I heard a couple rumors, some of which could very well been fact. I'm going to try and use this to settle it, at for me...

How much (if at all) fuel injector cleaner will mess up your injectors. I've heard anywhere from any will to none will, and anywhere in between. It seems like a simple problem, but I'm not all that wise about the issue.

 

run a can of seafoam through the tank when tank is at 1/4.

when that has worked its way through do a can through the brake booster.

you will have a better running truck.

 

i've used fuel injector cleaner on all my vehicles and have never had a problem, it has always made them run better

 

I run a can of seafoam thru all my vehicles at least twice a year. I have never had or heard of anybody who has had a problem with any cleaner at all.

 

what preciesly does seafoam does?

 

cleans all the crap out of your engine.

get a can and read what it does.

or google seafoam.

 

When he says brake booster he mains through the vacumn hose that attachs to the brake booster. This will pull it into the intake manifold.

 

I can do the seafoam part, not quite getting the other part.

You want me to unplug this part (the line coming off the brake booster) of the vacuum system and spray this **** in there when the truck is running? I thought the vacuum system was supposed to be, well, air...

 

"I thought the vacuum system was supposed to be, well, air..."
For the most part, yes, at least the absence of air caused by suction/differing atmospheric pressure values. However, all you are doing is sucking the seafoam up through the large vacum line and into the intake plenum. From there the seafoam is distributed into the valve train, clyinder heads etc. It is a simple and effective way to get the good stuff into the intake trac where it can do its magic. You get the same result by adding it into the gas tank - it still ends up in the same places - just takes a different route to get there. You will not hurt anything by sucking up the seafoam through the brake booster line and into the intake plenum.

As far as the original question is concerned, I have used different types of FIC for well over twenty years in a multitude of vehicles made by the major automotive players in N. America. I have never had a problem as a result of using FIC - I do follow the directions as provided by the manufacturer though. I have many friends who are professional wrenches and I have never heard any of them say that FIC is harmfull to the injectors. Most auto manufacturers actually flog their own brand of FIC which they will gladly charge you an arm and a leg for to run through your injector system.

Cheers!

Mike