SUL4589

Lucas Pure Synthetic, had my shop take 2 quarters of oil out and added 2 quarts of Lucas. Started this morning and sound is down 90%. The video is what I had but the video is louder but the same

wakebord99

Perfect, thanks man. I just bought the same and will report back to everyone to see if my results match.

I'm curious if you have any hesitation, almost like the car wants to downshift but doesnt, under partial throttle (30-60 MPH)... which after researching what a cam phaser does sounds like it would contribute to the same issues (VVT). I've been slowly replacing parts looking for a cause to this issue that won't require a dealer visit.

I'll also share this video about replacing the VVT sensor on the previous gen cars.. looks like a 10 minute job at a cost of less than $200

SUL4589

No hesitation issues. Other than the VVT been fine.

wakebord99

For those interested in buying the replacement "Oil Control Valve" here are the part numbers and diagrams.
http://www.lexussouthatlantaparts.co...53300S010.html

They have a knock off replacement part for $25 from Amazon.. worth the risk??

wakebord99

So i purchased the Lucas oil additive and it does make a slight difference, but i'm concerned about the longer term effects of having such a heavy oil in our engines.

I ended up purchasing the Oil Control Valve listed above. I'm going to try and replace one bank at a time to see if i can eliminate the issue.

Does anyone know if our cars suffer from the following:
- Carbon build up on the valves
- Tensioner loosens on the timing chain
- Water pump/Alternator failures

wakebord99

So an update for those who are interested...

I have identified that the sound is definitely coming from the driver's side of the engine. I replaced the oil control valve with the $25 unit from Amazon. Made no difference in the sound. I've also replaced all the spark plugs and same.. no difference.

Here is an updated video with the plastic engine cover off

Doublebase

That light tick noise sounds like valve train/lifter tick. I forget the exact overhead cam setup, but I think it sounds like a cam follower is not filling up with oil. I'd continue to try the usual additives like Lucas, mystery oil, etc. See if that frees it up. I could be wrong, but man that sound is classic valve train to me.

3GSShoe

Has this been resolved? I would tell your mechanic to remove the VVT solenoid and blast the phaser cam with some compress air. It's an old trick that can help free them up.

BADGS460

has this been resolved did the mystery oil work? I have the same problem with my 2008 Lexus GS460 130k
I don’t know what to do.

I replaced oil 5w-30 royal purple, I’m adding mystery oil today. Replaced spark plugs, they look used but not bunt or covered in oil.
I have the same sound, it’s like a rock or metal piece rattling around. Solid 5 mins until engine is warm. The car runs rich but I believe that to be another issue.
I love the car, don’t wanna get rid of it, but I can’t trust it what do I do?
supposed to go to a funeral that’s a 5 hour drive each way, next weekend. I’m hesitant to take the Lexi because of these issues.

Mythicalni

I have this exact issue, took me months to find it. There is a TSB on this issue for Europe but not here in North America for some odd reason. That clacking sound is the Timing chain tensioner. I took my 09 LS460 to multiple Indy Toyota lexus shops none of them were able replicate the sound. I found this TSB on the ISF forum

https://www.clublexus.com/forums/att...0031l-0516.pdf

1supra

I’ve seen a few lexus v8s doing this. Did the fix end up being the timing chain tensioner ? Is it oil driven tensioner ? Is the why marvel helps them work better

Mythicalni

Nope, I have not replaced the tensioner yet. I have the part, also have attempted this job. If not for the fan wire without breaking the tab that holds it away from the moving parts.

I have not found a good indy shop here in the Nashville area and have been contemplating taking it to the dealer. Lexuspro here charges $115/hr for labor.
Dealer charges what like $130/hr?

Also, I trust the dealer enough. More than I trust some of these indys I've gone too. Dealer has done all the service on the car, except oil and tires. So far they have done my Valley Plate, Fuel pump gaskets, Front Wheel Bearings, Radiator, and the sticky interior covered by the ZLZ program, If I remember correctly. It's been a few years.

Another reason of finding a good indy is getting THE SUSPENSION DONE RIGHT! THE FIRST TIME! At the current indy rates I rather trust the old heads at the dealer at this point.

1supra

let me know if that fixes your issue when you get around to it. My dealer here is terrible they mess up everything in va beach. Had them do the valve fix recall and car has had a vac leak since. Runs rich and lights on dash

AtlDan

I know this is a necro-bump from hell, but I know someone with this exact problem and we can't figure it out. Wondering if anyone has solved this?

Mythicalni

I believe it to be the timing chain tensioner. The indy shop i use to take my 09 LS disagreed with me and wanted to put another motor in it. Never got around to replacing it, I just bought another car, because I got tired of f***In with the dealer and indy shops