That lines up with what our resident tech said and some others as well. I'm okay with the noise as long as I know the engine isn't bout to blow lol...so if it's normal, it is what it is. But this recall is, literally, a god send. It will ease a LOT of concerns I had about this motor lasting me another 4-5 years (I keep my cars 5-7 years).tlaspec wrote:I had the timing chain TSB done back in FEB and can confirm that the start up noise is still present. I have noticed through a engine code reader I have that the noise is only present in morning when the engine is in open loop operation. After the engine goes to closed loop the revs change a little bit and the noise is completely gone.
I'm guess that when the outside temps are higher the engine goes into close loop operation faster and thats the reason the noise is less noticeable in the summer.
Nevertheless, the timing chain failure stories had a lot of M56/QX56 owners worried about their cars and I'm glad to see infiniti finally owning up and resolving this issue through an official Recall. Hopefully anyone out of warranty and paid 5k for their fix under the TSB before will also be reimbursed. IMO recall should be been rolled out when the TSB was issued.
I still don't know if we're going to have to replace all the chains we've already replaced previously with this new recall. The parts list on the recall is much larger than the TSB parts list. It'll be interesting to see what comes down the pipeline in the next few weeks. And FWIW, the dealer I'm at has never had to replace a short block due to an enlarged oil jet hole. I'm not sure how common that is. You'd think if the hole was oblong or enlarged somehow, the oil jet wouldn't even stay in position. Anyways, it's good news for you V8 guys, that's fo sho!Ilya wrote:That lines up with what our resident tech said and some others as well. I'm okay with the noise as long as I know the engine isn't bout to blow lol...so if it's normal, it is what it is. But this recall is, literally, a god send. It will ease a LOT of concerns I had about this motor lasting me another 4-5 years (I keep my cars 5-7 years).tlaspec wrote:I had the timing chain TSB done back in FEB and can confirm that the start up noise is still present. I have noticed through a engine code reader I have that the noise is only present in morning when the engine is in open loop operation. After the engine goes to closed loop the revs change a little bit and the noise is completely gone.
I'm guess that when the outside temps are higher the engine goes into close loop operation faster and thats the reason the noise is less noticeable in the summer.
Nevertheless, the timing chain failure stories had a lot of M56/QX56 owners worried about their cars and I'm glad to see infiniti finally owning up and resolving this issue through an official Recall. Hopefully anyone out of warranty and paid 5k for their fix under the TSB before will also be reimbursed. IMO recall should be been rolled out when the TSB was issued.
I am picking my car up this afternoon. My service advisor said that they rebuilt the engine...2 pages worth of parts listed. Not sure if they replaced the pre-cats, (I deleted my post-cats when I had my custom exhaust done) but I will find out and report back.flip4prez wrote:Mine goes in on the 25th for the recall. Curious exactly what parts are they going to replace besides the timing belt, and oil jet
armybrat wrote:I am picking my car up this afternoon. My service advisor said that they rebuilt the engine...2 pages worth of parts listed. Not sure if they replaced the pre-cats, (I deleted my post-cats when I had my custom exhaust done) but I will find out and report back.flip4prez wrote:Mine goes in on the 25th for the recall. Curious exactly what parts are they going to replace besides the timing belt, and oil jet
I dropped my car off last Wednesday afternoon, and picked it up today. Here is the list of parts they replaced, under this recall:flip4prez wrote:How does it sound, and feel after the rebuild? And update on parts list please.
What about the startup noise? Is that still present?armybrat wrote:My engine definitely runs quieter, and idles slightly higher, probably where it's supposed to.
As far as the cats go, he said that there was no damage to mine, and that there shouldn't be any damage to the cats, but you can ask them to check since they have to disconnect the exhaust system anyway.
No difference in start up noise, as far as I can tell, at least on mine. It sounds pretty much the same as it did before I had the work done. The direct injected set up is noisy by default, due to the high pressure fuel pump.reggiebrown40 wrote:What about the startup noise? Is that still present?
And closed loop/open loop stuff mentioned before which makes total sense.armybrat wrote:No difference in start up noise, as far as I can tell, at least on mine. It sounds pretty much the same as it did before I had the work done. The direct injected set up is noisy by default, due to the high pressure fuel pump.reggiebrown40 wrote:What about the startup noise? Is that still present?
Yeah I kinda got screwed there. I just had my 60k service done about a week before the recall job. As you know, a good bit of the cost is having the fluids changed, so that was money down the drain...just wished that my transmission would've acted up sooner LOL, which is how I ended up having the timing chain work done.Debonair wrote:I'm scheduled in for June 15. I am so happy they issued this recall before I put any money toward it.
My understanding was, since my car is AWD, they had to drop the motor and transmission, and remove the drive shaft, which is why the other fluids had to be changed and why it took them 4 full days to do the job.spirod wrote:I forgot to mention that unlike armybrat, the dealer changed the engine oil and anti-freeze. No other fluids were changed.
spirod wrote:Just got my car back. It has been at the dealer since Tuesday morning. Took a little over 23 hrs to perform the timing chain recall. First impression was that the engine was quieter (still hear the DI ticking like before). After several manual downshifts, I can say that the rev-match is quieter than before (liked it before).
As far as the start-up noise is concerned, I will have to write back once it sits overnight.