× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: P0171/P0174 lean
Posted to Technical Discussion Forum on 10/23/2024

jack ,

often times vacuum leaks will PASS the smoke test . i would strongly suggest that carb clean is a better option if there's no visible smoke .

i would also look at the vent solenoid . the good old fashion pinch the various vacuum lines is on the tabl... Login to read more.