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In a TBI engine, backfiring after warming up can be caused by issues like a lean air-fuel mixture, a failing fuel injector, a malfunctioning idle air control valve, or a vacuum leak. These can lead to incomplete combustion in the engine, resulting in backfiring through the throttle body. Regular maintenance and troubleshooting of these components can help resolve the issue.

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Q: What causes an engine to backfire through tbi after warming up?
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