Ford 6.4L Power Stroke
6.4L compound turbo service
Diagnosing the 6.4L's twin sequential turbochargers and boost leaks.
Why this matters on the 6.4L Power Stroke
The 6.4L uses a variable-geometry high-pressure turbo feeding a low-pressure turbo. Sticking vanes or leaking boots reduce power.
Symptoms owners notice
- Low power
- Turbo noise
- Boost codes
What we check
- Boost data
- Actuator test
- Leak test
Repair work involved
- Turbo repair or replacement
- Boot and cooler repair
Trucks with the 6.4L Power Stroke
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