Originally Posted by boostin13b
The only real injector cleaner that I've seen work is 3M. $20 a can. It will not fix leaky injectors, but does help with old dirty systems. It's not the fake throw in your gas tank stuff. You actually run the engine at idle straight off the bottle and use that as your fuel. Clamp off the return and pull off the feed and the fuel pump fuse. It does wonders for old systems but will not fix bad injectors. I used this on customer cars on a daily basis and on my own rotaries.
Ive used products like this working in mechanic shops and dealerships.
"Fuel system cleaner"
Clean out the carb or throttle body,I use a old tooth brush too.
Start the car let it idle,
You have to find a vacume going into the engine (I try to get one on the intake)
Set this cleaner in a bottle set up with the dripper action, let it get sucked in,but you have to adjust the valve so not to much goes in.
The say its suppose to clean the injectors.If I had a bad injector,I wouldnt depend on this method.
But I can say it does clean out carbon depostits and build up sin th ehead,block,pistions,rotors etc.
It will foul plugs.
Most shops charge $80.-$100. for this service.