Popeye775 16 Posted January 3, 2021 Hey guys just a question to gain knowledge:How can the bad piston rings in a couple cylinders cause lean running conditions? I’m just curious as to how these would cause that i guess. Thank you guys for all the helpSent from my iPhone using Tapatalk Quote Share this post Link to post Share on other sites
Popeye775 16 Posted January 14, 2021 Hey guys, For anybody still following this thread, i made some headway. I replaced the ECU vacuum with OEM vacuum hose. It helped a bunch actually. Cruising around 2k RPM the car runs at ~14.8 AFR. When I’m driving and come to a stop, it will stay at about 14.5-14.8 AFR for a second but then slowly creep up to ~16-17.5 AFR. WOT is around 13.5-14 so still a little lean. I haven’t pulled plugs at WOT in a bit so I’m unsure if it’s just an exhaust leak causing my wideband to freak out or not but any opinions from anybody still following this thread? Sent from my iPhone using Tapatalk Quote Share this post Link to post Share on other sites
