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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Wed, Mar-14-2018, 04:44:31 AM   #1
Daily Driver
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Default Injector flooded cylinder - Long term problems?

I was driving my 2003 to work yesterday when the EML light came on and the engine went into limp mode. I pulled over within 1/2 a block. Turned off the engine, and it failed to restart. No problems turning over.

I had it towed to my Indy where they let me know that the cylinder was full of gas but there was no issues. I had the oil changed.

Do you think there will be any long term damage to the engine such as head gasket issues?
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Old Wed, Mar-14-2018, 04:52:50 AM   #2
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Default Re: Injector flooded cylinder - Long term problems?

If it didn't bend a rod and still has compression? No.
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Old Wed, Mar-14-2018, 06:44:29 PM   #3
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Default Re: Injector flooded cylinder - Long term problems?

Like drewster said you should be fine. You did the right thing pulling over. You might have done damage if it started and ran for a long period with it running the stuck injector pouring in fuel and washing the cylinder (loss of compression) and then hydro-locking (bending the rod). Your Indy look into why it did what it did?
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Old Thu, Mar-15-2018, 06:01:03 PM   #4
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Default Re: Injector flooded cylinder - Long term problems?

Should be fine.

I wonder how common a fuel injector failure is.


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Old Thu, Mar-15-2018, 06:53:06 PM   #5
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Default Re: Injector flooded cylinder - Long term problems?

Quote:
Originally Posted by bigjae1976 View Post
Should be fine.

I wonder how common a fuel injector failure is.


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Not that common, given how many threads we see about it.
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Old Fri, Mar-16-2018, 05:10:43 AM   #6
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Default Re: Injector flooded cylinder - Long term problems?

Stuck injectors aren't very common, but they do happen. I know someone with an Audi V6 that had this happen. They pulled over right away and the engine seemed to not have any problems. It's definitely not a good thing, however. I'd recommend you get all of the injectors cleaned and tested.
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Old Fri, Mar-16-2018, 08:40:11 PM   #7
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Default Re: Injector flooded cylinder - Long term problems?

Not a problem if the engine wasn't damaged.

...assuming that they have replaced the injector.
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Old Sun, Mar-18-2018, 03:01:39 AM   #8
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Default Re: Injector flooded cylinder - Long term problems?

As the OP, here is what my Indy said.... this is very uncommon. They might see one every couple of years.
I have the car back with one new injector and the others cleaned. Car runs well, and a bit smoother. BTW, I had noticed a drop off in fuel mileage for about 300 miles before it quit altogether.
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Discussing Injector flooded cylinder - Long term problems? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)