35is Cold Start Rough?

ronk · Post by **ronk** » Mon Aug 26, 2019 9:59 pm

sunnydays wrote: ↑Mon Aug 26, 2019 1:07 pm
john-e89 wrote: ↑Mon Aug 26, 2019 11:13 am
sunnydays wrote: ↑Mon Aug 26, 2019 7:40 am Update:

I finished the car yesterday, The car is so much better on cold start up now, super pleased! Thank you everyone for the help, much appreciated!
PM sent Sunny.
John-e89 has very generously offered to pay half of the cost of the repair. It is very much appreciated, a true example of the great members we have on the Z4 forum. Thank you once again.

Sunny

It sort of restores your faith in human nature

Now you will have a warm glow inside and are more likely to do the next man a good turn!

john-e89 · Post by **john-e89** » Mon Aug 26, 2019 10:53 pm

PM’d Sunny. Hopefully you’ll be problem free for a good while now.

marioz4 · Post by **marioz4** » Wed Dec 18, 2019 7:22 pm

ph001 wrote: ↑Tue Aug 13, 2019 6:48 am 1353 8648937-12 is the latest index 12 injector and seem reliable. They were £102 ech from a main dealer as of Jan 2018, but typically these were only used for warranty work and BMW will want to retail part number 1353 8616079-12 which is exactly the same but with a £240 price tag.

As for the MOSFETS, my company can replace those for you no probs.

Just want to say thanks a lot for this post and info re injectors for £102 oem1353 8648937. I got first qoute for 300 euros then when i asked about this one they told me 125 euros each! This is in Spain in few days i am off to Germany and will check price there. This is massive saving so thank yo so much for this info! And big thanks for original post, very usefull.

mcbutler · Post by **mcbutler** » Wed Dec 18, 2019 8:48 pm

step_change wrote: ↑Mon Aug 26, 2019 11:21 am
sunnydays wrote: ↑Mon Aug 26, 2019 7:40 am Update:

I finished the car yesterday, The car is so much better on cold start up now, super pleased! Thank you everyone for the help, much appreciated!
Well done. I'm a reasonable DIY'er but jeez, that 35is engine compartment looks mighty complex for mortals like me....... Extended warranty for me, £50 per month. and let BMW sort it....

I would not bank on that, not unless BMW warranty includes items wearing out as opposed to just failing. I have a full 3 year warranty from Warranty Direct on my 35i for £1100. Had the same on my 23i, excellent product, paid out every time, including a cam cover (blocked breathers) and a full set of lifters, flywheel, GBox strip and inspect etc etc, even covers MOT fail items far better than main stealer product.

enzed4 · Post by **enzed4** » Thu Dec 19, 2019 2:15 am

I know this thread is a few months old now, and it's good to know the OP's problem is sorted. I've noticed a rough idle when cold, and strangely if I push the accelerator down slightly and hold it steady (while trans is in park), the revs will go up but then drop down again, instead of holding steady at the higher level. Also, and I don't know if this is normal with a DCT, but if I'm sat in the car in Park on a level surface with the engine running, it intermittently 'grabs' the car and pushes it slightly forward before releasing, almost like a rocking motion. A bit strange and I've never experienced it in any other car.
Probably should start my own thread for this, but it is related to the thread subject...

step_change · Post by **step_change** » Mon Dec 23, 2019 3:39 pm

mcbutler wrote: ↑Wed Dec 18, 2019 8:48 pm
step_change wrote: ↑Mon Aug 26, 2019 11:21 am
sunnydays wrote: ↑Mon Aug 26, 2019 7:40 am Update:

I finished the car yesterday, The car is so much better on cold start up now, super pleased! Thank you everyone for the help, much appreciated!
Well done. I'm a reasonable DIY'er but jeez, that 35is engine compartment looks mighty complex for mortals like me....... Extended warranty for me, £50 per month. and let BMW sort it....
I would not bank on that, not unless BMW warranty includes items wearing out as opposed to just failing. I have a full 3 year warranty from Warranty Direct on my 35i for £1100. Had the same on my 23i, excellent product, paid out every time, including a cam cover (blocked breathers) and a full set of lifters, flywheel, GBox strip and inspect etc etc, even covers MOT fail items far better than main stealer product.

Yes it does, up to 100k miles. Other than the obvious brake pads, disks etc which are consumables. £50 per month with £100 excess. So £1800 per three years compared to £1100 for yours.

Do WD allow you to take it to a main BMW dealer? I hear rumours that WD will only pay for the actual repair that fixes the issue. If you have an intermittent, hard to diagnose problem (not uncommon with today's cars), that could get expensive whilst they eliminate various things until they get to the faulty component that WD will pay for... ???

mcbutler · Post by **mcbutler** » Mon Dec 23, 2019 6:56 pm

Yes they do, when I had one noisy lifter on my 23i they paid for the whole set. Prior to this they had already paid for a new camcover as engine breather was suspect as a cause of the noise.
No excess on the policy either.
You can add a few pounds to take it to BMW but I don’t trust them at all. They steal enough money from punters, you can imagine how they love to take advantage of warranty policies.
My local Indy is brilliant, quick book in, fast turn around all BMW techs one races BMW so great for performance and tuning tips.

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