Buick LeSabre fuel smell in cabin with crank no start and inaccurate gas gauge after three fuel pump replacements on Buick LeSabre

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Buick LeSabre owners report experiencing a fuel smell in the cabin, which may indicate a fuel leak, even without visible signs on the ground. Additionally, they report issues with a crank but no start condition, which could be linked to excessive fuel pressure causing a rich air/fuel mixture and triggering the check engine light. Owners are advised to check the connectors at the fuel lines on the injectors and from the tank to the fuel filter for leaks or corrosion. Furthermore, some owners find it necessary to verify spark at the plugs and check fuel pressure when facing starting issues. A faulty Mass Air Flow (MAF) sensor has also been noted as a potential cause for the no-start condition, prompting some to unplug it to test if the vehicle starts. Given these recurring issues, it is crucial for owners to thoroughly inspect these components to effectively diagnose and resolve the underlying problems.

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