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thanks for helping with my issue. I have just pulled # 8. The complete tube is wet, not good.
Ill research this issue and hopefully its fixable. Does the oil seep through the spark internals or via the spark plug thread & engine ?
Ill look at the seals , it will probably make sense
wet..
The coil pack lower portion can be removed and cleaned up... cool, Ill pull all of them tomorrow, clean any that have traces of oil and replace any that are wet.
However if the oil was there long, the coil pack may be ruined.. noted.
2 questions
How old are those DENSO plugs ?? They look original , I believe they are 4 - 5 years old. Its not my car from new, but history has them replaced.
Who has done your oil changes?? local garage, not lexus. its possible he overfilled but I dont think so. I am hoping its the seal you mention. I come from driving m3's and check the oil before going anywhere . level does not move between changes. ( having seen #8 I dont know how this is possible.)
Need to make sure your not over filled, and if you have more WET plugs, you are due for spark plug tube seals. Noted ..Ill need to research this.
If you have more oil in the spark plug tubes, you can get creative to clean them with brake cleaner. understood.
thanks for helping with my issue. I have just pulled # 8. The complete tube is wet, not good.
Ill research this issue and hopefully its fixable. Does the oil seep through the spark internals or via the spark plug thread & engine ?
Ill look at the seals , it will probably make sense
wet..
The coil pack lower portion can be removed and cleaned up... cool, Ill pull all of them tomorrow, clean any that have traces of oil and replace any that are wet.
However if the oil was there long, the coil pack may be ruined.. noted.
2 questions
How old are those DENSO plugs ?? They look original , I believe they are 4 - 5 years old. Its not my car from new, but history has them replaced.
Who has done your oil changes?? local garage, not lexus. its possible he overfilled but I dont think so. I am hoping its the seal you mention. I come from driving m3's and check the oil before going anywhere . level does not move between changes. ( having seen #8 I dont know how this is possible.)
Need to make sure your not over filled, and if you have more WET plugs, you are due for spark plug tube seals. Noted ..Ill need to research this.
If you have more oil in the spark plug tubes, you can get creative to clean them with brake cleaner. understood.
#8
nooooooooooooooooooooooo!!!!!
DO NOT CLEAN AND REPLACE PLUGS. PROBLEM WILL START ALL over again. 100%
you have a leak, and it’s either the spark plug - “TUBS”, or the “Valve Cover Gasket”, or both.
DIY surgery if you can. I guess about 4 hours in garage.
The round seals in Joe's post need to be replaced. They're not doing anything useful right now. I've never seen one quite this bad, you would be wise to inspect the valve cover closely for damage, cracking, etc. before assuming it's just a failed seal. There are a whole host of parts necessary to do this job right, and there is a whole lot of stuff to remove to get the valve covers off and replace the seals. While you're at it, you should also check the valve lash just because you've got everything open and accessible with the covers off. Check this thread for the necessary parts:
All good, spark plugs are for the bin. I was going to clean the igniters. #8 looks like it was under water , so thats for the bin also.
Ill research TIS and get the job done. Happy if the spark plug gaskets are the solution.
"you would be wise to inspect the valve cover closely for damage, cracking, etc. before assuming it's just a failed seal" - makes sense, fingers crossed, some research to do. I hope the head is ok . #8 tube was full & was loose / easy to pull out, maybe due to worn spark plug gasket. Renewing TIS subscription.
"you would be wise to inspect the valve cover closely for damage, cracking, etc. before assuming it's just a failed seal" - makes sense, fingers crossed, some research to do. I hope the head is ok . #8 tube was full & was loose / easy to pull out, maybe due to worn spark plug gasket. Renewing TIS subscription.
It's pretty unlikely the source of the oil is the cylinder. It's a lot more likely the seal between the head and the valve cover. Less likely but possible is a crack in the valve cover or the spark plug tube in the head. In all likelihood, if the head has a crack allowing oil to leak into the plug hole, you've have a crack all the way to the cylinder and you'd see coking in the oil from exhaust gases. Since the oil appears to be pretty normal colour, I'd wager the issue is the seal, and if the plug came out easily I'd say someone didn't quite get everything tighened down properly the last time someone had the valve cover off.
