A few engine issues in my '11 Hardtop
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2nd Gear
Joined: Mar 2011
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From: NH
A few engine issues in my '11 Hardtop
I just called the dealership to make an appointment to have my car looked at. But I wanted to post here to see if you guys could give me some input as to whats going on.
1. Cold start sound. When I start the car up in the morning, the engine sounds fairly loud and rough. It will quiet down after a minute or so.
2. Squealing when idling. Im noticing high-pitched squealing coming from the engine on the passenger side I think, when it's idling. I just noticed it yesterday, and it seems to now do it more often than not.
3. Slip or 'misfire' when accelerating. Especially when in 1st gear. When I reach 2500 RPMs the car feels like it slips or misfires when im accelerating.
1. Cold start sound. When I start the car up in the morning, the engine sounds fairly loud and rough. It will quiet down after a minute or so.
2. Squealing when idling. Im noticing high-pitched squealing coming from the engine on the passenger side I think, when it's idling. I just noticed it yesterday, and it seems to now do it more often than not.
3. Slip or 'misfire' when accelerating. Especially when in 1st gear. When I reach 2500 RPMs the car feels like it slips or misfires when im accelerating.
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2nd Gear
Joined: Mar 2011
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From: NH
I think the squealing sound is the most troubling. I've read a few posts that described the noise and from their end it sounded like something to do with the water pump.
I don't know if the acceleration thing is just me being hyper-sensitive to a new car or not. But I made an appt just in case.
I don't know if the acceleration thing is just me being hyper-sensitive to a new car or not. But I made an appt just in case.
Neutral
Joined: Mar 2011
Posts: 6
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The loud noise at start-up is most likely the following...
Technical Service
SITUATION
SI M18 01 10
Exhaust Systems
December 2010
December 2010
Technical Service
N18 – Cold Start Exhaust Rattle Noise
MODEL
R55 Cooper Clubman S, R56/R57 Cooper S and R60 Cooper Countryman S with N18 engine
SITUATION
The customer complains about a rattle noise coming from the exhaust/turbocharger area during a cold start. The noise lasts for approximately 20-30 seconds after the engine starts and is audible outside the vehicle.
INFORMATION
In order to meet stricter (ULEV2) emissions criteria, the N18 engine turbo wastegate activation strategy has been revised in comparison to Cooper S vehicles equipped with the N14 engine. In higher ambient temperatures (between 64° and 86° F), the turbocharger wastegate stays fully open during a catalyst warm-up. This condition produces a rattle type of “acoustic feedback” and is created by the rotating wastegate valve face. Valve rotation is required for proper valve seating. This type of rattle noise is considered a normal operation/characteristic of the N18 turbocharger wastegate.
My 2011 MCS does this during every cold start.
INFORMATION
In order to meet stricter (ULEV2) emissions criteria, the N18 engine turbo wastegate activation strategy has been revised in comparison to Cooper S vehicles equipped with the N14 engine. In higher ambient temperatures (between 64° and 86° F), the turbocharger wastegate stays fully open during a catalyst warm-up. This condition produces a rattle type of “acoustic feedback” and is created by the rotating wastegate valve face. Valve rotation is required for proper valve seating. This type of rattle noise is considered a normal operation/characteristic of the N18 turbocharger wastegate.
My 2011 MCS does this during every cold start.
4th Gear
Joined: Mar 2011
Posts: 462
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From: San Jose, CA
Chunky is pretty noisy when I start it in the morning as well. Sometimes, I think somebody swapped the engine out with a big a** diesel. But even when it is hot, at idle it is still kinda loud. My of course loud is subjective.
For your other two problems (#2 and #3), I would take it in.
For your other two problems (#2 and #3), I would take it in.
I just called the dealership to make an appointment to have my car looked at. But I wanted to post here to see if you guys could give me some input as to whats going on.
1. Cold start sound. When I start the car up in the morning, the engine sounds fairly loud and rough. It will quiet down after a minute or so.
2. Squealing when idling. Im noticing high-pitched squealing coming from the engine on the passenger side I think, when it's idling. I just noticed it yesterday, and it seems to now do it more often than not.
3. Slip or 'misfire' when accelerating. Especially when in 1st gear. When I reach 2500 RPMs the car feels like it slips or misfires when im accelerating.
1. Cold start sound. When I start the car up in the morning, the engine sounds fairly loud and rough. It will quiet down after a minute or so.
2. Squealing when idling. Im noticing high-pitched squealing coming from the engine on the passenger side I think, when it's idling. I just noticed it yesterday, and it seems to now do it more often than not.
