Fuel injector cleaner help.

BashShah · 07-02-2014, 06:17 AM

Car is a 2007 335i Sedan.
Build sept 06, if this matters.

I am starting to have a slight ruff idle without codes.
It is clearly missing every 10-15 sec, at start up till it heats up to normal temp.

Walnut blast done less than 20k ago.

Heard and read about techron fuel system cleaner.
Bought the 6 pack from Costco.
Havn't used it yet, as car gas is full.
Bottle says to ad to 12 gal.

My question is, did I buy the wrong stuff? (Edit Pictures added for what I bought)
What is the techron fuel system cleaner?
And what is techron concentrate fuel system cleaner.

Heard and read that this may fix my ever so slight issue.
But which one?

Thanks in advance.
DN

Delta0311 · 07-02-2014, 06:31 AM

I take it you got the one that treats up to 12 gallons. We got like a 16 gallon (might be a bit more) fuel tank, so go for the 20 gallon bottle. All you do is dump the bottle in before you fill up.

F36Vader · 07-02-2014, 07:14 AM

Chevron techron isn't ready available in my city (Toronto) so I opted for "Gumout Fuel Injector Cleaner"
I can confirm that it REALLY helped with the rough idles. I was actually getting vibrations.. Also Walnut blast has been done 7,XXX ago.

Once you dump the cleaner in I suggest driving the car in DS mode or just let it hit the higher revs to really clean those injectors.

335NJ · 07-02-2014, 08:41 AM

I just ran a bottle of the Techron stuff through my car, and it seems to have smoothed the idle out A LITTLE bit. My assumption is you have to continuously run this stuff a few fill ups for the maximum effect. Or, my valves are carbon caked and need cleaning which no additive will help with.

Sandman614 · 07-02-2014, 08:53 AM

Aren't you supposed to wait till the tank is near empty, put in the techron, then fill up

Delta0311 · 07-02-2014, 09:04 AM

Quote:

Originally Posted by Sandman614

Aren't you supposed to wait till the tank is near empty, put in the techron, then fill up

Yup that's the way I always done it.

David1 · 07-02-2014, 10:21 AM

You have an injector or two starting to wear out.

Louiscipher · 07-02-2014, 10:25 AM

Quote:

Originally Posted by Delta0311

Yup that's the way I always done it.

^^^What they said is correct, I have a bottle of Liquid Molly fuel cleaner I will try in mine when I take a trip to Savannah this weekend.

http://www.liqui-moly.de/liquimoly/p...cument&land=GB

Longdoggy · 07-02-2014, 10:36 AM

Chevron techron... Good stuff.
If you have rough idle, try a 20g bottle before every other fill up for about 2-3 cycles and see if it helps.
If not you may need some engine work done. But continue techron treatment like every 2k-6k miles to keep things working well.

Read about the stuff, some experiments were done with some fantastic results.
If you can't buy local check Amazon. $6 bucks and change.

Highly recommend.

BashShah · 07-02-2014, 11:17 AM

So I bought from Costco USA. $19 for 6 of them.

Toronto guy, call your local Costco, they have it here in Costco in BC. I was just state side on Canada day do just bought it there.

Also, what exactly is the point of putting this stuff in before fill up or after, it will still mix right?

DN

David1 · 07-02-2014, 11:43 AM

Once a DI injector has an issue it's done. Also, many times it's the electronics (the piezo section) that is bad and has nothing to do with the injector being clean or dirty.

BashShah · 07-02-2014, 04:49 PM

Quote:

Originally Posted by David1

Once a DI injector has an issue it's done. Also, many times it's the electronics (the piezo section) that is bad and has nothing to do with the injector being clean or dirty.

David can you clarify this please?
I would like too look this up.

DN

Hotsauce335 · 07-02-2014, 04:54 PM

Quote:

Originally Posted by David1

You have an injector or two starting to wear out.

My thought too, either wearing out or starting to leak. Can you isolate what cylinder? If so, swap the injectors & see if the problem migrates?

DJtoad · 07-02-2014, 05:16 PM

Quote:

Originally Posted by DarkNemesis

So I bought from Costco USA. $19 for 6 of them.

Toronto guy, call your local Costco, they have it here in Costco in BC. I was just state side on Canada day do just bought it there.

Also, what exactly is the point of putting this stuff in before fill up or after, it will still mix right?

DN

Did you get Chevron Technron concentrate or Chevron Pro-Gard with Technron? I think Costco sells the latter and they're not the same. The cheaper Pro-Gard product is to help keep the fuel system clean, not actually clean deposits. It has a much lower concentration of Techron and is therefore much cheaper in price.

GB-335xiCoupe · 07-02-2014, 06:09 PM

Quote:

Originally Posted by Hotsauce335

My thought too, either wearing out or starting to leak. Can you isolate what cylinder? If so, swap the injectors & see if the problem migrates?

