oil in intake manifold when changing spark plugs on IS250
10-28-11, 11:47 AM
#1
oil in intake manifold when changing spark plugs on IS250
Hello all,
I'm still new on the board, but have always done my own maintenance on cars, including a few engine rebuilds. That said, this is my first Lexus. It is a 2007 IS250. I have the shop manual.
I just got through changing the spark plugs, but noticed that there is a few drops of oil dripping from the intake manifold runners (it had been sitting on some newspapers I spread out overnight).
I only found one other post where a member found the same thing, and a Lexus tech said it was normal & cleaned it out (presumably at the dealership).
I don't see how it would be possible to take the intake manifold further apart to clean it out. I would think this could be leftover from the PCV valve or something, but not sure.
I'm still new on the board, but have always done my own maintenance on cars, including a few engine rebuilds. That said, this is my first Lexus. It is a 2007 IS250. I have the shop manual.
I just got through changing the spark plugs, but noticed that there is a few drops of oil dripping from the intake manifold runners (it had been sitting on some newspapers I spread out overnight).
I only found one other post where a member found the same thing, and a Lexus tech said it was normal & cleaned it out (presumably at the dealership).
I don't see how it would be possible to take the intake manifold further apart to clean it out. I would think this could be leftover from the PCV valve or something, but not sure.
10-28-11, 03:33 PM
#2
Just a follow up:
just got everything cleaned, back together, and doubled checked. It doesn't appear that there was very much oil at all. I had to tip the intake a few degrees to disconnect something when taking it out (not much), so maybe that's what let the small amount of oil move around, but again I'm not sure.
I got the manifold cleaned up without much hassle. The bottom part of the intake looks clean & throttle body was not very dirty at all. Did not see any other leaks or any bad seals / gaskets.
just got everything cleaned, back together, and doubled checked. It doesn't appear that there was very much oil at all. I had to tip the intake a few degrees to disconnect something when taking it out (not much), so maybe that's what let the small amount of oil move around, but again I'm not sure.
I got the manifold cleaned up without much hassle. The bottom part of the intake looks clean & throttle body was not very dirty at all. Did not see any other leaks or any bad seals / gaskets.
10-29-11, 12:50 PM
#5
Just to clear this up - the oil was inside the upper intake manifold (plenum). It did not look like it was from the valve cover gaskets, as I did not see any leaks from that area. I apologize if I am misunderstanding what you are trying to say.
There was a little bit on the valve stems that I could see, but I expected that.
Test drove last night & today (on highway) with no issues so far...
There was a little bit on the valve stems that I could see, but I expected that.
Test drove last night & today (on highway) with no issues so far...
09-02-13, 04:58 PM
#6
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Hello all,
I'm still new on the board, but have always done my own maintenance on cars, including a few engine rebuilds. That said, this is my first Lexus. It is a 2007 IS250. I have the shop manual.
I just got through changing the spark plugs, but noticed that there is a few drops of oil dripping from the intake manifold runners (it had been sitting on some newspapers I spread out overnight).
I only found one other post where a member found the same thing, and a Lexus tech said it was normal & cleaned it out (presumably at the dealership).
I don't see how it would be possible to take the intake manifold further apart to clean it out. I would think this could be leftover from the PCV valve or something, but not sure.
I'm still new on the board, but have always done my own maintenance on cars, including a few engine rebuilds. That said, this is my first Lexus. It is a 2007 IS250. I have the shop manual.
I just got through changing the spark plugs, but noticed that there is a few drops of oil dripping from the intake manifold runners (it had been sitting on some newspapers I spread out overnight).
I only found one other post where a member found the same thing, and a Lexus tech said it was normal & cleaned it out (presumably at the dealership).
I don't see how it would be possible to take the intake manifold further apart to clean it out. I would think this could be leftover from the PCV valve or something, but not sure.
I don't quite get what this is for? Could you give me some insights and help?
Thanks a lot!
Mike
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