e87 130i Injectors + Coding - Ist it really all lies?

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stevekoz
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e87 130i Injectors + Coding - Ist it really all lies?

Post by stevekoz » Fri Jan 19, 2018 4:27 pm

hey all,

I've been fiddling and doing bits and bobs to the e87 130i i bought in October as i'm going, really enjoying the car.

I have a few jobs to do still to sort a few niggles - mainly my light steering and vibraction issue (Lower control arms) and my missfire. Both still not sorted.

So whilst researching a number of DIY jobs i can undertake to refresh my 130i ahead of a ring trip in April. I came across a video detailing an e90 325i with a N52 engine. Pretty much the same engine as in the e87. I love DIY car videos on Youtube (what petrol head nerd doesn't?!)so gave it a watch.

He had an intermittant missfrire on cylinder 1 and by swapping the injectors around found one to be faulty. He bought a new one online for about $40 and swapped it out. However he didn't code the new injector - it simply was a remove and replace job and restart the car.

Now. Earlier in my ownership of the e87 i had spoken to a specialist trying to diagnose my misfire and we had happened upon talking about injector replacement. I was told that i would have to re-code the injectors and it would cost an arm and a leg (£100s to £1000's)

I've seen 3 videos now on same engine and none were re-coded so i'm guessing what i was told was a falsehood? I also googled it and found a post from a german BMW forum advising that the car will automatically adjust and relearn flow from a new injector so no need to code.

So - is this right? If so, it begs the questions how many people have had to pay massively inflated bills from "specialists" for re-coding on faulty injectors that seemingly the car can cope without and auto re-learns flow etc.

Or are these videos and post just "luck" rather than judgement?

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Re: e87 130i Injectors + Coding - Ist it really all lies?

Post by 0l0dom0l0 » Fri Jan 19, 2018 7:07 pm

What are the symptoms of your misfire?
2007 130i LE - BMWP Exhaust, Strut Brace, Air Filter, Short Shift kit and Handbrake.
B12 KIT with M3 LCA and TS.
Plus Cruise Control, Digital Speedo, CDV Delete, Camber Pin Mod, OEM LED Numberplate Lights, Brighter Non-dimming OEM Angel Eyes.

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Re: e87 130i Injectors + Coding - Ist it really all lies?

Post by stevekoz » Fri Jan 19, 2018 8:13 pm

Oh that. Well. Like a Burk/hiccup on idle under 1000rpm. Seems fine under load. Low mpg.

Swapped out all 6 coilpack n plugs so far. No better.

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Re: e87 130i Injectors + Coding - Ist it really all lies?

Post by tbt » Fri Jan 19, 2018 8:21 pm

What have you got to lose. Swap the injector out and see what happens.
I’d expect that it takes the car a certain amount of time to re-learn on its own and to re-code manually maybe just gets the injector flow to optimum straight away. That’s just speculation though.


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2006 E87 130i BMWP Parts-[Exhaust/Intake/Fr & Rr Brakes/Strut Brace/SS Kit]
M3 Parts-[Rear Subframe/Rear upper arms/Front Tension & LCA]
Quaife LSD, Bilstein B12 kit, Megan Racing toe arms, E46 M3 trans mounts, CDV delete

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Re: e87 130i Injectors + Coding - Ist it really all lies?

Post by marco_polo » Fri Jan 19, 2018 8:34 pm

No need to code in an N52 injector, it's low pressure port injection.
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Re: e87 130i Injectors + Coding - Ist it really all lies?

Post by 0l0dom0l0 » Fri Jan 19, 2018 9:46 pm

stevekoz wrote:
Fri Jan 19, 2018 8:13 pm
Oh that. Well. Like a Burk/hiccup on idle under 1000rpm. Seems fine under load. Low mpg.

Swapped out all 6 coilpack n plugs so far. No better.
Have you checked your eccentric shaft sensor for oil?
2007 130i LE - BMWP Exhaust, Strut Brace, Air Filter, Short Shift kit and Handbrake.
B12 KIT with M3 LCA and TS.
Plus Cruise Control, Digital Speedo, CDV Delete, Camber Pin Mod, OEM LED Numberplate Lights, Brighter Non-dimming OEM Angel Eyes.

