If your 1998 Z71 with a Vortec engine is falling on its face during acceleration, it could be due to several issues. Common culprits include a clogged fuel filter, failing fuel pump, or a malfunctioning mass airflow sensor. Additionally, check for any vacuum leaks or issues with the ignition system, such as worn spark plugs or faulty ignition coils. Diagnosing the problem may require scanning for error codes or performing a fuel pressure test to pinpoint the issue.
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