I HAVE A 71 OLDS 455, HAD BEEN SITTING WITHOUT STARTING IT FOR ABOUT A 2 MONTHS. WHEN I STARTED THE MOTOR IT STARTED RIGHT UP, BUT AT IDLE IT POPS. SEEMS LIKE ITS ON A SPECIFIC ROTATION (MEANING ROUGHTLY SAME INTERVALS BETWEEN POPS) ANY INFO WOULD BE GREAT, WAS TRY TO GET MY FLOATY OUT TO LAKE PERRIS THIS SUNDAY??

I HAVE A 71 OLDS 455, HAD BEEN SITTING WITHOUT STARTING IT FOR ABOUT A 2 MONTHS. WHEN I STARTED THE MOTOR IT STARTED RIGHT UP, BUT AT IDLE IT POPS. SEEMS LIKE ITS ON A SPECIFIC ROTATION (MEANING ROUGHTLY SAME INTERVALS BETWEEN POPS) ANY INFO WOULD BE GREAT, WAS TRY TO GET MY FLOATY OUT TO LAKE PERRIS THIS SUNDAY??

Could be an exhaust leak.

SO STUPID ME HAD THE #2 AND #4 SPARK PLUG WIRES CROSSED, I PUT THEM WHERE THERE SUPPOSED TO GO AND EVERYTHING RAN FINE. WASNT ABLE TO GO TO PERRIS, I DIDNT KNOW EVERYTHING ABOUT THE INSPECTION. I WASHED MY FLOAT TOY THE NIGHT BEFORE, SHE WAS A LITTLE DAMP AND DIDNT PASS THERE MUSSEL INSPECTION....GUESS I SHOULDVE DID ALL ME RESEARCH!!!