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Timing Cover Leak in Toyota/Lexus #5265287 11/12/19 05:10 PM
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Gebo Online Content OP
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I am learning that timing cover leaks are a big thing in certain Toyota and Lexus vehicles. I think it's primarily associated with 6 cylinder.

I am learning it is a "glue" issue that involves removing the engine at over 20 hours of labor ($2500 job)

Have any of you had any experience with this repair? Oil is not leaking on the ground yet but I was told to expect it to get to that point.


'98 LEX LS400 300K
'02 4Runner 245K
'05 Lex LS430 85K
'07 Lex GX470 65K

Shell Gas and Truck & Pennzoil Full Syn HM
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
Re: Timing Cover Leak in Toyota/Lexus [Re: Gebo] #5265309 11/12/19 05:37 PM
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Leo99 Online Content
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Timing cover has been seeping in my Rav4 4 cylinder for about 200,000 miles. Still doesn't leak on the ground more than a drop or two every now and then. Like once a week a drop might fall. No way I'd spend $2500 to fix it. Dealer quoted me $700 to fix it in my old Corolla. No way I'd pay $700 to fix it. It's a minor annoyance.


Without data you're just another person with an opinion. W. E. Deming

2003 Corolla 250,000 miles (RIP)
2004 Corolla 125,000 miles
2004 Rav4 392,000 miles
2015 Camry 90,000 miles
Re: Timing Cover Leak in Toyota/Lexus [Re: Gebo] #5265312 11/12/19 05:38 PM
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BigD1 Offline
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Had this repair done on a 2006 Lexus IS350 about 3 years ago or so. Engine did have to come out. Leak spot source on mine was the same as the link below describes.

http://carspecmn.com/toyota-and-lex...x350-camry-avalon-sienna-and-highlander/


1992 Toyota Pickup--AmazonBasics Conventional--10W-30--Toyota 90915YZZD1
Re: Timing Cover Leak in Toyota/Lexus [Re: Gebo] #5265322 11/12/19 05:51 PM
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CR94 Offline
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That's common on certain 4-cylinder Toyotas, too. Mine is only a seep, so far. Supposedly, these can be fixed without removing the engine, but it's tedious and difficult; dealer quotes are often over $1000, I've read.

I wonder whether it would help to re-tighten the timing-cover bolts before things get too bad.


2011 Toyota Prius now at 107K
1981 Mazda GLC (323) retired at 606K
1972 Subaru DL retired at 190K
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Re: Timing Cover Leak in Toyota/Lexus [Re: Gebo] #5265326 11/12/19 06:00 PM
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atikovi Offline
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Dumping in a quart every 500 miles, you would still have to drive it more than 400,000 miles to break even on that repair. Total the car a week after that repair and your repair money goes down the drain.

Re: Timing Cover Leak in Toyota/Lexus [Re: Leo99] #5265331 11/12/19 06:08 PM
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Gebo Online Content OP
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Originally Posted by Leo99
Timing cover has been seeping in my Rav4 4 cylinder for about 200,000 miles. Still doesn't leak on the ground more than a drop or two every now and then. Like once a week a drop might fall. No way I'd spend $2500 to fix it. Dealer quoted me $700 to fix it in my old Corolla. No way I'd pay $700 to fix it. It's a minor annoyance.



It seems several owners are just letting it go.

My son just bought this car and the original owner told us about it. We just didn't realize the potential expense. My Lexus mechanic said he would do it for $750. I guess we will have to see how bad it stains the driveway.

Just curious if anyone had tried a DIY fix.


'98 LEX LS400 300K
'02 4Runner 245K
'05 Lex LS430 85K
'07 Lex GX470 65K

Shell Gas and Truck & Pennzoil Full Syn HM
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
Re: Timing Cover Leak in Toyota/Lexus [Re: Gebo] #5265333 11/12/19 06:11 PM
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SouthDakotaDad Offline
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Originally Posted by Gebo
I am learning that timing cover leaks are a big thing in certain Toyota and Lexus vehicles. I think it's primarily associated with 6 cylinder.

I am learning it is a "glue" issue that involves removing the engine at over 20 hours of labor ($2500 job)

Have any of you had any experience with this repair? Oil is not leaking on the ground yet but I was told to expect it to get to that point.


I had a 2009 Pontiac Vibe with Toyota 1.8L that had a leaky timing cover. Cost me 1850 dollars to fix it. If you started the vehicle in under 20 degrees F it would grind so loudly it would wake the dead. Above that temp, it sounded closer to normal. There was a TSB on this unit for that problem.

It needed a special part from Japan that was $$$$. Labor was like 1200 on that as it was very difficult to repair.

