04 LS430 spark plugs at 123k miles-pics
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04 LS430 spark plugs at 123k miles-pics
I decided this past weekend to do a little driveway maintenance on my LS, which included cleaning the MAF sensor, the throttle body, and changing out the spark plugs. I checked over the service records (bought used in 2011), and none of these items had been tinkered with according to the records. The sensor was filthy on one side, and the throttle body was somewhat dirty and easy to clean.
The old plugs were almost impossible to remove due to the buildup on the threads. I don't know much about plugs and how they should look after 123k miles, but to me, it seemed like there was quite a bit of carbon build up on a few of them. After completing all of these tasks, I noticed that the car does idle lower in park (~700rpms), and while in gear at a stop (500rpms). Acceleration seems a bit better, and I plan to test gas mileage when I can get to the interstate. Previously I was getting an average of 27mpg at 78mph.
Pics of the plugs.
The old plugs were almost impossible to remove due to the buildup on the threads. I don't know much about plugs and how they should look after 123k miles, but to me, it seemed like there was quite a bit of carbon build up on a few of them. After completing all of these tasks, I noticed that the car does idle lower in park (~700rpms), and while in gear at a stop (500rpms). Acceleration seems a bit better, and I plan to test gas mileage when I can get to the interstate. Previously I was getting an average of 27mpg at 78mph.
Pics of the plugs.
Last edited by deadguy; 01-20-15 at 05:33 AM.
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ETA:
Last edited by deadguy; 01-21-15 at 04:43 AM.
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kennyRX300
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04-21-14 03:48 AM