What is the correct fuel pressure regular for me 200 Chevy Blazer? on 2000 Chevrolet Blazer

Dealership found fuel pressure regular loeaking internally, they replaced fuel pressure regular with part number 19210686. Before I brought the car in I was getting 10-18 mpg city driving with A/C. Since they have worked on my car I am only getting 12-14 mpg city driving with A/C on. I looked up www.autopartswarehouse.com and they came up with different ACDelco fuel pressure regulator parts; namely AC217388 and AC172251. What can be done to get my mileage up to 16-18 mpg city driving? I have been getting that mileage since I purchased the vehicle.

by in Potwin, KS on August 28, 2013
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2 answers
ANSWER by , August 29, 2013
delco part may be an updated part number. i would trust dealer over auto club warehouse anyday
ANSWER by , August 28, 2013
check your fuel pressure should be between 60 to 80 psi