Engine cranking/startup noise (merged threads)
04-20-12, 06:09 PM
#871
IS 250 Weird noise when start the engine?? Advice needed!!
Hi everyone. I need your advice asap.
Since we have very warm weather something bad happened to engine in my car..?
When I start it sounds very weird for 1sec or two after that engine runs normally without any weird noises. It doesn't sound bad at every time I start it, it's like every 10 or 15 starts.
Car has 49500 miles right now
1500 miles (1,5 months) ago I switched oil from regular to synthetic. I am not sure I am not killing the engine by what exactly I did...? Many people said not to worry about switching from regular to synthetic but I was kind a suspicious to not to do so but finally I switched to synthetic.
The oil I put is Mobil1 5w30 I have to change once again soon cause is really dark brown after 1,500 miles only - wth??
My question is any idea that noise could be caused by wrong oil? Should I keep synthetic or go back to regular??
Thank you in advance for reply.
Since we have very warm weather something bad happened to engine in my car..?
When I start it sounds very weird for 1sec or two after that engine runs normally without any weird noises. It doesn't sound bad at every time I start it, it's like every 10 or 15 starts.
Car has 49500 miles right now
1500 miles (1,5 months) ago I switched oil from regular to synthetic. I am not sure I am not killing the engine by what exactly I did...? Many people said not to worry about switching from regular to synthetic but I was kind a suspicious to not to do so but finally I switched to synthetic.
The oil I put is Mobil1 5w30 I have to change once again soon cause is really dark brown after 1,500 miles only - wth??
My question is any idea that noise could be caused by wrong oil? Should I keep synthetic or go back to regular??
Thank you in advance for reply.
Last edited by boss22; 04-20-12 at 06:14 PM.
04-20-12, 07:26 PM
#874
damnn is it serious? I red almost whole thread and still can't figure what is TSB?? And what parts have to be replaced?
Or maybe top the engine oil only? Since my last change ( I've done it by myself I put only 6 quarts instead of 6.7? Lets change the oil first then see.
Or maybe top the engine oil only? Since my last change ( I've done it by myself I put only 6 quarts instead of 6.7? Lets change the oil first then see.
04-20-12, 08:41 PM
#875
TSB = Technical Service Bulletin also known as
TSIB = Technical Service Information Bulletin
It's not serious but it's more of a something that should be fixed. Bascailly the cam gear has a bit too much freeplay even thou it is built within tolerences. The fix is that the new cam gears are built with tighter tolerences to address the problem.
The symptom would manefest itself during random start up as a rattle as the oil preasure is building up as it occurs as the cam gear is getting lubricated. Similarly, it would also do it on engine shut down (mine did it randomly) as the oil preasure is dropping as the cam gear is losing lubrication.
The parts which need to be replaced is below: from my invoice.
TSIB = Technical Service Information Bulletin
It's not serious but it's more of a something that should be fixed. Bascailly the cam gear has a bit too much freeplay even thou it is built within tolerences. The fix is that the new cam gears are built with tighter tolerences to address the problem.
The symptom would manefest itself during random start up as a rattle as the oil preasure is building up as it occurs as the cam gear is getting lubricated. Similarly, it would also do it on engine shut down (mine did it randomly) as the oil preasure is dropping as the cam gear is losing lubrication.
The parts which need to be replaced is below: from my invoice.
04-20-12, 09:13 PM
#876
Thank you sango. Thank you guys.
You think it might be caused I changed the oil from regular to synthetic? Synthetic oil in my opinion its kinda thinner than regular even if they have same weight 5w30 i Think I should never go to synthetic and keep regular but it's too late...
I dont think that going back to regular oil right now changes anything...??
My car is out of warranty, how much you think this going to cost me out of warranty?
You think it might be caused I changed the oil from regular to synthetic? Synthetic oil in my opinion its kinda thinner than regular even if they have same weight 5w30 i Think I should never go to synthetic and keep regular but it's too late...
I dont think that going back to regular oil right now changes anything...??
My car is out of warranty, how much you think this going to cost me out of warranty?
04-21-12, 01:06 AM
#877
Hmm I'm not not how much it would cost out of warranty... You may want to talk with the dealership to see if they can have it done as a warranty repair.
As far as the oils go, keep the synthetic. The problem is with the cam gear so it would not make much of a difference.
For me, I use 0W-30 on the 07 IS.
As far as the oils go, keep the synthetic. The problem is with the cam gear so it would not make much of a difference.
For me, I use 0W-30 on the 07 IS.
04-21-12, 05:23 AM
#878
How can your car be out of warranty? My car is a 2006 and I bought it used August of 2011 with 60k miles and called Lexus @68k miles when I heard the same noise and the service adviser said I was still under factory 70k powertrain warranty.
I didn't buy any extra warranty's... They fixed it for free. If its out of warranty, it will be expensive. My service adviser told me the cam gears alone cost lexus $1100, Not counting its several hours of labor.
I didn't buy any extra warranty's... They fixed it for free. If its out of warranty, it will be expensive. My service adviser told me the cam gears alone cost lexus $1100, Not counting its several hours of labor.
04-21-12, 06:00 AM
#879
My car is salvaged. Bought from auction damaged. No warranty
Ok what anything bad going to happened when I going to drive like that?
04-21-12, 08:44 AM
#880
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Wanted to get your opinion. My car has not made any of the noise mentioned. But I was thinking if I should take the car and get the cams replace anyways? What do you guys think? Thanks.
04-21-12, 09:06 AM
#881
^
You can try, but the dealership may not want to do it if they are unable to reproduce it if you get what I mean. Try having a word with them and see what they say; maybe just say your car does it at random and insist on the repair.
You can try, but the dealership may not want to do it if they are unable to reproduce it if you get what I mean. Try having a word with them and see what they say; maybe just say your car does it at random and insist on the repair.
Last edited by Sango; 04-21-12 at 10:15 AM.
04-21-12, 09:50 AM
#882
They want me to leave the car overnight and see what they coud find. They charge $120 just for check up what is wrong. I bet they will not find anything cause this is very rarely to spot. So I am not going to waste $120. I've checked the oil level this morning and was between min and max so I topped up the oil and started engine and nothing. Maybe this was caused by the low oil level only?? Anyways today i am going change the oil to Castrol Edge 5W30 full synthetic (right now I have Mobil1 5w30 synth) then I will see how this going to work. Castrol never let me down in any car...
04-21-12, 04:05 PM
#884
You think it might be caused by switching frm regular to synthetic? On regular oil (2 moths ago) I had nothing like that ...
I am afraid that synthetic oil made it go bad...