Tweet
So, after my long endeavour with chasing a faulty fpr, it has been running beautifully ever since (about x months can't remember). Recently, on my way to visiting family, I started going lean out of nowhere on my wideband and, when trying to accelerate, it started to backfire really bad and struggled to go past 55 without downshift.
Fast Forward a day: dad and I found a vacuum leak from the coupler after the afm slightly opened and a crack in one of my hoses, fixed those up and seemed to not have the leak anymore. Still struggled to accelerate some but not as bad... But still backfires. I changed the fpr as when I disconnected it from the vacuum port idle afr was where I normally see it. Twas good on that, ran better but still rough.
Fast forward some more days: found I was misfiring in cylinder 2 because of. Spark plug looking pushed into itself and the porcelain moveable, also the wire snapped. Swapped those out and everything was immaculate! Afr was as it use to, accelerated like a dream, boosted like nobody's business. Everything perfect.
Fast forward to today: Struggled to start, when it did was ungodly lean (pretty sure my O2 couldn't read more than 22.4) and tried to die on itself. Feathered the pedal to try to keep it up and still struggled. Found a sensor that disconnected (forget which one, I think the IACV? 19mm long thing with a spring and thing; beautiful description) and got it back in and started up again.. But stayed a bit lean. Drove good and all, just cruise was more or so 18-20. Under wot was 11-12. I haven't been able to check fully as I am working and could not fully troubleshoot nor check codes.
I have Nistune, 3in turbo back, wideband and gauge, intercooler and a cone filter. I will smoke test it tomorrow in the morning for vacuum leaks to get that out of the way. If anyone has a general direction that I could be pointed towards would be appreciated.
Fast Forward a day: dad and I found a vacuum leak from the coupler after the afm slightly opened and a crack in one of my hoses, fixed those up and seemed to not have the leak anymore. Still struggled to accelerate some but not as bad... But still backfires. I changed the fpr as when I disconnected it from the vacuum port idle afr was where I normally see it. Twas good on that, ran better but still rough.
Fast forward some more days: found I was misfiring in cylinder 2 because of. Spark plug looking pushed into itself and the porcelain moveable, also the wire snapped. Swapped those out and everything was immaculate! Afr was as it use to, accelerated like a dream, boosted like nobody's business. Everything perfect.
Fast forward to today: Struggled to start, when it did was ungodly lean (pretty sure my O2 couldn't read more than 22.4) and tried to die on itself. Feathered the pedal to try to keep it up and still struggled. Found a sensor that disconnected (forget which one, I think the IACV? 19mm long thing with a spring and thing; beautiful description) and got it back in and started up again.. But stayed a bit lean. Drove good and all, just cruise was more or so 18-20. Under wot was 11-12. I haven't been able to check fully as I am working and could not fully troubleshoot nor check codes.
I have Nistune, 3in turbo back, wideband and gauge, intercooler and a cone filter. I will smoke test it tomorrow in the morning for vacuum leaks to get that out of the way. If anyone has a general direction that I could be pointed towards would be appreciated.
Comment