IS250 Carbon Build up CSP
05-09-13, 07:26 PM
#586
Driver School Candidate
Join Date: Nov 2010
Location: NC
Posts: 40
Likes: 0
Received 0 Likes
on
0 Posts
I cannot believe how long the wait is for parts now! When I got my CSP letter, I took my Lexus to the dealership on a Tuesday for them to look at it. They determined that I needed the repair and it was all finished by Friday! I had a brand new RX350 to drive while they did the work too. 
05-09-13, 10:18 PM
#587
Pole Position
iTrader: (1)
Join Date: Oct 2006
Location: CA
Posts: 286
Likes: 0
Received 0 Likes
on
0 Posts
Yup. Smooth as butter till I got the check engine light today. Haven't done anything special besides the regular scheduled maintenance. Oh and I do only use premium 91 gas from Chevron. Don't know if that made a difference though.
05-10-13, 02:09 AM
#588
An update on mine: I had some carbon build up issues even after the pistons, like i mentioned before and some others here as well did, but i realized today I haven't felt a shake in at least a couple months. Before, I'd feel it at least once a week.
I have just been using Chevron 91 only, 0w30 Full Synthetic oil and driving it a little harder more often. Not saying this is how to avoid the issue, but it's what i've been doing lately and its smooth! *knock on wood* Start up idle alone was noticeably smoother after switching to 0w30 oil.
I have just been using Chevron 91 only, 0w30 Full Synthetic oil and driving it a little harder more often. Not saying this is how to avoid the issue, but it's what i've been doing lately and its smooth! *knock on wood* Start up idle alone was noticeably smoother after switching to 0w30 oil.
05-10-13, 03:34 PM
#590
Rookie
Join Date: Jun 2009
Location: ca
Posts: 99
Likes: 0
Received 0 Likes
on
0 Posts
Is what my engine doing carbon buildup or engine misfire? I can't tell:
http://www.youtube.com/watch?v=Fdjm_...ature=youtu.be
http://www.youtube.com/watch?v=Fdjm_...ature=youtu.be
05-11-13, 12:40 AM
#592
Well it sounds like they are going to be using the same engines from the 2IS in the 3IS. If that's the case, I'm thinking they might just be using the updated pistons and hoping that fixes the problem. If they figured out a better way to combat the carbon build up issue in the 3IS, I would hope they release the same fix for the 2IS owners as well!
05-11-13, 03:31 PM
#593
Driver School Candidate
Join Date: Mar 2013
Location: CA
Posts: 31
Likes: 0
Received 0 Likes
on
0 Posts
Well it sounds like they are going to be using the same engines from the 2IS in the 3IS. If that's the case, I'm thinking they might just be using the updated pistons and hoping that fixes the problem. If they figured out a better way to combat the carbon build up issue in the 3IS, I would hope they release the same fix for the 2IS owners as well!
Just curious, since the design of the direct injection system is the reason for the carbon buildup problem, do other car makes have as big of a problem with carbon as ours?
05-11-13, 04:36 PM
#594
Did any of you guys need an alignment after getting the service done? The reason why I ask is because my car just got completed and I've been thinking if I should get it checked. Usually when the subframe is dropped to get the engine out, the suspension parts are also moved a little and might alter the alignment.
However I'm not sure of how the design is on the 2IS, perhaps it doesn't touch the front suspension at all? Maybe I won't need an alignment at all?
However I'm not sure of how the design is on the 2IS, perhaps it doesn't touch the front suspension at all? Maybe I won't need an alignment at all?
05-13-13, 05:18 AM
#595
05-13-13, 06:02 AM
#596
I noticed my alignment was off after I got my car back and I called them the next day and dropped it off again with a loaner and they did the alignment for free. ( they had checked my alignment right when my car was dropped off and showed me the paper that said it was good before I had even left with the loaner- so I don't think there was any reason for them not to cover it)
Also I did Not have any letter for the carbon buildup and no check engine light was on but when they did the test they said they found misfire codes. They fixed my car that week too, no crazy waits for parts - I think she said they already had all the parts at the dealership so they didn't have to order anything.
Also I did Not have any letter for the carbon buildup and no check engine light was on but when they did the test they said they found misfire codes. They fixed my car that week too, no crazy waits for parts - I think she said they already had all the parts at the dealership so they didn't have to order anything.
Did any of you guys need an alignment after getting the service done? The reason why I ask is because my car just got completed and I've been thinking if I should get it checked. Usually when the subframe is dropped to get the engine out, the suspension parts are also moved a little and might alter the alignment.
However I'm not sure of how the design is on the 2IS, perhaps it doesn't touch the front suspension at all? Maybe I won't need an alignment at all?
However I'm not sure of how the design is on the 2IS, perhaps it doesn't touch the front suspension at all? Maybe I won't need an alignment at all?
05-13-13, 07:00 AM
#597
There's not really a common mileage range from what i've seen. Some people have had it replaced early in the cars life, others much later or not at all. Mine was just replaced around 80k because it was making odd noises and starting to fail (under CPO warranty). I
wouldn't replace it as a preventative measure or anything though. Some people haven't had to replace it at all and are getting up there in mileage.
wouldn't replace it as a preventative measure or anything though. Some people haven't had to replace it at all and are getting up there in mileage.
So when i picked my car up i paid for the AC service thing, since my air wasnt cold - they put a dye in it to test for leaks, and i paid to have my summer tires/wheels mounted and balanced, i think it was around $250 or so and i used a 15% off coupon from my dealers website. Everything else was covered under CPO, They did the carbon build up fix, new water pump and coolant, changed the oil, filled my gas tank up, compeleted two recent recalls(wiper arm nut and inside trunk latch), and replaced a fuel injector that was damaged during dissasembly. (then later they did the alignment for free)
Even though they had my car for a week and a half (dropped off friday they kept it the following week and then i picked it up the next tuesday) i was really happy with the service, i just hope nothing else major comes up with this car. I had three Infiniti's (G35x, G35 coupe, FX35) prior to the is250 and never went to the dealer with any of them. If anything has been learned its that Next time i will stick with the bigger V6, i miss the 300HP from the infiniti.
05-14-13, 07:51 AM
#600
There are still shakes, rpm drops from a stop after the CSP and around 38,000 miles, but when I shift to neutral the rpm goes back to normal idle. I also noticed during cold start there are black smokes out from the exhaust when I step on the accelerate pedal harder, not sure if it's relate to the CSP.