Why does my Suzuki Swift engine sputter and lose power during high-speed driving?

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Why does my Suzuki Swift engine sputter and lose power during high-speed driving?

When I drive my Suzuki Swift at higher speeds, the engine sputters, and I feel a noticeable loss of power. This usually happens when I try to maintain speed on the highway. What could be causing this issue, and should I be worried about long-term engine damage?

Gari Specialist asked on 02 May 2025 17:08:15 pm

1 Answer

9 views |

Gari Master - on 02 May 2025 17:10:51 pm

Sputtering and power loss at high speeds suggest the engine is not getting enough fuel o r spark under load.

Common Causes:

Weak Fuel Pump: Can’t maintain pressure needed at high speeds.

Blocked Fuel Filter: Restricts flow when demand increases.

Faulty Ignition Coils: Fail to deliver consistent spark at higher RPMs.

Dirty o r Failing MAF Sensor: Provides incorrect air intake readings, affecting fuel mapping.

Clogged Catalytic Converter: Causes back pressure, reducing power output.

Fixes:

Test fuel pressure while driving and replace the fuel pump o r filter if below spec.

Scan for error codes OBD-II to check for MAF o r ignition faults.

Inspect ignition coils and replace any that are failing.

Check the catalytic converter for blockages if theres also heat o r exhaust issues.