Poorly 35i (Now Fixed)(sort of)

mr wilks said:
buzyg said:
Some scary sums mentioned. Think I'll be sticking with the MR a good while.
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Yea cause the S54 Zs don't melt wallets do they :oops: :D bearing shells ? cams + followers ? Ins2 ? discs + pads ? :roll:
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Are my Rose tinted specs on view again. :lol:

Running costs I'm happy to live with. You can usually see those coming and budget accordingly. It's things that break I don't like. Touch wood, not much has broke on mine in 50k + miles of my ownership. Radiator fan £400 and sat nav flip screen. That's it. The rest just works. :D 8) :thumbsup:
 
Maniac said:
Let’s face it... none of these cars are a sensible choice.

She’s back with me and better than ever, that’s what matters to me.

Now just to deal with that annoying RTA :(
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Indeed that is what matters. :D :thumbsup:
 
R.E92 said:
You should notice a difference with the new injectors installed. My MPG increased and engine was much smoother.
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I’ve not noticed any difference there. It does feel different to drive. Mushy and almost hesitant at low speed and revs, perhaps I just got used to it being a bit lively and jerky due to the fault.

Still goes like a bat out of hell so that’s reassuring and idle is very smooth albeit typically N54 not perfect idle.

So yeah good to have it back, just to MERC to sort out now (someone drove into it, let’s not go there, spent the last two weeks with my head in my hands).
 
Oh there is one other thing I’ve noted since the new injectors went in.

It starts on the first turn.


Used to take 2/3 turns.
 
Maniac said:
Oh there is one other thing I’ve noted since the new injectors went in.

It starts on the first turn.


Used to take 2/3 turns.
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god old injectors! what was the age and mileage by the way?
 
So I’m just not sure what’s changed...

But after repeated cold start hesitation changing from D2 to D3 and a one off recent very alarming gear downshift resulting in a lurch forward (like it revved up to downshift without releasing the clutch) in traffic I’m going to have to talk with the dealership... she’s not the same.
 
Only an issue since the injector replacement.

No idea if they check dct as part of normal servicing.

Dealer chat in order...
 
Maniac said:
Only an issue since the injector replacement.

No idea if they check dct as part of normal servicing.

Dealer chat in order...
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So they put in new injectors and thats caused the gearbox to act funny ?
 
A common mistake that is made during injector install is that the decouplers aren't installed.

They missed mine out when they first did the injector install and I had misfires as a result. Poor fuel delivery will explain your problems, especially the lurching forward.

Luckily it's an easy 20min job to check for yourself. Take the engine cover off and take a peek.

Part #10 on this drawing:
http://www.realoem.com/bmw/enUS/showparts?id=LM72-EUR-03-2009-E89-BMW-Z4_35i&diagId=13_1182

This photo shows where they should sit:
attachment.jpg

It's hard to determine if they are present by just looking if you aren't familiar with the engine bay. I would read through a few injector install DIY articles and try get a sense for how things should be installed.
Also check that the injectors don't move around. There should also be a bracket along the top of the injector that holds them in place.

Take a load of photos and upload them if you are uncertain. Try get right in close to where the injector disappears into the block.

Dealerships are difficult to navigate with these issues since the front-end staff will have no idea what a decoupler is and you rarely get a chance to talk to the mechanics. They took ages to admit fault with my car even after me telling them exactly where they fucked up.
 
Thanks for the heads up. Would these seals/decouplers cause the hesitation I’m seeing just when cold (that’s what I see).
 
Maniac said:
Thanks for the heads up. Would these seals/decouplers cause the hesitation I’m seeing just when cold (that’s what I see).
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I had all kinds of issues when mine were missing.

The car would run great for a few days then I'd notice strange things like hesitation and stumbling from then engine while just cruising normally. I could drive 100 miles without an issue, then i'd get a misfire and limp mode then have to restart the car.

One time the car threw some strange error on the dash and just wouldn't come to a stop, I had to push the ignition button while it was fighting against the brakes which put it into park and slammed the car to a halt. After restarting it drove fine again.

I'm not he only person to get screwed by BMW when fitting injectors. The other forums are full of stories about missing injector decouplers.
I've had good and bad experiences with dealerships and just learnt over the years to double-check their work when possible. When they replaced my adaptive shocks they left the spring compressor tool in the suspension and denied it right up until I sent them a video of it. They then admitted they had one missing from the workshop :rofl:
 
Hi Maniac,

Happy Christmas to all.

Did you resolve your last issue?

Just had the rough idle, miss fire under load and up-hill, happen together with the yellow engine symbol on the dash, sometimes flashing, sometimes constant and then off - seems to go away when coasting and downhill. Happened yesterday, Christmas day, so had to take a cab to the family reunion.

robbee
 
robbee said:
Hi Maniac,

Happy Christmas to all.

Did you resolve your last issue?

Just had the rough idle, miss fire under load and up-hill, happen together with the yellow engine symbol on the dash, sometimes flashing, sometimes constant and then off - seems to go away when coasting and downhill. Happened yesterday, Christmas day, so had to take a cab to the family reunion.

robbee
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Assuming you also have a 35, then likely injectors.

Mines still poor on power when cold, it’s booked back into dealers to check injector registration/install and update all cars software early Jan.
 
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