1zz injectors suit the S/C just fine - Toyota Yaris Forums

CrankyOldMan · 08-26-2015, 07:32 AM

If your MAF is clean, P0171 means an intake leak. I've had problems with the bolts on the end of the plenum coming loose and causing vacuum leak at idle and pressure leaks under boost. A bit of loc-tite red did the trick. You should also do a vapor check--get a can of carb or brake cleaner and spray a little of it along the intake components. If the engine surges, you have a leak in that spot. If you need new gaskets for the Blitz, I may have a spare set around here somewhere.

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08-26-2015, 07:32 AM	#21
CrankyOldMan 2ZR swap. DO IT! Ask how! View User's Garage Drives: 09 Meteoric Metallic HB Join Date: Feb 2011 Location: West Michigan Posts: 2,333	If your MAF is clean, P0171 means an intake leak. I've had problems with the bolts on the end of the plenum coming loose and causing vacuum leak at idle and pressure leaks under boost. A bit of loc-tite red did the trick. You should also do a vapor check--get a can of carb or brake cleaner and spray a little of it along the intake components. If the engine surges, you have a leak in that spot. If you need new gaskets for the Blitz, I may have a spare set around here somewhere.