My truck is stalling out at stop sign's,lights etc.I thought I solved the problem by running hi-octane and adding some injector cleaner too the gas tank.I noticed when I took my truck in for an oil change they also clean the injectors for $79.99,how do they clean them and what is the best way.I changed my fuel filter at 44,000,I put on another ten thousand since.Anyone have any suggestion for me to try.Thanks