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Re: e87 130i Injectors + Coding - Ist it really all lies?

Post by stevekoz » Fri Jan 19, 2018 10:32 pm

0l0dom0l0 wrote:
Fri Jan 19, 2018 9:46 pm
stevekoz wrote:
Fri Jan 19, 2018 8:13 pm
Oh that. Well. Like a Burk/hiccup on idle under 1000rpm. Seems fine under load. Low mpg.

Swapped out all 6 coilpack n plugs so far. No better.
Have you checked your eccentric shaft sensor for oil?
No that is a new one on me.

What may I ask is the eccentric shaft sensor and what does it do?

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Re: e87 130i Injectors + Coding - Ist it really all lies?

Post by stevekoz » Fri Jan 19, 2018 10:34 pm

marco_polo wrote:
Fri Jan 19, 2018 8:34 pm
No need to code in an N52 injector, it's low pressure port injection.
Good job I didn't agree a local reputable bmw specialist a lot of money to do it.

May get some and swap them out then. Can't hurt at 120k and no record of a swap. They seem fine so cam keep them and swap back if goes wrong.

Cheers 👍

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Re: e87 130i Injectors + Coding - Ist it really all lies?

Post by 0l0dom0l0 » Fri Jan 19, 2018 10:36 pm

stevekoz wrote:
Fri Jan 19, 2018 10:34 pm
marco_polo wrote:
Fri Jan 19, 2018 8:34 pm
No need to code in an N52 injector, it's low pressure port injection.
Good job I didn't agree a local reputable bmw specialist a lot of money to do it.

May get some and swap them out then. Can't hurt at 120k and no record of a swap. They seem fine so cam keep them and swap back if goes wrong.

Cheers 👍
I'd be very suprised if it needs new injectors.

Check your eccentric shaft sensor for oil first. Any sign of oil, needs replacing.

Google it, on my phone atm can't find you details very easily but should be lots about on the net, what to look for, how to change it etc.
2007 130i LE - BMWP Exhaust, Strut Brace, Air Filter, Short Shift kit and Handbrake.
B12 KIT with M3 LCA and TS.
Plus Cruise Control, Digital Speedo, CDV Delete, Camber Pin Mod, OEM LED Numberplate Lights, Brighter Non-dimming OEM Angel Eyes.

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Re: e87 130i Injectors + Coding - Ist it really all lies?

Post by stevekoz » Fri Jan 19, 2018 10:48 pm

Just did a google.

Hmmm looks a difficult diy or expensive dealer fix.

Symptoms partially relate but in 4 months the car hasn't thrown one CEL or code. Nor does it surge.

The hiccup is static in the engine, the revs momentarily hiccup down and then its fine again. Like a cylinder misfire. Bmw failed to spot or log it.

I guess if it ia that for the age and money is it worth just leaving it and living with the slightly lower mpg and the hiccup? Driving normally there's no real degradation in performance so its more just an annoyance than a problem. I can live with "quirks" or can I??

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Re: e87 130i Injectors + Coding - Ist it really all lies?

Post by 0l0dom0l0 » Sat Jan 20, 2018 8:12 am

stevekoz wrote:
Fri Jan 19, 2018 10:48 pm
Just did a google.

Hmmm looks a difficult diy or expensive dealer fix.

Symptoms partially relate but in 4 months the car hasn't thrown one CEL or code. Nor does it surge.

The hiccup is static in the engine, the revs momentarily hiccup down and then its fine again. Like a cylinder misfire. Bmw failed to spot or log it.

I guess if it ia that for the age and money is it worth just leaving it and living with the slightly lower mpg and the hiccup? Driving normally there's no real degradation in performance so its more just an annoyance than a problem. I can live with "quirks" or can I??
It's not too bad from what I've seen, just time consuming. I've got to get my rocker cover off anyway to change my rocker cover gasket so will strongly be considering doing this at the same time. However i have no oil in my plug.