I seem to remember reading somewhere, that you have to do some coding if you swap your injectors. Not sure, I've not researched it...

Sandman614 · 07-02-2014, 07:18 PM

Quote:

Originally Posted by GB-335xiCoupe

I seem to remember reading somewhere, that you have to do some coding if you swap your injectors. Not sure, I've not researched it...

you have to code the injector flow calibration to the new cylinder using INPA

Hotsauce335 · 07-03-2014, 08:09 AM

If the OP considers the injector swap & program route, here is a link to some helpful information http://www.n54tech.com/forums/showthread.php?t=15140

BashShah · 07-03-2014, 12:18 PM

OP Here, I got this: Techron Fuel Injector Cleaner
16 FL. OZ. (472 mL)
see Pictures in edited first Post.

Chriztofor · 07-12-2014, 09:59 AM

By the way, guess what brand the BMW dealership is using.

BashShah · 07-12-2014, 03:43 PM

Quote:

Originally Posted by Chriztofor

By the way, guess what brand the BMW dealership is using.

Thanks Chris.... Guess I am returning the stuff from Costco.

DN

kaede · 07-12-2014, 04:13 PM

Quote:

Originally Posted by DarkNemesis

Thanks Chris.... Guess I am returning the stuff from Costco.

DN

Yes go return that. That is not the same as the Techron Concentrate Plus - Fuel System Cleaner. Good Luck!!

Tom Droze · 07-12-2014, 04:46 PM

Make certain you do not confuse Chevron Pro-Gard with Chevron Techron. The Techron is the good stuff.

