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03-24-2013, 09:45 PM #1
What spark plugs with 234k look like! (Photos)
Today I replaced the spark plugs on my 2005 Saturn Ion. They are original to the car with 234,000 miles on them. Well, they definitely look like they needed to be changed. The electrodes on 1 and 3 are worn down to the porcelain. The OEM plugs were double platinum AC Delco but Autozone only had the iridiums, so I now have AC Delco iridium plugs. Here's some pictures of them:
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03-25-2013, 08:56 AM #2
How is the gas mileage before/after? I need to replace the plugs on my wife's Vue.
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03-25-2013, 09:44 AM #3
Before I was making 31-33 mpg easily. I'm hoping I can now make 35, but that was a struggle even when the car was new. The only reason I decided to give changing the plugs a try was because on light to medium acceleration the engine would seem like it was missing or bucking. It wouldn't do it all the time, but some of the time. I haven't changed the plugs because I was dreading them being seized in the head and either breaking off or stripping the threads in the head, so I kept putting it off. I think it was either the plugs or low transmission fluid. Changed the plugs, and checked the level of the transmission fluid (which seemed fine). I changed them yesterday afternoon so in a day or two I'll report back new mpg numbers.
03-25-2013, 10:36 AM #4
That's insane that you didn't get misfires before. Only thing I can figure is that you had a strong electrical current. Hopefully, you changed out your plug wires, too. Those will degrade with time as well.
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03-25-2013, 11:44 AM #5
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I'm not calling you a liar, but that is hard to believe!!! I don't think I've ever gotten over 50,000 on a set of AC Delco plugs EVER. Your engine must be just perfect, you are very lucky they actually came out. What type of engine, and was it aluminum head??2004 Chevy Colorado
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03-25-2013, 12:04 PM #6
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03-25-2013, 12:55 PM #7
I did change the "plug wires" if you want to call them that when I did the plugs. It's coil-on-plug, so the wires looked just like 4 inch extensions and nothing more. Next I may run a bottle of injector cleaner through since I've never done that yet. The suspension definitely needs some love, but with struts being $133 each, that's going to have to wait a while longer.
Last edited by Crawdaddy; 03-25-2013 at 01:26 PM.
04-06-2013, 07:57 AM #8
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