louie83814

Got a '98 4.6l with 126k recently started acting like it wasn't firing on all cylinders. Was told by a friend to check the injectors and clean them out. Any help would be appreciated or send me the link if someone has done them before. Also how do I check to see if a cylinder is misfiring? I hooked up a code scanner and came up with nothing, but I cant figure out what else it could be. Plugs, wires, I have no idea. Please anyone help.

Chad81

http://www.kanolabs.com/engCle.html

Best cleaner on the market hands down. You can't find it in stores so you will need to order directly from the website, just make up a business name they don't verify it.

louie83814

Ive read that cleaners that go through the tanks don't do much. I'm looking for how-to on cleaning injectors etc. Thank you though.

Chad81

Kreen is far different from typical cleaners you find on a store shelf, it's an extremely strong industrial strength cleaner and even comes with a MSDS. It's worth a shot at $15 which is enough to treat your crankcase + fuel tank (plus they throw in a free can of Kroil spray which is the absolute best for removing frozen bolts), I ran it through my old F150 that had a 4.2L with 110k miles and it brought new life to my engine. Here is a nice thread with some more information about Kreen : http://www.bobistheoilguy.com/forums...1940735&page=1

louie83814

Thank you. I will look into it.

LUVmyDUX

I have heard this Kreen stuff is amazing for loosening stuck bolts. As for injector cleaning, I want o try it. But my engine runs pretty strong. The previous owner said he always throws in a $3 bottle of STP injector cleaner with every other fill up and I've been doing the same since I've owned my truck, 2 months. All I know is my 4.6 idles smooth, has good power and drives like new so I will continue doing this.

louie83814

Ended up just being plugs and wires. All of my wires weren't where they needed to be. Runs like a champ now! Thanks guys.

atikovi

Best thing is to take them out and send them to a shop that does ultrasonic cleaning. They also test them for flow and spray pattern and can balance them.

mgbk1200rs

Use Seafoam, put it into the engine through the vacuum hose, then some in your oil and lastly into the gas tank. It works great on older high mileage engines.

tommy snell

I have a 2005 f150 stx 4.2 v6 code reads cylinder 4 misfire system 2 lean I changed the spark plug but didn't help any suggestions?