The first thing to do is to check for oil in the plug, which is a 15 min task. Engine cover off. Plug out and have a look.

No codes is a good indication it's the eccentric shaft sensor and problems around idle seems to be linked with that too.

It could also be vanos solenoids.

I'm chasing a sub 1500 rpm grumble and have been since I bought the car, plus a lumpy hot restart.

No codes for me either.

Do you suffer wo th either of the above?
2007 130i LE - BMWP Exhaust, Strut Brace, Air Filter, Short Shift kit and Handbrake.
B12 KIT with M3 LCA and TS.
Plus Cruise Control, Digital Speedo, CDV Delete, Camber Pin Mod, OEM LED Numberplate Lights, Brighter Non-dimming OEM Angel Eyes.

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Re: e87 130i Injectors + Coding - Ist it really all lies?

Post by supercati » Sat Jan 20, 2018 11:01 am

+1 to @0l0dom0l0, eccentric shaft sensor is a must watch on N52 engines.

I want to add some info, just in case it helps or its related: rpm oscilation on idle during 5 first seconds after starting the car:
https://www.1erforum.de/threads/ruckeln ... rt.211760/ but no one seems to have the answer.

And also: DO NOT oil the K&N / BMWP air filter, it just will mess with the MAF sensor and cause strange things.
130i E81 2007 LHD - Sparkling Graphite Metallic / Boston Terra - CDV Delete - 135i ESD with resonator delete - LED Blacklines - RIP :(
130i E81 2008 LHD - LSE / Boston Terra - Complete HiFi Retrofit - CDV Delete - LED Blacklines - BMWP SSK -

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Re: e87 130i Injectors + Coding - Ist it really all lies?

Post by stevekoz » Sat Jan 20, 2018 11:30 am

0l0dom0l0 wrote:
Sat Jan 20, 2018 8:12 am
stevekoz wrote:
Fri Jan 19, 2018 10:48 pm
Just did a google.

Hmmm looks a difficult diy or expensive dealer fix.

Symptoms partially relate but in 4 months the car hasn't thrown one CEL or code. Nor does it surge.

The hiccup is static in the engine, the revs momentarily hiccup down and then its fine again. Like a cylinder misfire. Bmw failed to spot or log it.

I guess if it ia that for the age and money is it worth just leaving it and living with the slightly lower mpg and the hiccup? Driving normally there's no real degradation in performance so its more just an annoyance than a problem. I can live with "quirks" or can I??
It's not too bad from what I've seen, just time consuming. I've got to get my rocker cover off anyway to change my rocker cover gasket so will strongly be considering doing this at the same time. However i have no oil in my plug.

The first thing to do is to check for oil in the plug, which is a 15 min task. Engine cover off. Plug out and have a look.

No codes is a good indication it's the eccentric shaft sensor and problems around idle seems to be linked with that too.

It could also be vanos solenoids.

I'm chasing a sub 1500 rpm grumble and have been since I bought the car, plus a lumpy hot restart.

No codes for me either.

Do you suffer wo th either of the above?
The Vanos solenoids was next on my list to check/remove/clean and reinstall.

In terms of the symptoms, no rough hot start and the hiccup is only around 650-750rpm - where my car idles.

No loss of power that i can feel - but then that may be because i am just not aware of it feeling any different.

I guess i need to take a video of it. But if you imagine sitting in the car and watching the rev counter. The needle will hiccup (up / down )from say 750 to 650 and then stay static for a while then do it again. Like if you were counting the cylinders firing 1 thorugh 6 in succession it would hiccup like this. 1. 2. 3. 4 hiccup. 5. 6. and repeat.

I'll get a video up later today hopefully.

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Re: e87 130i Injectors + Coding - Ist it really all lies?

Post by 0l0dom0l0 » Sat Jan 20, 2018 11:48 am

stevekoz wrote:
Sat Jan 20, 2018 11:30 am
0l0dom0l0 wrote:
Sat Jan 20, 2018 8:12 am
stevekoz wrote:
Fri Jan 19, 2018 10:48 pm
Just did a google.

Hmmm looks a difficult diy or expensive dealer fix.

