I just got thee old girl back (92 chev 3/4 ton) from the shop. They replaced the EGR valve and the guy said run some seafoam and high octane gas through it and should stop pinging in a few tanks. Well today it got worse and louder and now it is missing and I couldnt even go 40mph I had to come home early. I am ganna bring thee old girl back to the emergency room and see what the doc says. Hopefully its just a cold or mabe the flu and not stage 4 cancer HAHA. Than I will have huge medical bills HAHA. I all ready have huge medical bills since I am a stage 4 survivor myself WHOOHOO 6 months remission!!! What do you guys think it is? any idea's so I can prepair myself for the bad news. luckly I just bought another truck a week ago. Mabe the old girl was jelouse of that truck. LOL Talk to ya guys later!!