do i need to clean sparkplugs after pouring injector cleaner or is it fine like that.just curious because i heard somebody say spark plugs get dirty when pouring an fuel additive,injector cleaner.any advice would help.thanks,
They MAY get a little dirty from carbon deposits being loosened and removed from the intake runner, but don't worry. They will easily burn this crud off after the cleaner is gone. Reversion pulse A phenomenon most likely to occur in the lower rpm range of an engine with a big cam. Here, a positive pressure wave arrives at the exhaust valve during the overlap period and pushes exhaust back into the combustion chamber, through the intake valve, and into the intake manifold.
Here is how I do it: 1 Use a fine wire brush wheel to clean off the threaded portion of spark plug, the face that sits inside the cylinder, and the overhanging ground electrode. Do not allow the wire brush to contact any part of the ceramic insulator surrounding the center electrode. (you do not want any metal particles to be left on that insulator). A Dremel tool with a small cup brush is ideal for this. 2 Fold a small piece of 400 grit wet/dry sandpaper over a .025” blade and insert between center electrode and overhanging ground electrode. Move back forth to clean off the two electrode surfaces. 3 Immerse the plug ends into Sea Foam Engine Treatment to loosen up oil carbon deposits. Let soak for 15-20 minutes. 4 Remove the plugs from the Sea Foam and wipe clean with a fresh paper towel. 5 Cut a 2” section of pipe cleaner (the kind pipe smokers use) and use that to dig out any crud deposits all around between the inside of the threaded metal body and the ceramic insulator. Repeat with a fresh piece of pipe cleaner until it comes out clean. 6 Blow out the cavity between the spark plug body and the ceramic insulator around the center electrode. 7 Check the gap setting to clear a .030” (or whatever your setting is) gauge wire and to not pass a .032” gauge wire. Do not use a sandblaster as some recommend - it will leave the ceramic porous and more prone to foul.
It is a very good idea to at least look at your plugs after putting additives in your gas tank. Look for black build up. Additives or fuel cleaners work on the principal of removal of carbon , it has to go somewhere. Most of this will burn off within the combustion chamber, and go out of the block on the exhaust stroke of your engine. you should check your plugs because some minute carbon deposits will bond to the plug end. If its a good/new car and regulerly maintaned the chance of having to clean your plugs go down. best thing is to pull the #1 plug and look at it
