Q: Running lean
Car running very lean(+20-+25) no matter the rpms. So no vacuum leak or maf iissues. maf readings are also on spec. Just replaced fuel pressure regulator a month ago. Just did a fuel pressure check and the pressure is slightly low(50psi vs in spec of 60psi) but as soon as car is shut off fuel pressure begins dropping rapidly. My first thought having a new regulator would be leaking fuel injectors. But wouldnt that cause a rich condition? And if not wouldn't it be bank specific. Fuel trims, by the way, are fairly equal on bank one and bank two.
My car has 150000 miles.
My car has an automatic transmission.
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