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Old 04-25-2013, 05:49 PM   #1
Chicago AJ
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Default Faint Plastic Smell After WOT

I've got about 850 miles on my WRX sedan, after a couple wot runs in a single gear to around 6000 rpm I noticed a real faint plastic smell. It's not oil or coolant, exhaust doesn't smoke any color and there's no leaks of any kind on the engine. It doesn't do it every time either.

Is this just the engine breaking in or should I take it in?
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Old 04-25-2013, 05:50 PM   #2
easyeatlanta
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there are cerain coatings on the car from factory that like to burn out when they get hot probably fine
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Old 04-25-2013, 05:52 PM   #3
Ruzty1311
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Lol ok first off did you not listen to your dealer or did he just not tell you to not go over 3500 rpms for the first 1000miles? Its actually common sense and no matter what anybody tells you you shoulr never open up the car before 1000miles!!! Don't do it again until you hit at least 2k is my suggestion and if you still smell something weird take it in...you probably already damaged something or are about to :/
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Old 04-25-2013, 05:54 PM   #4
Ruzty1311
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Quote:
Originally Posted by easyeatlanta View Post
there are cerain coatings on the car from factory that like to burn out when they get hot probably fine
This is also true
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Old 04-25-2013, 05:59 PM   #5
Chicago AJ
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They said 500 miles and do whatever you want, there's also a hard break in method, maybe you should look it up. There's so many different methods to break in motors, none are proven to be 100% effective. You're not going to clear off imperfections from the cylinder walls by driving like a grandma.

I test drove multiple different WRX's with less than a 100 miles and every dealer let me take them on the highway wot multiple times. If a car is going to break, it's going to break whether it was babied or not.

I got my car with 140 miles on it. I'm sure it was driven hard, there's a warranty for a reason.
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Old 04-25-2013, 06:19 PM   #6
Ruzty1311
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You obviously think you know more about cars yet your asking for advice as to why you smell something plastic burning on a new car after going WOT :/ And not going over 3500rpms for the first 1000 miles isn't driving the car like a grandma lol Its properly breaking in the motor. Go ahead and keep driving it hard bro....I'm sure if its gonna break it'll break haha
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Old 04-25-2013, 06:25 PM   #7
Chicago AJ
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Quote:
Originally Posted by easyeatlanta View Post
there are cerain coatings on the car from factory that like to burn out when they get hot probably fine
Thanks for this reply, this seems most likely.
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Old 04-25-2013, 06:32 PM   #8
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Your car is broke.

Sell it to me for $2.

It's the parts being heated up and the cosmoline being burnt off. ( I think that's how it's spelled)
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Old 04-25-2013, 06:34 PM   #9
Chicago AJ
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Quote:
Originally Posted by Ruzty1311 View Post
You obviously think you know more about cars yet your asking for advice as to why you smell something plastic burning on a new car after going WOT :/ And not going over 3500rpms for the first 1000 miles isn't driving the car like a grandma lol Its properly breaking in the motor. Go ahead and keep driving it hard bro....I'm sure if its gonna break it'll break haha
It's a smell I'm unfamiliar with. I grew up around cars. Figured I'd ask, I didn't ask about breaking my car in, did I? Think of it like this, if you're training for a marathon, you run little by little to get there. You don't walk until the day of the marathon and then try and finish it. You'll end up hurting yourself.

Same goes for engines, you don't want to baby them until so many miles then go full boost when they haven't even been close. You'll shock the system. I've gone to full boost about every other time I've driven the car.

