I just changed my oil and filter using Lucas synthetic and K&N filter. It might be irrelevant but my truck is starting to sputter a little when Im stopped at a light and also when I give it some gas. Its fine once i get back up to 2300 rpm. I also did an engine flush when i changed the oil. So could it be the fuel filter? pump? spark plugs? the air filter is clean, no leaks anywhere, need help!

 

What kind of truck, year, engine??? all that good info. Is the Check Engine Light on?

 

oh ya its a 96 chevy 2500 5.7 and has 380,000km