3. Slip or 'misfire' when accelerating. Especially when in 1st gear. When I reach 2500 RPMs the car feels like it slips or misfires when im accelerating.
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4th Gear
Joined: Aug 2010
Posts: 314
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From: Annapolis Md
I know there are some on here that are going to disagree,but I had that idle issue and it was due to a Shell station outside of my normal station that I exclusively used 93 V-Power.It ran like crap and when I let it go empty I refilled with my local Shell and back to running like a top.As said in previous post we don't really know what their filling their tanks with nowadays.......Additionally IT DOES MAKE A DIFFERENCE IN OCTANE,I can attest to that.Are you using premium?
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2nd Gear
Joined: Mar 2011
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From: NH
I've only filled it once since I had it. Went to a Shell down the street and put in Mid-grade. My MA told me since it's a non-S I wouldn't need to do premium, but at least go with the mid. Im just about do for another fill, possibly try using premium?
I've always had cars where you just fill in regular and go. This is the first one that needs a little coddling.
I've always had cars where you just fill in regular and go. This is the first one that needs a little coddling.
4th Gear
Joined: Apr 2011
Posts: 483
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From: Miami, FL
I thought 3 was pretty normal. My 2011 does it too and at first I thought it was strange but I took the car in for something else and they gave me a loaner and the loaner did the same thing.
As for what type of gas, there are a million threads about that with as many opinions. My owners manual says it can run on 87 just fine. The sticker on my gas cap says 89. imo, anything over 89 on a non-S is a waste of money. But, that is just my opinion and I'll probably get slammed for it because I know a lot of people disagree.
As for what type of gas, there are a million threads about that with as many opinions. My owners manual says it can run on 87 just fine. The sticker on my gas cap says 89. imo, anything over 89 on a non-S is a waste of money. But, that is just my opinion and I'll probably get slammed for it because I know a lot of people disagree.
4th Gear
Joined: Aug 2010
Posts: 314
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From: Annapolis Md
I've only filled it once since I had it. Went to a Shell down the street and put in Mid-grade. My MA told me since it's a non-S I wouldn't need to do premium, but at least go with the mid. Im just about do for another fill, possibly try using premium?
I've always had cars where you just fill in regular and go. This is the first one that needs a little coddling.
I've always had cars where you just fill in regular and go. This is the first one that needs a little coddling.
4th Gear
Joined: Aug 2010
Posts: 314
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From: Annapolis Md
Oh ,on another note check your oil and make sure your dipstick is seated well in the tube(fully down)Sometimes it will affect idle.
I only use Chevron 91oct (highest avail in CA) and check my oil religiously and the dipstick is seated properly. Dropping off this morning. Will report back when if I get any more info.
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2nd Gear
Joined: Mar 2011
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From: NH
Im going to try out the premium when I fill up today. See if there's any difference. Its only going to be an extra $ or so over the 89, so I'd say it's worth it to give it a shot. I know there are a ton of gas threads around here, but Shell and Chevron(none in my area) seem to be the favorites. Anyone had good results with Phillips 66? Seems to be on the top tier list. Now Im just nitpicking.... 
Last edited by Juancho; Jun 1, 2011 at 09:53 AM. Reason: Hit submit on accident
4th Gear
Joined: Nov 2010
Posts: 493
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From: Charlotte, NC
I thought 3 was pretty normal. My 2011 does it too and at first I thought it was strange but I took the car in for something else and they gave me a loaner and the loaner did the same thing.
As for what type of gas, there are a million threads about that with as many opinions. My owners manual says it can run on 87 just fine. The sticker on my gas cap says 89. imo, anything over 89 on a non-S is a waste of money. But, that is just my opinion and I'll probably get slammed for it because I know a lot of people disagree.
As for what type of gas, there are a million threads about that with as many opinions. My owners manual says it can run on 87 just fine. The sticker on my gas cap says 89. imo, anything over 89 on a non-S is a waste of money. But, that is just my opinion and I'll probably get slammed for it because I know a lot of people disagree.
4th Gear
Joined: Aug 2010
Posts: 314
Likes: 0
From: Annapolis Md
Im going to try out the premium when I fill up today. See if there's any difference. Its only going to be an extra $ or so over the 89, so I'd say it's worth it to give it a shot. I know there are a ton of gas threads around here, but Shell and Chevron(none in my area) seem to be the favorites. Anyone had good results with Phillips 66? Seems to be on the top tier list. Now Im just nitpicking....
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2nd Gear
Joined: Mar 2011
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From: NH
I'm not familiar with Phillips 66.Do you have a Texaco(same co. as Chevron) they both have the Techron additive to them which is good.I put Techron in mine about every 3000 mi.or so or before an oil change.You might try some ,it can't hurt.Quite a few people on here have tried it with good results including me.
