
ok so i have a 99 suburban 5.7 k1500 automatic and its running funky i start it and it runs fine sometime other times it feels like its missing but then it warms up to temp i turn it off and then go back later and its fine or not so what its doing is missing and spitting but only some times its baffled me check wires cant find vac leak fuel filter changed cleaned egr checked plugs looks good any ideas wood be great thanks guys:neutral: