We have had our blazer about a year now. Theres always been a mild gas smell when you shut it off. Right now we are getting about 10 miles per gallon. It has the vortec v6 and Ive tuned it up. The truck runs great so Im not sure what to try next. Any ideas?

Derrick
imderrickjed@yahoo.com

bloomington, IL

Time for a fuel pressure test. If the pressure drops after the engine is turned off, you have a leak. Most likely under the upper plenium fuel injector, regulator or feed lines. Could be elsewhere but these are the most common.