5th Gear
Joined: Mar 2011
Posts: 754
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From: Mt. Pleasant, SC
I've been using Mobil (only station on Top Tier list around me at the moment) for 3 fill up ands I also experience 2 and 3 except I feel like I experience 3 when decelerating, my car is going in tomorrow morning for a few things.
4th Gear
Joined: Mar 2011
Posts: 462
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From: San Jose, CA
Misfire, do you hear a sound associated with this? Or do you feel a jolt while driving??
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2nd Gear
Joined: Mar 2011
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From: NH
[QUOTE=darthhen;3296674]I'm going to check on this in more detail on my Mini later. But are you hearing the squealing when you're sitting inside the car? Or you're standing in front of the car? [/QOUTE]
I've only noticed it when standing outside the car. It first started when my son was swinging on one of those bench swings, and it sounded like it was a squeaking from the swing. I told him to stop and the sound kept going. I lifted up the hood and it sounded the loudest when I put my ear up to the upper passenger's side of the engine.
No sound. More like a hesitation. I will accelerate and it will skip just for a split second, then continue on accelerating. It only happens, that I've noticed at around 2500-3000 RPMs. Mostly in 1st gear.
I've only noticed it when standing outside the car. It first started when my son was swinging on one of those bench swings, and it sounded like it was a squeaking from the swing. I told him to stop and the sound kept going. I lifted up the hood and it sounded the loudest when I put my ear up to the upper passenger's side of the engine.
No sound. More like a hesitation. I will accelerate and it will skip just for a split second, then continue on accelerating. It only happens, that I've noticed at around 2500-3000 RPMs. Mostly in 1st gear.
3rd Gear
Joined: Dec 2010
Posts: 227
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From: Phoenix AZ
I just called the dealership to make an appointment to have my car looked at. But I wanted to post here to see if you guys could give me some input as to whats going on.
1. Cold start sound. When I start the car up in the morning, the engine sounds fairly loud and rough. It will quiet down after a minute or so.
2. Squealing when idling. Im noticing high-pitched squealing coming from the engine on the passenger side I think, when it's idling. I just noticed it yesterday, and it seems to now do it more often than not.
3. Slip or 'misfire' when accelerating. Especially when in 1st gear. When I reach 2500 RPMs the car feels like it slips or misfires when im accelerating.
1. Cold start sound. When I start the car up in the morning, the engine sounds fairly loud and rough. It will quiet down after a minute or so.
2. Squealing when idling. Im noticing high-pitched squealing coming from the engine on the passenger side I think, when it's idling. I just noticed it yesterday, and it seems to now do it more often than not.
3. Slip or 'misfire' when accelerating. Especially when in 1st gear. When I reach 2500 RPMs the car feels like it slips or misfires when im accelerating.
here is a video i made couple of months ago
http://www.youtube.com/watch?v=QenijI4A4xg
Last edited by cesar418; Jun 1, 2011 at 06:59 PM.
as of now they say the clutch seems good and they cannot reproduce the whine noise... keeping it overnight to see if they can reproduce with a cold start in the morning.
They did mention the description of the whine did sound like it could be the water pump issue.
I've only noticed it when standing outside the car. It first started when my son was swinging on one of those bench swings, and it sounded like it was a squeaking from the swing. I told him to stop and the sound kept going. I lifted up the hood and it sounded the loudest when I put my ear up to the upper passenger's side of the engine.
No sound. More like a hesitation. I will accelerate and it will skip just for a split second, then continue on accelerating. It only happens, that I've noticed at around 2500-3000 RPMs. Mostly in 1st gear.
I hear my whine/squealing from inside and outside the car but mostly inside... Also I guess i should mention i have a 2011 JCW so i have the N14 engine, not the new N18 that most 2011s have. So perhaps are issue are unrelated, but strange they are so similar, my "misfire" is exactly as you describe.
but they're so damn fun to drive...
They did mention the description of the whine did sound like it could be the water pump issue.
No sound. More like a hesitation. I will accelerate and it will skip just for a split second, then continue on accelerating. It only happens, that I've noticed at around 2500-3000 RPMs. Mostly in 1st gear.
Originally Posted by mattsenpai;
engine issues in a 2011,
..yet people still purchase these little moneysuckers
..yet people still purchase these little moneysuckers
4th Gear
Joined: Apr 2011
Posts: 483
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From: Miami, FL
You have a Mini S, I do not. They are different engines and have different octane requirements.