I replaced my intake elbow trying to sort out some codes (P0172 and P0175, rich condition codes).



My old elbow was in good shape so I dont think it was.the problem. I didnt find anything worrying in the intake except that the DISA was a little bit loose. I think I'll just buy the GAS rebuild kit to head off that problem.



I also popped the vacuum manifold off to check for sludge. I moved last year and our new town gets lots of snow, and my place of work is very close to home, so it gets driven for a lot of short trips in cold weather. I did the CCV two years ago but have spotted sludge under the oil cap. Fortunately I saw very little in the vacuum hoses and manifold, so that makes me feel a little better.



Next up is the cooling system overhaul, preparing for a long trailer season this year.

Valvetronic fixed...Woohoo

DME fan fixed....Woohoo

Transmission oil leak front housing...NOT Woohoo

Alternator exploded....Grrr

$800.00 USD so far today

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What did you do to / for your E53 today??
 

Changed spark plugs to Iridium IX (Part#6441) and I can't believe the difference.

Back story: The car came with about a year old "tune-up" from previous owner which he purchased from FCP (Bosch coils and spark plugs) https://www.fcpeuro.com/products/bmw...12138647689kt4 and gave me the original parts with receipts. Never really looked at it.

I've been battling cold start misfires and poor idle for months now and never even considered spark plugs just because of benefit of the doubt. I've tried everything possible to try and cure this misfire and poor idle and even had done the VSS and asked the mechanic to check if my plugs were good which he said they seemed ok besides the oil coating due to the leaking valve stem seals.

Well having tried everything possible, it was time to see if so called "new" plugs could be the culprit and decided to open the box the previous owner gave me.

And what do ya know?!! Looks like the PO only replaced 4 out of the 8 for whatever reason!!!

Pulled the plugs and laid them in order and all the plugs that were misfiring were original BMW Bosch and the rest the new Bosch (both same part#FR7KPP332).

So put it the new Iridium IX, cleared all DTC and fired it up for a test drive and wow. What a difference!!!

Throttle response is instant, now it pulls much harder than before and idle purrs like a kitten and getting city MPG of 12 much easier than before (used to be 9-10 unless really feathered it). Didn't experience the cold start misfire as it only happens in the mornings but we'll see.

https://uploads.tapatalk-cdn.com/201...696a68e655.jpg

Congrats!
It is always interesting to discover what service was or was NOT completed on our vehicles?

Or done half ass...why would you change 4 of 8 when you bought all 8?!

Never heard of an alternator exploding..

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I wouldn't mind removing intake manifold but I hate those fuel rail clips..

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Not the whole intake manifold, just the vacuum manifold on top of the intake manifold.



It commonly fills with sludge. I found mine almost full of it when I first bought the car.

Oh okay I see what you're saying. A lot of people are deleting their CCV but I went ahead and replaced mine instead of deleting.

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Got my video uploaded on my method of removing the engine mounts on the 3.0 engines.
https://youtu.be/t4XysqHoH08


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