Symptoms partially relate but in 4 months the car hasn't thrown one CEL or code. Nor does it surge.

The hiccup is static in the engine, the revs momentarily hiccup down and then its fine again. Like a cylinder misfire. Bmw failed to spot or log it.

I guess if it ia that for the age and money is it worth just leaving it and living with the slightly lower mpg and the hiccup? Driving normally there's no real degradation in performance so its more just an annoyance than a problem. I can live with "quirks" or can I??
It's not too bad from what I've seen, just time consuming. I've got to get my rocker cover off anyway to change my rocker cover gasket so will strongly be considering doing this at the same time. However i have no oil in my plug.

The first thing to do is to check for oil in the plug, which is a 15 min task. Engine cover off. Plug out and have a look.

No codes is a good indication it's the eccentric shaft sensor and problems around idle seems to be linked with that too.

It could also be vanos solenoids.

I'm chasing a sub 1500 rpm grumble and have been since I bought the car, plus a lumpy hot restart.

No codes for me either.

Do you suffer wo th either of the above?
The Vanos solenoids was next on my list to check/remove/clean and reinstall.

In terms of the symptoms, no rough hot start and the hiccup is only around 650-750rpm - where my car idles.

No loss of power that i can feel - but then that may be because i am just not aware of it feeling any different.

I guess i need to take a video of it. But if you imagine sitting in the car and watching the rev counter. The needle will hiccup (up / down )from say 750 to 650 and then stay static for a while then do it again. Like if you were counting the cylinders firing 1 thorugh 6 in succession it would hiccup like this. 1. 2. 3. 4 hiccup. 5. 6. and repeat.

I'll get a video up later today hopefully.
Classic eccentric shaft sensor imo.
supercati wrote:
Sat Jan 20, 2018 11:01 am
+1 to @0l0dom0l0, eccentric shaft sensor is a must watch on N52 engines.

I want to add some info, just in case it helps or its related: rpm oscilation on idle during 5 first seconds after starting the car:
https://www.1erforum.de/threads/ruckeln ... rt.211760/ but no one seems to have the answer.

And also: DO NOT oil the K&N / BMWP air filter, it just will mess with the MAF sensor and cause strange things.
I wish I could get to the bottom of it. Will have a look through that thread.

Do you have it also? What about sub 1500 rpm do you have any 'misfire' symptoms there also?
2007 130i LE - BMWP Exhaust, Strut Brace, Air Filter, Short Shift kit and Handbrake.
B12 KIT with M3 LCA and TS.
Plus Cruise Control, Digital Speedo, CDV Delete, Camber Pin Mod, OEM LED Numberplate Lights, Brighter Non-dimming OEM Angel Eyes.

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Re: e87 130i Injectors + Coding - Ist it really all lies?

Post by supercati » Sat Jan 20, 2018 12:21 pm

0l0dom0l0 wrote:
Sat Jan 20, 2018 11:48 am

I wish I could get to the bottom of it. Will have a look through that thread.

Do you have it also? What about sub 1500 rpm do you have any 'misfire' symptoms there also?
Yes, I have this rough idle during the first 5 seconds after start. My first 130i had this, and my current 130i LSE has this also. And according to the german forum seems to be more people affected. And I'm sure there's people who have this but didn't realise about.

My first 130i had also eccentric shaft sensor with oil/damaged, but my only symptoms were that car was stalling when AC was on :confused1:.

I couldn't appreciate any other symptom on my current LSE, honestly. I don't usually drive low rpm; when engine is cold I drive 1750-2750 rpm, not below that rpm (it's not good). And when engine is hot I don't tend either to drive on low rpm (I'd say 2000-3000rpm normal driving).
I will try to focus this next week on this and try to appreciate if there's something else wrong.
130i E81 2007 LHD - Sparkling Graphite Metallic / Boston Terra - CDV Delete - 135i ESD with resonator delete - LED Blacklines - RIP :(
130i E81 2008 LHD - LSE / Boston Terra - Complete HiFi Retrofit - CDV Delete - LED Blacklines - BMWP SSK -

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