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Glitch in exhaust pocket
There's a bit of a glitch in the exhaust pocket in this capture. It's at about 144 degrees ATDC. What is that telling me? Maybe there's some carbon behind the valve or a loose valve guide or seat? [2004 GMC Sierra 2500 HD, Engine/Propulsion Waveform] [2004 GMC... Login to read more.
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| VIN | 1GTHK29U94 |
| Engine | 6.0 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2004 GMC Sierra 2500 SLE 6.0L
| VIN | 1GTHK29U94 |
| Engine | 6.0 L |
| Trans | 4-speed Automatic (Electronic) |
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