I have a 86 ranger with a 2.9L v6 thats miss firing at idle, sluggish on hills, and not the best gas mileage. its been diagnosed as a notorious fuel injector problem with the 2.9L. i've tried lucas, gum out, and a couple other injector cleaners and isnt helping the problem. my injectors are loud and ticking like somethings not right. anyone know what else i can try to get them to spray like they are supposed to? any help appreciated.