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97 Ford F250 5.4L 109k miles
Do you know what this noise is?
Its the rattle like noise when the engine is revving. Audio is taken right above the passenger side spark plugs which is the general area the sound is coming from. and I believe I kept the RPMs pretty low and steady.
[video width=550 height=309 type=youtube]QQEgibjzTEA[/video]Things to consider
- 109k miles
- Could possibly have a small internal intake gasket leak.
- Has 2 CEL codes. cylinder 4 misfire and P0133(bad O2 or lean/rich).
- EGR system is a little weird. Had to replace the very noisy PCV valve and the EGR vacuum solenoid makes a spinning noise for a few seconds on engine shutoff but I guess its all working ok idk.
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