07-02-2014, 06:17 AM	#1
BashShah Colonel 312 Rep 2,020 Posts Drives: 2012 335i Sedan Join Date: Oct 2012 Location: Vancouver, Canada iTrader: (0)	Fuel injector cleaner help. Car is a 2007 335i Sedan. Build sept 06, if this matters. I am starting to have a slight ruff idle without codes. It is clearly missing every 10-15 sec, at start up till it heats up to normal temp. Walnut blast done less than 20k ago. Heard and read about techron fuel system cleaner. Bought the 6 pack from Costco. Havn't used it yet, as car gas is full. Bottle says to ad to 12 gal. My question is, did I buy the wrong stuff? (Edit Pictures added for what I bought) What is the techron fuel system cleaner? And what is techron concentrate fuel system cleaner. Heard and read that this may fix my ever so slight issue. But which one? Thanks in advance. DN Attached Images Last edited by BashShah; 07-03-2014 at 12:31 PM.. Reason: adding Pictures.
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07-02-2014, 06:31 AM	#2
Delta0311 Banned 7485 Rep 10,119 Posts Drives: 2011 BMW 335xi E92 2016 228xi Join Date: Apr 2009 Location: NJ iTrader: (1)	I take it you got the one that treats up to 12 gallons. We got like a 16 gallon (might be a bit more) fuel tank, so go for the 20 gallon bottle. All you do is dump the bottle in before you fill up.
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07-02-2014, 07:14 AM	#3
F36Vader First Lieutenant 294 Rep 307 Posts Drives: 435i Gran Coupe Join Date: Jun 2014 Location: Toronto iTrader: (1)	Chevron techron isn't ready available in my city (Toronto) so I opted for "Gumout Fuel Injector Cleaner" I can confirm that it REALLY helped with the rough idles. I was actually getting vibrations.. Also Walnut blast has been done 7,XXX ago. Once you dump the cleaner in I suggest driving the car in DS mode or just let it hit the higher revs to really clean those injectors. __________________ 2015 435i xDrive Gran Coupe - Black Sapphire, M Sport, MPPK, MPE RIP; 2015 C63 AMG Coupe - Obsidian Black, 507 Edition RIP; 2009 335i Sedan - Titanium Silver, Sport pkg, Premium pkg, FBO
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07-02-2014, 08:41 AM	#4
335NJ Colonel 534 Rep 2,872 Posts Drives: 2008 335i 6MT E90 Join Date: Feb 2014 Location: NJ/Philadelphia Suburbs iTrader: (1)	I just ran a bottle of the Techron stuff through my car, and it seems to have smoothed the idle out A LITTLE bit. My assumption is you have to continuously run this stuff a few fill ups for the maximum effect. Or, my valves are carbon caked and need cleaning which no additive will help with. __________________ *BSM E90 6MT*-JB4 G5 ISO-BMS DCI-Golf-Tee Mod-Hankook S1N2 Non-RFT-ER Chargepipe/TiAL BOV-E40 blend-VRSF V2's-M3 CDV-MHD/JB4 FLASH-VRSF 5" STEPPED FMIC
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07-02-2014, 08:53 AM	#5
Sandman614 Accepting Donations 10 Rep 333 Posts Drives: Montego Blue E92 Join Date: Jun 2013 Location: Columbus, OH iTrader: (0) Garage List 2009 E92 335xi [0.00]	Aren't you supposed to wait till the tank is near empty, put in the techron, then fill up __________________ 2009 Montego Blue E92 Sold
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07-02-2014, 10:21 AM	#7
David1 Brigadier General 945 Rep 4,034 Posts Drives: 09 E92 09 X5 Join Date: Mar 2007 Location: Columbus, OH iTrader: (1)	You have an injector or two starting to wear out. __________________ 2021 M2 Comp Sunset Orange \|Black with orange Stitching Dakota Leather\|Executive Pkg\|DCT
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07-02-2014, 10:36 AM	#9
Longdoggy Master Bates 82 Rep 495 Posts Drives: 2020 BMW M340 xDrive Join Date: Jun 2014 Location: New York iTrader: (0)	Chevron techron... Good stuff. If you have rough idle, try a 20g bottle before every other fill up for about 2-3 cycles and see if it helps. If not you may need some engine work done. But continue techron treatment like every 2k-6k miles to keep things working well. Read about the stuff, some experiments were done with some fantastic results. If you can't buy local check Amazon. $6 bucks and change. Highly recommend. __________________ CURRENT: 2020 G20 M340 xDrive — Carbahn Tune RETIRED: 2011 E90 335i xDrive — Cobb AP3, PE Exhaust, Alpina TCU Flash, VRSF Charge Pipe 2017 Estoril Blue X1 M Sport — JB4
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07-02-2014, 11:17 AM	#10
BashShah Colonel 312 Rep 2,020 Posts Drives: 2012 335i Sedan Join Date: Oct 2012 Location: Vancouver, Canada iTrader: (0)	So I bought from Costco USA. $19 for 6 of them. Toronto guy, call your local Costco, they have it here in Costco in BC. I was just state side on Canada day do just bought it there. Also, what exactly is the point of putting this stuff in before fill up or after, it will still mix right? DN
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07-02-2014, 11:43 AM	#11
David1 Brigadier General 945 Rep 4,034 Posts Drives: 09 E92 09 X5 Join Date: Mar 2007 Location: Columbus, OH iTrader: (1)	Once a DI injector has an issue it's done. Also, many times it's the electronics (the piezo section) that is bad and has nothing to do with the injector being clean or dirty. __________________ 2021 M2 Comp Sunset Orange \|Black with orange Stitching Dakota Leather\|Executive Pkg\|DCT
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07-03-2014, 08:09 AM	#17
Hotsauce335 New Member 0 Rep 12 Posts Drives: Hunting for 335 Join Date: Jun 2014 Location: Canada iTrader: (0)	If the OP considers the injector swap & program route, here is a link to some helpful information http://www.n54tech.com/forums/showthread.php?t=15140
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07-03-2014, 12:18 PM	#18
BashShah Colonel 312 Rep 2,020 Posts Drives: 2012 335i Sedan Join Date: Oct 2012 Location: Vancouver, Canada iTrader: (0)	OP Here, I got this: Techron Fuel Injector Cleaner 16 FL. OZ. (472 mL) see Pictures in edited first Post. Last edited by BashShah; 07-03-2014 at 12:32 PM..
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07-12-2014, 09:59 AM	#19
Chriztofor Colonel 103 Rep 2,783 Posts Drives: '06 325i and '13 X5 Join Date: Feb 2010 Location: Chicago Burbs iTrader: (1)	By the way, guess what brand the BMW dealership is using. Attached Images __________________ If no codes are being thrown use Chevron Techron fuel injector cleaner (concentrate). It solves rpm fluctuating upon cold start-up. Also, for most BMW problems start off by scanning your car with the Peake Research Tool. It contains the actual BMW codes. If you want to register a newly installed battery for free (just buy a $10 cable) and google/download BMWLogger
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07-12-2014, 04:46 PM	#22
Tom Droze Major 413 Rep 1,286 Posts Drives: 2012 BMW 328i (e92) Join Date: Jul 2014 Location: Scottsdale, Arizona iTrader: (0)	Make certain you do not confuse Chevron Pro-Gard with Chevron Techron. The Techron is the good stuff. Attached Images __________________ 2012 Jet Black 328i Coupe / ESS Tuning Gen. 2 Supercharger / Evolution Racewerks Oil Cooler / BMS Oil Catch Can / BMW Performance Exhaust with Dinan Y Pipe / Eibach Pro Kit Springs / Koni FSD Shocks / MFactory LSD & Differential Bushings / Performance Rear Trailing Arms / BMW Performance Strut Brace / Stop Tech Slotted Rotors / Hawk HPS 5.0 / SS Brake Lines / Brass Guide Pins / M3 Front Control Arms, 28 MM FSB, Engine Cowl, and DCT Paddle Shifters / Michelin PSS / APEX ARC-8
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