Wife's car 2016, bought new and has been a good vehicle but starting to show some age at 150K miles. Have done most reg maintenance to good end. Other than that, an alternator.
Recently replaced original injectors, in an attempt to get rid of a "hiccup" in throttling from a standstill and mussed up one of the injectors by trying to force in the fuel rail assembly. Wow did that throw a lot of dash lights. Cleared all and replaced all the injectors but this time not forcing the rail/injector assembly. Runs smooth with good power but is evidently losing fuel pressure somewhere. Did the "spray test" with some MAF cleaner, around the injectors and fuel rail, while engine running and no air leaks and no fuel leaks detected. I did not even disconnect the fuel rail when changing out the injectors- just swung out the assembly., popped old out and new in and re-seated whole thing. When cold car starts like when the fuel rail was empty- much stumbling until lit, then runs fine.
I have a feeling that when I ran the engine on the wounded injector, before (re)replacing, I may have splashed in enough fuel to ding the upstream o2 sensor, which I intend to replace, regardless, due to the high miles.
Here's the odd part- the mpg indicated is way above normal- 45 around town, 50 hwy! Actual net at the pump maths out to approx 31 mpg, which is normal.
Just drove from Vegas/LA run and it threw PO172 code but after cleared stayed off.
Thots?
Thanks much- Huff
Recently replaced original injectors, in an attempt to get rid of a "hiccup" in throttling from a standstill and mussed up one of the injectors by trying to force in the fuel rail assembly. Wow did that throw a lot of dash lights. Cleared all and replaced all the injectors but this time not forcing the rail/injector assembly. Runs smooth with good power but is evidently losing fuel pressure somewhere. Did the "spray test" with some MAF cleaner, around the injectors and fuel rail, while engine running and no air leaks and no fuel leaks detected. I did not even disconnect the fuel rail when changing out the injectors- just swung out the assembly., popped old out and new in and re-seated whole thing. When cold car starts like when the fuel rail was empty- much stumbling until lit, then runs fine.
I have a feeling that when I ran the engine on the wounded injector, before (re)replacing, I may have splashed in enough fuel to ding the upstream o2 sensor, which I intend to replace, regardless, due to the high miles.
Here's the odd part- the mpg indicated is way above normal- 45 around town, 50 hwy! Actual net at the pump maths out to approx 31 mpg, which is normal.
Just drove from Vegas/LA run and it threw PO172 code but after cleared stayed off.
Thots?
Thanks much- Huff
