oil leak on LS460 L
04-26-16, 11:10 AM
#2
Pole Position
Hello, welcome to the forum. Can you provide some details about your vehicle? Have you owned the vehicle for a while and only noticed this problem recently (how many miles ago?)? Who told you it could be the fuel pump? A repair shop? Are you losing a lot of oil? Was the vehicle serviced recently (oil change etc?). Maybe it is something as simple as a improperly closed drain plug. Do you see smoke on start up or while driving? It could be a head gasket. Good luck and hope you get this fixed soon.
04-26-16, 11:24 AM
#3
Driver School Candidate
Thread Starter
I've recently purchased car less than 300 miles ago. Vehicle has aprroxitmately 58,000 miles. I have not removed any inspection covers yet to see if it's drain plug leak. Lexus dealership suggested oil leak may be coming from fuel pump. 
04-26-16, 11:55 AM
#4
Pole Position
So they are not sure it is the fuel pump? What is the estimated cost? I would get a second opinion from another shop (Toyota/Lexus).
04-26-16, 12:28 PM
#5
Lexus Test Driver
Well, it could be something simple as a missing o ring on your oil filter. I've seen friend's cars with missing o rings on their filters after taking their cars to jiffy lube or some other God-awful oil change place. They leaked oil and thought the worst, but after taking it to the dealer, they said it was the filter o ring and nothing more.
You buy the car from the dealer or third-party? If it's a third-party or a non-Lexus dealer, who knows who changed your oil.
Unless you can inspect it yourself, just have the dealer look at it. It could be something simple. Even if it isn't, assuming you purchased it from the dealer, they may fix for free if you complain considering you just got it.
If it's a third-party, well, let this be a lesson to thoroughly inspect prior to purchase.
You buy the car from the dealer or third-party? If it's a third-party or a non-Lexus dealer, who knows who changed your oil.
Unless you can inspect it yourself, just have the dealer look at it. It could be something simple. Even if it isn't, assuming you purchased it from the dealer, they may fix for free if you complain considering you just got it.
If it's a third-party, well, let this be a lesson to thoroughly inspect prior to purchase.
04-26-16, 01:31 PM
#6
There are 2 fuel pumps, one on each rocker cover. You'd likely have a bunch of smoke and burning oil smell if the o-rings sealing the pumps to the rocker covers were leaking, because the oil would drip right down onto the exhaust manifold.
04-27-16, 01:05 AM
#7
Either the fuel pump O-rings or the valve cover gaskets.
I haven't seen anyone here changing valve cover gaskets due to leaks
I also have a very slow leak on passenger side, either from the fuel pump gasket or valve cover gasket. Sometimes have burning oil smell after longer drivers, and a little bit of oil collects in the underbody panels after many months
I haven't seen anyone here changing valve cover gaskets due to leaks
I also have a very slow leak on passenger side, either from the fuel pump gasket or valve cover gasket. Sometimes have burning oil smell after longer drivers, and a little bit of oil collects in the underbody panels after many months
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04-27-16, 01:58 AM
#8
Pole Position
If the OP is noticing a pool of oil under his car, then it shouldn't be fuel. As everyone knows fuel smells and it evaporates rather quickly, so the smell would be a dead give away. Plus if it was the high pressure fuel area, I'd venture to guess that there would have been a fire.
It's strange that a dealership would tell the guy it's probably fuel when it doesn't sound like they've even taken a look at it. I wonder if they're playing it safe because there is a fuel gasket recall that calls for an o-ring to be replaced on the fuel rail. This recall came out this time last year, it involves removing the intake manifold, but still even if it was that we'd most likely be talking about an engine fire.
I'd be willing to guess that it's something related to a previous repair...either an oil change gone bad (filter housing cracked, missing gasket, loose drain plug, spilt oil).
If it's a timing cover or valve cover gaskets it would be something rare with this vehicle. I've only heard of one other member that had to replace valve cover gaskets on these cars,mane that car had 260,000 miles (former limo). I imagine as the vehicle ages it's only a matter of time before we start hearing of leaks, but right now I'd say these engines are pretty damn tight...it's one of the strong suites of the car, that and a lack of check engine lights.
