1999 Pontiac Grand Prix "fuel injector cleaner" Questions

misfire on cylinder 1 try changing your plug wires, and see if that works, or pour some injector cleaner in the gas, (if it's fuel injected), or replace the injector on #1 cylinder

What is the most effective fuel injector cleaner for a 3100 v6 sfi engine? I always use this one in all GM motors http://www.amazon.com/Chevron-Techron-System-Cleaner-65740/dp/B00092893E

Replaced fuel pump and MAF sensor. Engine also gets hot and coolant backshots after long trips. Please Help!!!!! id check the headgasket and replace the fuel filter...maybe injector cleaner would help

is cleaning the fuel injectors hard ?? There are "in tank" cleaners available from parts stores that you can pour in the fuel tank when you fill up.

fuel injector cleaner through the tank-Denny Vehicles have something like a choke for cold starts which allows more fuel for start-up. As the vehicle warm up it automatically adjust. I would check the

...fuel filter, put injector cleaner in, & had the catalytic convertor checked (which was good). it ran great this am but then started to doing the same thing again this afternoon. :( what could be ...

fuel injection cleaner drove about 100 miles, and bam got code P0172 code system to rich never had that code could my bank 1 sensor 1 o2 bad all of a sudden, ,,, Does it give a misfire or just, system

...fuel injector cleaner first. Seafoam work really good. It costs about 7 dollars a can . just pour it in a full tank of fuel. I would replace the air filter and if that doen't help try running a good ...

fuel system cleaner through your gas tank?  This is the least costly approach.  Try 2 bottles in a full tank.  Next could be dirty throttle body and or clogged air filter...no reference

...to stay the cheapest place in town. You may have gotten bad gas if it happened after you filled up. Try a bottle of water remover and fuel injector cleaner in your tank. Next would be a fuel