What’s the problem?

This Suzuki came into the workshop with an intermittent misfire. It wasn’t evident on tickover or when I’d snap the throttle while stationary. But when I drove it any distance, I could feel it. Okay, so that’s the customer’s complaint confirmed. The next step was to connect a scan tool and check for diagnostic trouble codes (DTCs).

No codes?

Despite the misfire, no DTCs were stored. With no codes, a different diagnostic approach will be required to prove the fault. I’m suspicious of an ignition coil but I want to prove it to be sure.

Suzuki Swift No Codes For A Misfire On The Scan Tool
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