Hey guys so I have one question for you all..
I have recently been having a problem with pinging on my mazda protege5 2003, 145,xxx miles, and decided to do a seafoam treatment. I did a two can use with one in the gas tank and half of the other into the brake booster. It smoked a little. The pinging problem mostly went away and now it returned again. But anyways the pinging usually happens under load usually when in 2nd-4th gear and accelerating. Ive been trying so hard to get this problem resolved but still dont know what the issue is. usually pinging is alot louder when the temp outside is hot. I really think it might be spark plug issue and just need to change them out, but wanted to hear some prof. opinions and I really dont think its my cat, egr valve, or any wires. Please let me know cause ive been dieing to fix this and dont need to spend much money since im going to school. THANKS ALOT!!