N55 Fuel injector gone bad - $3,000? - E90Fanatics


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Old 04-19-2017, 04:09 PM   #1
Seanla
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N55 Fuel injector gone bad - $3,000?

Hi everyone. I have a 2011 335i convertible (N55 engine) with 67,500 miles. Recently, 1 hour into a spirited drive with auto in manual mode and revs around 4000 RPM, the service engine soon light came on along with that half black/orange motor symbol. In park the engine would shake the car on revving. Turned off car for 15 minutes and car was fine. Brought it into an indy shop specializing in BMW, Audi & Porsche. Mechanic computer scanned and measured values to find that #6 injector’s is failing with higher resistance than rest. Rather than replacing a single bad injector, he says that all 6 injectors have to be replaced together – despite the other 5 being good - because they work together via computer. Cost of replacing all 6 injectors is $3000 +. At this point all we did was replace the spark plugs. He said I will have to do the work soon as this misfiring & engine shaking will get worse. So is this mechanic correct? Do I really have to replace all 6 together instead of just the bad injector? $3,000? I’d appreciate your input on this….
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Old 04-21-2017, 05:59 PM   #2
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I'd replace all 6. Why wait until each of the other 5 go out and you have this same issue 5 more times. $3000 sounds high. You might try to get some quotes from other shops before proceeding. I have not had to replace the injectors on mine yet.
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Old 04-21-2017, 06:17 PM   #3
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I'd replace all 6. Why wait until each of the other 5 go out and you have this same issue 5 more times. $3000 sounds high. You might try to get some quotes from other shops before proceeding. I have not had to replace the injectors on mine yet.
Thanks Tootall.
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Old 04-24-2017, 06:13 PM   #4
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UPDATE: Guys, I can't believe how crooked that indy mechanic was. I took the car to the dealer and they diagnosed it as ONE ignition coil gone bad (cylinder 1). Repair cost including diagnostic ($484). The indy mechanic told me it would cost me $3,000 to replace all 6 fuel injectors! He also told me my HPFP was borderline and would go bad in future. Dealer says HPFP is fine. Avoid a company called Euro-Tech in Culver City and Marina del Rey CA for your BMW, Audi or Porsche.
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Old 04-26-2017, 06:45 PM   #5
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UPDATE: Guys, I can't believe how crooked that indy mechanic was. I took the car to the dealer and they diagnosed it as ONE ignition coil gone bad (cylinder 1). Repair cost including diagnostic ($484). The indy mechanic told me it would cost me $3,000 to replace all 6 fuel injectors! He also told me my HPFP was borderline and would go bad in future. Dealer says HPFP is fine. Avoid a company called Euro-Tech in Culver City and Marina del Rey CA for your BMW, Audi or Porsche.
Amazing how daring some of these shops are. If it smells bad, try another.
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Old 04-27-2017, 10:20 PM   #6
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Originally Posted by tootall View Post
Amazing how daring some of these shops are. If it smells bad, try another.
Jose Davila
Founder of EUROTECH MOTORS INC
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Old 04-27-2017, 10:37 PM   #7
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Jose Davila
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Old 04-28-2017, 05:55 PM   #8
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Jose Davila
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Interesting, OP. Do you have an explanation?

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Old 04-29-2017, 05:42 PM   #9
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Jose Davila
Founder of EUROTECH MOTORS INC
I don't see any estimate or cost for injectors as the OP says on this bill. The cost for spark plugs is reasonable, I suppose. I cannot recall the last time I replaced spark plugs on a BMW.
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Old 04-30-2017, 01:41 AM   #10
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Injectors

Now that the OP has gone quiet the time has come to give my side of the story.
My name is Jose Davila founder of Euro-Tech Motors Inc.

This client came asking for an oil change and spark plug replacement. He specifically asked for premium Motul as soon he saw it on the counter. When the price was given for the Motul oil change he immediately changed his request and told us the car is not due for an oil change till November. He still requested replacement of the spark plugs and an estimate was given which was then approved. A request was made to check for faults as the car started acting up after a spirited drive for about an hour.
He stated the car was shaking and lights came on the dashboard, after stopping for a few minutes the car ran fine and drove back to town and as soon as he could he brought it to our shop for an evaluation.

Upon inspection found fault in system for #6 injector implausible signal, upon reading measuring values found resistance on #6 injector higher than the rest. Client was advised of readings and also told that at this time injector is performing within parameters of operation and there is no reason to replace it as all injectors must be replaced at the same time. Client asked cost to replace all injectors and was told around $3000.00. Both the client and I agreed to monitor the operation and I personally told him he may never see the problem again on normal driving and potentially even when driving aggressively. Client was advised if the issue happens again to bring car back for further diagnosis. He happily paid $456.33 for the spark plugs and left with a big smile.

A few days later I see very negative reviews for both of my shops all over the internet.
Client's argument was that the car started shaking 5 minutes after he left my shop and took it to a BMW dealer that is located 18 miles away from my shop. The dealer told him the problem is the #1 ignition coil and then proceeded to replace it for a cost of $484.00.

Here is where the story doesn’t add up at all. He happily paid and left my shop with a big smile, 5 minutes later the car is shaking, (IN LOS ANGELES THE AVERAGE DISTANCE Traveled IN 5 MIN IS 5 BLOCKS). He immediately could have made a u-turn and come back to my shop. Instead he claims he took the car to Nick Alexander BMW 18 miles away when there are 2 dealers within 6 miles of our shop! He never made one attempt to contact us about any issues he encountered.

Lastly is the lack of common sense.
$484.00 was paid at dealer, $456.33 was paid at my shop which sums up to $940.33
With $950.00 we could have replaced all the ignition coils and all the spark plugs together on this particular model.

When the client was notified about a possible case of defamation he threatened us with calling several TV networks and filing a class action lawsuit against us.
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Old 04-30-2017, 02:42 PM   #11
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Wow, it helps to hear both sides of the story.
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Old 05-03-2017, 02:31 AM   #12
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this is the review for both my shops


STAY AWAY! I brought my 2011 BMW 335i last week for engine shaking and "Service Engine Soon" light being on. Jose the owner said he diagnosed the problem via computer to be failing fuel injector # 6. He said that fuel injectors on my BMW cannot be changed individually because they work in sequence thru the engine computer. Therefore all 6 fuel injectors needed to be replaced together for a cost of over $3,000! I posted about this on 5 different BMW forums & even talked with another shop. They all confirmed that fuel injectors can indeed be replaced individually as long as they are part of of the proper sequence and coded appropriately. At worse 3 injectors for each bank. I also found that OEM injectors costs $107 each online and are nowhere near as labor intensive as Jose made out to be. So you do the math. I decided to bite the bullet & took the car to Alexander BMW (dealership). They diagnosed the problem to be a single ignition coil for cylinder 1 and repaired it for $484. My fuel injectors were fine but Jose wanted $3,000 to replace them. I'll let you draw your own conclusion about Jose and Euro-Tech Motors. In any case, STAY AWAY.

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