Fuel smell when parked in garage - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum

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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 4.2L I-6 Engine and Drivetrain > Engine Tunes/Mods

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Old 02-12-2019, 08:05 PM
Lynchy Lynchy is offline
Junior Member
Join Date: Feb 2019
Posts: 3
Fuel smell when parked in garage

On my 03 trailblazer 6cyl had a fuel smell when the vehicle was parked most noticeable when parked in the garage. Drove me nuts trying to find the source. No visible signs of gas. No Codes. Thought it was the fuel pump leaking or the gas tank neck based on that being a common problem. Turned out I had fuel leaking from the fuel pressure regulator through the vacuum line into the plastic intake housing that has Vortec written on it. Replaced the fuel regulator problem solved.
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