 205 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	What gear/speed are you in when this happens __________________ 1991 MR2 - T-tops - Crimson Red - 1MZ-FE 3.0L - Other Stuff I'm not really an asshole, but I play one on the internet.

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08-10-2012, 10:41 AM	#3
Stu baru Official Cobb beer knurd Join Date: Jul 2012 Drives: 2013 BRZ-L MT SWP Location: USA Posts: 168 Thanks: 45 Thanked 34 Times in 28 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Engine turns to driver and says "more gas please".

08-10-2012, 11:22 AM	#7
Panecki17 Member Join Date: Aug 2012 Drives: Subaru BRZ Location: Boston Posts: 10 Thanks: 0 Thanked 2 Times in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Awesome, thanks for putting my mind at ease :happy0180:

08-10-2012, 05:31 PM	#9
norm24 Senior Member Join Date: Apr 2012 Drives: TSX Location: Coquitlam, BC Posts: 162 Thanks: 27 Thanked 74 Times in 42 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Same issue I have and I was worried, until I found this thread... Here's my comment on another thread: "I've driven nothing but manual since I was 9. Most, if not, all of them are inline 4's, the latest being an 09 TSX, which is extremely smooth and quiet. Not sure if it's normal, but if I try to launch the car at below 2k rpm, it makes this weird/loud noise, almost like the noise coming from buses. It seems like the boxer version of an engine "ping"... With my TSX, I can make the car start rolling (quietly)by just easing off the clutch no gas. With this car, I can, but it makes a weird noise. Is this normal? Sorry... this is my first boxer/d4s."

08-14-2012, 01:08 PM	#11
TennisHsu Senior Member Join Date: Jun 2012 Drives: 2013 Whiteout MT Scion FR-S Location: United States Posts: 135 Thanks: 109 Thanked 62 Times in 31 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I'm experiencing the same sounds on slow/smooth take offs in 1st (especially in traffic). After the engine has warmed up, the diesel like sound growls (right when the clutch has fully engaged) and disappears past 2K. I was/am still, under the impression that I am not giving the car enough gas, and lugging the engine.... Car still pulls but the sound has gotten me all paranoid about my driving style... hope I'm not hurting the car

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