So I recently purchased a used 2010 GX 460 with 150k on the clock and while it did have most of the maintenance done at Lexus , the spark plugs were never changed. Today I went ahead and replace them all and noticed that two of them, (one on each cyclinder bank - passenger and driver ) were fully bathed in oil. It looks like the oil is in the top side of the spark plug as both electrodes were dry. This is very disappointing to say the least.
2010 GX 460 oil in Spark Plugs
- Thread starter carlos33018
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
You will want to replace your tube seals
#Spark #Plug #Well Filled with Oil - ClubLexus - Lexus Forum Discussion
GX - 2nd Gen (2010-2023) - #Spark #Plug #Well Filled with Oil - Hi Guys, This is my first post on this forum. I wanted to make everyone aware of a possible problem with our engines. Mine may be a fluke but just in case this happens to more people I wanted to share. The car is a 2010 with 65,000...
www.clublexus.com
- Thread starter
- #3
Will that require a valve cover removal ?
Yes
r2m
Richard
Have you taken it to a smog test yet? That'll tell you if and/or out much oil if any you're burning.
- Thread starter
- #6
Couple of questions:
- Could replacing just the coil pack seals resolve this issue ? This is the seal that sits between the coil pack and the valve cover on the OUTSIDE of the valve cover. I was looking at valve cover gasket kits and it seems this is the only gasket that would need replacing. Any comment?
Here is the diagram I was looking at:
- Could replacing just the coil pack seals resolve this issue ? This is the seal that sits between the coil pack and the valve cover on the OUTSIDE of the valve cover. I was looking at valve cover gasket kits and it seems this is the only gasket that would need replacing. Any comment?
Here is the diagram I was looking at:
CYLINDER HEAD. Lexus GX 460 | Lexus Parts & Accessories Online
Lexus GX 460 CYLINDER HEAD
parts.lexus.com
Spark plug tube seal PN: 11193-70010
1119370010 - Gasket. Spark plug tube; spark plug tube, left - Genuine Lexus Part
Genuine Lexus Part # 1119370010 (11193-70010, 111930A010, 1119316010, 1119362040) - Gasket. Spark plug tube; spark plug tube, left
parts.lexus.com
- Thread starter
- #8
So I called quite a few shops here in the Austin TX Area and Toyota provided the lowest cost - 850.00 for both valve cover gaskets / spark plug seals. Going to move forward with the repair.
Request that they do the 8 other tiny seals that are on the valve cover. "Camshaft Bearing Cap Oil Hole Gasket" , they are little rings and figure 8s.
- Thread starter
- #11
Well they said the car was ready to be picked up, drove it 1 block AND
Check Engine Light came on
The 4Lo light is blinking, even though I am in 4Hi
Traction control light is on - almost like traction control is disabled.
Yey!!
Check Engine Light came on
The 4Lo light is blinking, even though I am in 4Hi
Traction control light is on - almost like traction control is disabled.
Yey!!
- Thread starter
- #12
Here is what they replaced:
Qty. 1 11213-0S010 - Valve Cover Gasket
Qty. 1 11214-0S010 - Valve Cover Gasket
Qty. 8 11193-70010 - Spark Plug Gasket
Qty. 4 11159-0P010 Camshaft Gasket
Qty. 2 11159-0S010 Camshaft Gasket
Qty. 2 90430-A0001 Gasket
Qty. 1 11213-0S010 - Valve Cover Gasket
Qty. 1 11214-0S010 - Valve Cover Gasket
Qty. 8 11193-70010 - Spark Plug Gasket
Qty. 4 11159-0P010 Camshaft Gasket
Qty. 2 11159-0S010 Camshaft Gasket
Qty. 2 90430-A0001 Gasket
sounds like limp mode
failure of a SAIP valve or one that didn’t get hooked up could cause that
Did you take back or have you pulled codes?
failure of a SAIP valve or one that didn’t get hooked up could cause that
Did you take back or have you pulled codes?
- Thread starter
- #14
I left it there overnight. Let’s see what they say in the morning.
Those are exactly the ones I was talking about - so at least that part is good.
- Thread starter
- #16
Ok got the GX Back - The cam positioning sensor's connector had become brittle over time and was no longer connecting correctly. Toyota replaced the connector (Crimped) and the car is good to go.
r2m
Richard
Gotta love simple fixes!
2011 GX460 107k . So I was just replacing my spark plugs and saw oil on every spark plug metal threads except the one by the firewall. What will happen if I dont change the spark plug seals and valve cover gasket etc. (implying I ignore this issue).
I did not see any oil on the electrode or the ceramic. It was completely dry. I am not burning oil and car drives perfectly, no CEL or any codes. I just had an itch to replace the plugs but was not seeing any issues. Infact I was surprised to see how good shape the original spark plugs were.
I did not see any oil on the electrode or the ceramic. It was completely dry. I am not burning oil and car drives perfectly, no CEL or any codes. I just had an itch to replace the plugs but was not seeing any issues. Infact I was surprised to see how good shape the original spark plugs were.
- Thread starter
- #19
There should not be any oil on the spark plugs, more than likely it’s the seals. Now, oil does conduct, and the spark plugs are made of ceramic, inside a metal tube. If the whole tube were to get full of oil, and short the coil pack, the spark plug could explode, destroying the engine. This is worst case , catastrophic scenario , but that’s the potential extent of the damage if left unattended.
Appreciate the input . Just FYI , generally oil does not conduct electricity, in fact oil is a great insulator ( electrical terms for things that dont conduct electricity). This is the reason most large power transformers and very large old breakers in substations are filled with oil.
