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It’s time consuming for sure and it’s hard to do it without taking the head off. But I have to do a head gasket replacement one day so maybe I’ll do that as well

I tried a soak with marvel mystery oil and it helped a little. How long did you soak the pistons with b12 and how much did you use? How much in each piston because I don’t want to lock up the engine. I’ll be sure to put a towel over the holes and start the car without the plugs to dry it out a bit

I tried a piston soak with marvel mystery oil and it helped a little. Any other things to try the soak with?

I’ve done some reading and the ngk copper v power plugs run 1/2 point hotter than the standard ngk copper. This way if I get copper I can clean them and soak them more so they don’t get contaminated

I might end up getting ngk copper v power plugs and just cleaning them every so often so they don’t get contaminated. I don’t like to clean fine wire plugs because you can damage them easily

I think that fine tip plugs such as platnum and iridium are more delicate so it’s easier and safer to just get new ones

I’m So when I look on rock auto, it only shows ngk plugs with a 5 in the item number. Does the site only want to give me options for the same heat range my car accepts?

Ok. Rock auto has a thing where it shows that particular plug hear range. Most iridium plugs show at 16 heat range where copper and platnum plugs show at 5 heat range. So is 5 good in this case? Because the chart shows bigger numbers being colder so I’m confused. Also do copper plugs have...

So is the last number key to the heat range? So a 2500 plug for example runs cooler than a 2509 plug?

Do you think that platnum plugs have any advantage over copper other than longevity?

I purchased it from rock auto

I’m my case I just cut the catylitic converter because it was destroying them. Luckily in my state, if your car is over 20 years it’s considered a classic and is exempt from emissions. As for the plugs, I might just buy a gap tool just to have as the preset plugs sometimes could be off. So...

What does that mean? I heard of other people saying that but I’m confused on what it means.

I ended up getting ngk 7090 platnum plugs for $2.50 each but I just realized that the gap is 0.040 while Toyota says this car should have 0.044. Does this little amount matter? Maybe I’ll just keep the order placed and just go to Walmart and buy a $1 gap tool

Yes they are. I have no clue how long they have been on there so I am going to assume they need to be changed asap. Car burns a lot of oil especially when coasting down a hill in gear and then giving it gas at the bottom of the hill. It puffs a big cloud of blue lol

That’s good news to me that it doesn’t look lean. And yessss she goes through her oil. Probably goes through a quart every 400 miles which isn’t the best but nothing else I can do. I can’t afford a new engine at the moment. 2000-2002 corollas has very bad burning issues. The 1998-99 were bad but...

The previous owner put some ngk iridium plugs in my 2000 Corolla. I don’t know how long they have been in there but the car does burn oil and it appears that it also runs lean. I did just get a p0300 code which is a misfire. I felt the car shake for a few seconds but it stopped and drove normal...

Will these plugs be okay? https://shop.advanceautoparts.com/p/autolite-copper-resistor-spark-plug-3924/5390710-P?searchTerm=copper+spark+plugs

I use 10w40 and it seems to help slightly. My only concern is will it be okay during winter temps (-5f)

The previous owner could’ve put them in 20k ago. I’m not sure. I found these plugs: https://shop.advanceautoparts.com/p/autolite-copper-resistor-spark-plug-3924/5390710-P?searchTerm=copper+spark+plugs