[quasar34]

Ok, so I have a 95 3.4 camaro, and every couple weeks when I am cruisin at about 25-30mph and I go to accelerate I hear a loud popping/thud sound that seems to be coming from my engine (it’s loud enough that when I passed a few kids sittin in front of their S-10 they yelled “OUCHHH�).. When it happens I can feel the thud in the gas peddle.. I have no clue what this is…

Here is all the background info on the car to maybe help… Cars got 131k on it, motor is a jasper w/ 17k.. Plugs and all that were changed when engine was done. I was driving it for maybe 2 months with a bad EGR valve a couple months ago but it’s been replaced for awhile.. Could my plugs be fouled up from running rich? Can anyone think of anything? Thanks