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Old 12-23-2006, 02:15 AM   #1
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Default how do you gap your spark plugs?

At 33k miles, I got bored and wanted to check the gap on my plugs. They are the original (I assume) ones that came in the car. AC Delco ITR4A. From what I've read on here that is what our cars were born with.

Anyway, while checking the gap, I broke one of the little pins, you know, the one that comes up from the center of the plug. I mashed the L shaped thing down a little and made sure it was .60 from the remainder of the pin to the tip, but I want to replace that soon.

I am guessing that if I buy the NGK ITR4A-15, these are the same? How should I go about checking the gap? I have one of those little disk things from Autozone. Starts out small and gets thicker as you go around. Is that what you use? At $9 per, I would rather not break another.

By the way, it'* an 05 SE, no mods. Getting 20mpg around the city(part of the reason I wanted to check the gapping) and around 25-27mpg on the highway. That'* pretty low from reading other posts.

Merry Christmas to you guys and gals too.

Jeff
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Old 12-23-2006, 02:39 AM   #2
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you dont have to run platinums or iridiums....I'd match up the plugs though if you are going to replace it. I dont know if the NGK is identical or not.
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Old 12-23-2006, 04:50 AM   #3
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Default Re: how do you gap your spark plugs?

Quote:
Originally Posted by kristie_jeff
By the way, it'* an 05 SE, no mods. Getting 20mpg around the city(part of the reason I wanted to check the gapping) and around 25-27mpg on the highway. That'* pretty low from reading other posts.
Jeff
The mpg figures you're getting look good. At 33k the oem spark plugs are still fairly new.
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Old 12-23-2006, 10:36 AM   #4
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if you are replacing anyway, go with the NGK TR55'*...they are about $2 per plug
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Old 12-23-2006, 11:18 AM   #5
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I never liked that style gauge that you're using. I prefer the one that has a wire that matches the gap.
Change that broken plug soon. Here'* a pic of the style gauge I like to use.



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Old 12-23-2006, 02:25 PM   #6
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Use feeler gauges,,can't get more accurate then that...
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Old 12-23-2006, 02:35 PM   #7
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All of them will work. Like TT, I don't like the ramp ones as well as I like to work with an even surface to be certain as to the gap. They do work, however. As do the wire ones, and the feeler gauges. The feeler gauges will work better if you want a gap between the settings of the wire gauge. The wire gauge will give you a more accurate reading than a flat gauge as the plugs wear and the side electode starts to get a small valley in it.
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Old 12-23-2006, 02:45 PM   #8
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Quote:
Originally Posted by Archon
The wire gauge will give you a more accurate reading than a flat gauge as the plugs wear and the side electode starts to get a small valley in it.
why gap a old plug???

55'* are cheap as he11, throw a new set in, done...
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Old 12-23-2006, 03:52 PM   #9
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Quote:
Originally Posted by daman
Quote:
Originally Posted by Archon
The wire gauge will give you a more accurate reading than a flat gauge as the plugs wear and the side electode starts to get a small valley in it.
why gap a old plug???

55'* are cheap as he11, throw a new set in, done...
Because some people do. I provide options. People then chose what to do.
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Old 12-23-2006, 03:54 PM   #10
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I go a little crazy with spark plugs, I used to replace mine every 20k miles no matter what...

the lesabre only has its second set EVER and I'm going nuts since I need to replace them lol
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