TCBRacer77
I'm Awesome
I have 1997 single cab short bed 4.3/5speed. I use this truck as daily commuter for a long time, the past year or so I’ve been running 93 octane, seems to get rid of a ping (sounds like cricket chirp) when under load accelerating, and gets way better fuel mileage. I’ve read this could be egr (which I know nothing about), or it could be wrong spark plug?? I’m running e3 diamond fire just to try. I filled up with 87 lately to try and save some money but I don’t want to keep doing this if causing issues. Any guidance in troubleshooting would help a ton!