It's strange that a dealership would tell the guy it's probably fuel when it doesn't sound like they've even taken a look at it. I wonder if they're playing it safe because there is a fuel gasket recall that calls for an o-ring to be replaced on the fuel rail. This recall came out this time last year, it involves removing the intake manifold, but still even if it was that we'd most likely be talking about an engine fire.
I'd be willing to guess that it's something related to a previous repair...either an oil change gone bad (filter housing cracked, missing gasket, loose drain plug, spilt oil).
If it's a timing cover or valve cover gaskets it would be something rare with this vehicle. I've only heard of one other member that had to replace valve cover gaskets on these cars,mane that car had 260,000 miles (former limo). I imagine as the vehicle ages it's only a matter of time before we start hearing of leaks, but right now I'd say these engines are pretty damn tight...it's one of the strong suites of the car, that and a lack of check engine lights.
04-27-16, 08:11 AM
#9
Lexus Fanatic
If the OP is noticing a pool of oil under his car, then it shouldn't be fuel. As everyone knows fuel smells and it evaporates rather quickly, so the smell would be a dead give away. Plus if it was the high pressure fuel area, I'd venture to guess that there would have been a fire.
It's strange that a dealership would tell the guy it's probably fuel when it doesn't sound like they've even taken a look at it. I wonder if they're playing it safe because there is a fuel gasket recall that calls for an o-ring to be replaced on the fuel rail. This recall came out this time last year, it involves removing the intake manifold, but still even if it was that we'd most likely be talking about an engine fire.
I'd be willing to guess that it's something related to a previous repair...either an oil change gone bad (filter housing cracked, missing gasket, loose drain plug, spilt oil).
If it's a timing cover or valve cover gaskets it would be something rare with this vehicle. I've only heard of one other member that had to replace valve cover gaskets on these cars,mane that car had 260,000 miles (former limo). I imagine as the vehicle ages it's only a matter of time before we start hearing of leaks, but right now I'd say these engines are pretty damn tight...it's one of the strong suites of the car, that and a lack of check engine lights.
It's strange that a dealership would tell the guy it's probably fuel when it doesn't sound like they've even taken a look at it. I wonder if they're playing it safe because there is a fuel gasket recall that calls for an o-ring to be replaced on the fuel rail. This recall came out this time last year, it involves removing the intake manifold, but still even if it was that we'd most likely be talking about an engine fire.
I'd be willing to guess that it's something related to a previous repair...either an oil change gone bad (filter housing cracked, missing gasket, loose drain plug, spilt oil).
If it's a timing cover or valve cover gaskets it would be something rare with this vehicle. I've only heard of one other member that had to replace valve cover gaskets on these cars,mane that car had 260,000 miles (former limo). I imagine as the vehicle ages it's only a matter of time before we start hearing of leaks, but right now I'd say these engines are pretty damn tight...it's one of the strong suites of the car, that and a lack of check engine lights.
I think the suggestion of the fuel pump leaking is valid. I believe the fuel pumps are mounted on the valve covers and when the gaskets connecting them to the valve covers fail, they leak oil not fuel. At least that's how I see it.
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04-27-16, 09:28 AM
#10
Driver School Candidate
Thread Starter
okay i finally found this leak as shown in the attached pictures. I need to replace clamp and possibly hose too. I didn't know the LS460 had a oil cooler.
Now i'm onto working my next problem.
Need replacement inner and outer Front CV boots. Can anyone recommend a good source for Lexus parts?
Now i'm onto working my next problem.
Need replacement inner and outer Front CV boots. Can anyone recommend a good source for Lexus parts?
04-27-16, 10:27 AM
#11
Another simple fix just by taking the time to look for yourself.
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CamelKool (07-19-20)
04-27-16, 07:31 PM
#14
Pole Position
Congrats, looks like you have yourself an easy fix. Imagine what would have happened if that hose blew off while you were driving?
04-28-16, 01:42 AM
#15
But those "check Engine Lights" were sooo pretty when they lit up on my BMW's.
I think the suggestion of the fuel pump leaking is valid. I believe the fuel pumps are mounted on the valve covers and when the gaskets connecting them to the valve covers fail, they leak oil not fuel. At least that's how I see it.
I think the suggestion of the fuel pump leaking is valid. I believe the fuel pumps are mounted on the valve covers and when the gaskets connecting them to the valve covers fail, they leak oil not fuel. At least that's how I see it.