Quote:
Originally Posted by Ultramaroon
Port injectors are way too tiny to make that heavy of a sound. Whatever it is, it definitely needs attention.
Mine does the same little dance at that rpm under no load. I think it's a resonance of the engine-transmission in the mounts. No biggie. That's a really subtle one. Kudos for noticing it.
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It almost sounds like excessive valve noise. Wonder if the guides either wore out or were defective from the start.