Subaru doesn't say, "if you go to redline before 1000 miles your warranty is voided." It's a recommendation. They know people are buying these cars to drive them hard. As long as you don't launch it, burn up the clutch, over-rev etc. and get oil changes at the right times your car will be fine. I went to 4 different dealers around my area and they all said if you're going to floor it, don't do it in more than 1 gear at a time.
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Old 04-25-2013, 06:36 PM   #10
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Quote:
Originally Posted by Ruzty1311 View Post
Lol ok first off did you not listen to your dealer or did he just not tell you to not go over 3500 rpms for the first 1000miles? Its actually common sense and no matter what anybody tells you you shoulr never open up the car before 1000miles!!! Don't do it again until you hit at least 2k is my suggestion and if you still smell something weird take it in...you probably already damaged something or are about to :/
3500??? That's horse****. I just got a brand new ej257, and I was told by Dom from Maxwell Power Services (a very very reputable build company) to keep it under 5000 for the first 1000 miles. How the hell is the engine ever going to break in if you don't get into a little boost everyday you drive it? I mean, don't beat the **** out of it but don't baby it either.
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Old 04-25-2013, 06:38 PM   #11
Bo0stin5STI
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Quote:
Originally Posted by 07STifastashell View Post
3500??? That's horse****. I just got a brand new ej257, and I was told by Dom from Maxwell Power Services (a very very reputable build company) to keep it under 5000 for the first 1000 miles. How the hell is the engine ever going to break in if you don't get into a little boost everyday you drive it? I mean, don't beat the **** out of it but don't baby it either.
Cool your jets bud!

Was this 257 you speak of a built 257? Or new 257 out of a crate from Subaru?

FYI, there is a huge difference between the two.
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Old 04-25-2013, 06:41 PM   #12
07STifastashell
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Quote:
Originally Posted by Bo0stin5STI View Post

Cool your jets bud!

Was this 257 you speak of a built 257? Or new 257 out of a crate from Subaru?

FYI, there is a huge difference between the two.
I'm not mad or anything haha. Not built at all. Completely stock block, but with killer b oil pickup. Full bolt ons though. It's the same break in process because the block is still oem. Also, Dom said don't run through gears for 1000 miles. Small pull in one gear is fine. Never floor (100% throttle open) your car is 4th, 5th, or 6th gear though.
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Old 04-25-2013, 06:47 PM   #13
Chicago AJ
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Everyone needs to remember that engines aren't magically broken in at 1000 miles either. Small 1 gear pulls are fine for the first 500. I don't ever plan on launching or power shifting, so I've been breaking it in how I would normally drive. 2nd or 3rd gear pulls to pass, 1st every once in a while.
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Old 04-25-2013, 06:51 PM   #14
Ruzty1311
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Ok well I admit I went to at least 4k at half throttle for the first 1k but still....I would heed the recommendation and I did....I guess its personal preference and if you want break something on a new car then that's all on you Not saying you will but it could happen. Also if you were to mess that clutch up so early I doubt the dealership would honor replacing ot under warranty....all dealerships are different tho so it just depends where you go I guess....your car is probably fine like everybody said
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Old 04-25-2013, 06:57 PM   #15
Chicago AJ
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I don't slip the clutch or launch and always push it to the ground. They can tell if a car was abused or not. I think of abuse as power shifting, launching, shifting without the clutch, etc. I drive it easy but romp on it from time to time. I only drive about 3,000 miles a year since I work 4 miles from home. Ain't no way in hell I'm waiting for 1k miles to start enjoying the car.
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Old 04-25-2013, 06:57 PM   #16
07STifastashell
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Quote:
Originally Posted by Ruzty1311 View Post
Ok well I admit I went to at least 4k at half throttle for the first 1k but still....I would heed the recommendation and I did....I guess its personal preference and if you want break something on a new car then that's all on you Not saying you will but it could happen. Also if you were to mess that clutch up so early I doubt the dealership would honor replacing ot under warranty....all dealerships are different tho so it just depends where you go I guess....your car is probably fine like everybody said
Technically, anything could happen. Your engine could still blow up even if you drive it as carefully as possible. Everyone has their own opinions on how to break in an engine, but I'm going to listen to the guy whose been building Subaru engines for over 15 years...
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Old 04-25-2013, 07:05 PM   #17
Chicago AJ
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I'm just listening to the dealer who's going to fix my car if anything does happen, lol.

Thanks for all the responses. I got the answer that seems most probable. This can be closed now.
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Old 04-25-2013, 08:30 PM   #18
Ruzty1311
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Quote:
Originally Posted by Chicago AJ View Post
I don't slip the clutch or launch and always push it to the ground. They can tell if a car was abused or not. I think of abuse as power shifting, launching, shifting without the clutch, etc. I drive it easy but romp on it from time to time. I only drive about 3,000 miles a year since I work 4 miles from home. Ain't no way in hell I'm waiting for 1k miles to start enjoying the car.
Lol yea I guess if I only got to drive my car as much as you I wouldn't take it easy either Enjoy!
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