It's pretty unlikely the source of the oil is the cylinder. It's a lot more likely the seal between the head and the valve cover. Less likely but possible is a crack in the valve cover or the spark plug tube in the head. In all likelihood, if the head has a crack allowing oil to leak into the plug hole, you've have a crack all the way to the cylinder and you'd see coking in the oil from exhaust gases. Since the oil appears to be pretty normal colour, I'd wager the issue is the seal, and if the plug came out easily I'd say someone didn't quite get everything tighened down properly the last time someone had the valve cover off.
1. will be happy if just the seal - will make my Christmas.
2. #2 spark plug felt lose , then immediately tightened - like I turned it the wrong way. . #8 I could not feel how tight it was due to the angle.
3.
Parts - I got this from another thread - it looks right, 11213-38060 - Cylinder Head Gasket x1 11214-38040 - Cylinder Head Gasket x1 11229-38030 - Cylinder Head Gasket x1 11193-38030 - Spark Plug Tube Seals / Gaskets x8 23224-38010 - Fuel Pump Gasket x2 23915-46011 - Fuel Pump Insulator x2 90301-A0029 - O Ring x2 11159-0S010 - Camshaft bearing cap oil hole gasket x2
^^ Did an ECU reset not change the status of the CEL ?
I just dealt with:
P0172
P0175
P1170
Which is pointing to a dirty or failing MAF sensor...
Joe Z
I pulled codes immediately after the car stopped , only code was P0365. Freeze frame said MAF was 6g. the next day after reset it is 20g
After towing it , I reset the ECU , all codes were removed, no CEL , Then restarted. immediately got P0365 and the engine values posted.
Before the car cut out, & for 5 seconds, it felt like at least 2 cylinders stopped. Engine was unbalanced and shook badly.
My gut feeling was valve contact, or something mechanical, I knew it was tow truck time and not to try starting again.
P0365 hinted at camshaft timing and went down that rabbit hole.
Les pointed me in the right direction and happy for every ones assistance, kept me on the straight and narrow.
Before tear down...
Do the full cleaning procedure on all the spark plug tubes and coil packs to clean out all the oil and oil vapors.
(and of course the replacing the severe submerged coil)
I don't think there is any harm in flushing out clean with brake cleaner to make sure it's oil free..
Especially the threaded holes.
You can also check the valve cover bolts to see if they are loose.
My opinion is to reinstall all the new plugs and make sure all is 100% operational and CEL free
Then move onward to solving the leaking gaskets... Etc..
Of course the oil level on the dipstick should not be past the 2nd dot.
Many people here or even shops make a mistake and fill the cars up with 10 quarts..
I've proven that's an overfill for sure.
Good luck and keep us posted on your next steps..
As these original 08's get older we expect to pass into some uncharted territories.
Before tear down...
Do the full cleaning procedure on all the spark plug tubes and coil packs to clean out all the oil and oil vapors.
(and of course the replacing the severe submerged coil)
I don't think there is any harm in flushing out clean with brake cleaner to make sure it's oil free..
Especially the threaded holes.
You can also check the valve cover bolts to see if they are loose.
My opinion is to reinstall all the new plugs and make sure all is 100% operational and CEL free
Then move onward to solving the leaking gaskets... Etc..
Of course the oil level on the dipstick should not be past the 2nd dot.
Many people here or even shops make a mistake and fill the cars up with 10 quarts..
I've proven that's an overfill for sure.
Good luck and keep us posted on your next steps..
As these original 08's get older we expect to pass into some uncharted territories.
Joe Z
Hi Joe , plugs arrive today, I will replace the plugs & coils today and see if it starts . Ill reply back this afternoon.
Its got a few miles, but in terms of reliability vs performance its a well engineered car. I have had 2 x e46m3 back to back. Nice cars, but I would not buy another without warranty.
Perfect - thank you ,
I checked out TIS , & youtube has a guy replacing the valve cover on a ls460.
It looks doable.
Todays plan is to clean tubes, replace plugs, and coil. If it runs, we have found the issue.
Ill then order the above. if bank 1 is clean , Ill just do bank 2.
12-13-20 | 10:56 PM