Last edited by SouthDakotaDad; 11/12/19 06:14 PM.

2015 Corolla LE, 1.8, QSUD 0w-20, Fram Ultra, 55K miles
2012 Scion XB 2.4, QSUD 0w-20, Fram Ultra, 21K miles
2017 Mitsubishi Outlander Sport--Can't wait to get rid of it
Re: Timing Cover Leak in Toyota/Lexus [Re: atikovi] #5265344 11/12/19 06:21 PM
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Railrust Offline
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Originally Posted by atikovi
Dumping in a quart every 500 miles, you would still have to drive it more than 400,000 miles to break even on that repair. Total the car a week after that repair and your repair money goes down the drain.


What this^^^guy says...you'd have to be a fool to do that repair. Things seep on an engine. They do. You don't have to go and repair every little leak unless it becomes a big issue. I had an oil pan gasket that seeped a little bit since 15,000 miles on a Honda Accord...it kept seeping all the way till 289,000 miles before I traded it in.

Now if we're talking an easy repair, a cheap repair or an enormous engine damaging leak?? Ok, do it. But to remove an engine because the engine cover is weeping a little bit?? Pass. Pass big time. And no I haven't heard of timing covers being an issue on Lexus engines. Owned a Lexus for five years and drove it close to 200,000 miles.

Last edited by Railrust; 11/12/19 06:22 PM.
Re: Timing Cover Leak in Toyota/Lexus [Re: Gebo] #5265412 11/12/19 07:11 PM
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Any idea if this is an issue on the 10+ GS350 and LS460?

Re: Timing Cover Leak in Toyota/Lexus [Re: Gebo] #5265500 11/12/19 08:26 PM
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clinebarger Offline
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My wifes 2010 Corolla 2ZR-FE developed a timing cover leak while still under powertrain warranty, The dealer & Toyota USA refused to fix it. It was marking its territory by 80,000 miles. Repaired it myself because I don't tolerate oil leaks.


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: Timing Cover Leak in Toyota/Lexus [Re: Gebo] #5265551 11/12/19 09:22 PM
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toneydoc Offline
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My old Jeep doesn't seep oil, it drips it all the time. So much so that I do not park it on driveway any more
I just add oil to it and it leaks out. My wife is after me to get rid of it but the Jeep is part of family after 25.5 years
And it leaks ATF as well. Just keep a supply on hand and check every couple weeks.
The Jeep is not worth the money to fix


1994 Jeep 166k NextGen 10w30
2014 Camry 43k Castrol Magnatec 0w20
2018 Jeep Cherokee 7k Pennzoil Platinum 5w30
2014 HD Ultra 51k Mobil1 15w50
Re: Timing Cover Leak in Toyota/Lexus [Re: Gebo] #5265612 11/12/19 10:29 PM
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edyvw Offline
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Are you sure that is Toyota? That would be impossible according to BITOG'ers.

Re: Timing Cover Leak in Toyota/Lexus [Re: edyvw] #5265662 11/13/19 01:15 AM
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Originally Posted by edyvw
Are you sure that is Toyota? That would be impossible according to BITOG'ers.


And Lexus drive


'98 LEX LS400 300K
'02 4Runner 245K
'05 Lex LS430 85K
'07 Lex GX470 65K

Shell Gas and Truck & Pennzoil Full Syn HM
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
Re: Timing Cover Leak in Toyota/Lexus [Re: Gebo] #5265685 11/13/19 04:40 AM
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The 2GR-FE engine has been plagued with timing cover & cam housing leaks since it came out. I’ve reseal dozens while I worked at the dealer. Engine/trans come out with the subframe while the body is lifted off. ES & RX models both aren’t fun to do. At least I never enjoyed doing them. I worked with several techs who liked the job. The leak can & will leak onto the subframe, ruin the control arm, rack & pinion bushings on the RF side. A few I did were leaking onto the exhaust pipe from getting slung off at high speeds. Those would have visible smoke coming out at idle. I did only a few customer pay reseals. Most all were warranty or extended warranty jobs that paid less than the time it took to do for me. 7 hrs for an ES & 9 for an RX while customer pay was 14 hrs

Re: Timing Cover Leak in Toyota/Lexus [Re: Gebo] #5265715 11/13/19 06:31 AM
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BMWTurboDzl Offline
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Those are BMW prices and in some cases more than BMW prices. BMW I6 engines tend to develop this common leak at the rear passenger side of the valve cover. The I6 is actually rotated a few degrees counter clockwise so oil pools in that particular spot. ~$2k cost to repair. Thankfully being an I6 the engine doesn't require to be removed.


Last edited by BMWTurboDzl; 11/13/19 06:33 AM.

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