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| Spark Plugs (Page 1/2) |
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donuteater306
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JUL 15, 04:46 PM
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6 Delco R42TS plugs purchased, this is what I received:
2- original style, AC Spark Plug
4- modern, AC Delco
Ill submit my complaint to Pontiac 🤣🤣
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Patrick
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JUL 15, 05:31 PM
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Interesting. As different as they look though, I suspect the part of them that sticks into the combustion chamber actually performs the same.
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donuteater306
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JUL 15, 06:54 PM
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Oh ya, look at that, ur right…that’s the part that matters. Oh well, I ordered two more AC Delco. I had just replaced them in March 2020 but if I don’t replace the three forward plugs every two years, they rust. This time I did the wires too.
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Patrick
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JUL 15, 07:07 PM
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| quote | Originally posted by donuteater306:
...if I don’t replace the three forward plugs every two years, they rust.
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As long as anti-seize is applied when the plugs are installed, it really shouldn't be an issue. My spark plugs were installed maybe seven years ago in my Formula, my car(s) live outside in the rain, and I don't anticipate any problems removing the plugs.
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theogre
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JUL 15, 08:14 PM
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Use better plugs.
ACdelco or Autolite platinum tips and others have better metal shell to resist rust.
When pulling any spark plugs...
Clean the hole before ever try using a wrench.
Turn them 1 turn max and clean again because you often loosen a lot more crap.
get some "canned air" if don't have any type of compressor to blow out trash and rust.
HD Lowes and sim often have it in cleaning or electric section.------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)
The Ogre's Fiero Cave
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olejoedad
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JUL 15, 08:23 PM
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| quote | Originally posted by theogre:
Use better plugs.
ACdelco or Autolite platinum tips and others have better metal shell to resist rust.
When pulling any spark plugs...
Clean the hole before ever try using a wrench.
Turn them 1 turn max and clean again because you often loosen a lot more crap.
get some "canned air" if don't have any type of compressor to blow out trash and rust.
HD Lowes and sim often have it in cleaning or electric section.
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I will disagree, use the AC Delco copper plugs.
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pmbrunelle
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JUL 15, 08:23 PM
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The front plugs can rust in like a month. I noticed that on my car which sleeps outside and gets rained on.
Antiseize on the threads doesn't stop the rest of the body (including the hex) from rusting.
For me, I like to remove the spark plugs once or twice a year. Then wirebrush clean, and regap. It's a pleasant Saturday mechanic activity.
I recommend removing plugs often, just to make sure that nothing gets stuck or overly rusted, and because the plug is the canary to the cylinder.
My friend Claude recommends the AC Delco 41809 for the Fiero V6 because it is stainless and doesn't rust.
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Patrick
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JUL 15, 09:04 PM
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donuteater306
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JUL 15, 09:11 PM
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This is what 3 years did to my plugs, and is why I Preemptive strike at two years. I always apply anti-seize, clean around them before removing, and I apply dielectric to the plug wires. Learned this from Ogre years ago đź‘Ť. I really wish the original AC was still a thing.
My car had developed a slight misfire, and the tachometer was jumpy. Knowing the plugs cap and rotor had only 6k miles on em, I decided to replace the wires. I have an earlier post regarding red plug wires. The Fiero store replaced the wires under warranty, but unfortunately not only are the new STI wires black, they’re also a narrower gauge than the previous red ones. Regardless, I’m grateful that they were guaranteed, and also my misfire is gone and the tach is smooth again.
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Kitskaboodle
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JUL 16, 04:59 PM
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I’ll be the lone wolf here….
I have always been an NGK guy.
I run them in everything I own.
Standard copper core please.
Thank you. 
Kit
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, I'll post in this thread and report what if any difficulties I faced. 
