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Some put the plugs back in and crank it, to continue the cleaning to the catalytic converter. Or at least bumping the key to get it to that point will, let it sit on the cat substrate.. rednecks drill a hole forward the cat, spray brake parts cleaner in there and clean it that way. Then pat the hole. Some crank it first, under the belief you need to expel the liquid, when all it does is get sent out the exhaust..
As far as I know, there aren't any directions for one.
There is a write-up on the Saturn forum as to how one guy did his, something about known oil-burning on those but there are more cars out there than just a discontinued brand!
Maybe we should start over with some information on at least how many miles on the car, and what, exactly, you are trying to accomplish? What are the symptoms you are trying to clear?
To master the obvious, if the car is running fine, doing some sort of "clean out" using ersatz materials and techniques is very likely to be, at best, a waste of time and money.
There are well-recognized cleaners out there like Techron, if you get a big bottle of that and use per instructions, it should clear any symptoms that are related to carbon buildup on intake valves, any issues with dirty injectors, etc. Note that if you do the "massive dose" cleanup, Chevron recommends an oil change soon after doing that.
If you have a dirty engine, in my experience, avoiding short trips (this is the usual source of sludge buildup), going to a good Top Tier gas with adequate octane to avoid pinging if you have carbon buildup on piston tops, and going to a better grade oil, either go synthetic, or maybe go to a Diesel rated oil like Rotella, use an excellent filter like a Pure One or Boss, this sort of routine will gradually clean things up. Realize that using a detergent booster of some sort, that the detergent and extreme pressure additives in oil compete for surface area on bearings, etc. It is way better to buy an oil that has whatever additives you want already in it, than to try to be an amateur lubrication engineer, with no lab and no data.
It's all analogous to straightening out your diet, exercise, etc. in your own body, as opposed to placing false hope in some sort of miracle pill or elixir. The simple and somewhat boring approach of just doing things right is what will in general give best results.
To master the obvious, if the car is running fine, doing some sort of "clean out" using ersatz materials and techniques is very likely to be, at best, a waste of time and money.
Much like all variants of "body cleansing," but that's irrelevant here, too.
Please forgive me, I do try to ask general questions. I do a car almost every month and I do my best to clean up other people's formerly neglected wrecks etc into some semblance of a great car, possibly re-sell I try to ask general questions. In this case it's a 1989 Nissan Sentra with 258k miles and yes I want to know if the liquids on a hot engine does anything. So many swear it does.
Check out YouTube. Several examples of people using different products to clean carbon, which after much thought I figured out what youre doing.
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