My 2023 Honda Civic's been making a weird whistling sound under acceleration lately, and the turbo doesn't seem to spool up as quick as it used to. Sometimes there's a slight lag before it kicks in. What are the warning signs I should look for before it completely dies on me?
Get a diagnostic scan done ASAP - that whistling combined with slower spool-up could point to a boost leak, worn compressor blades, or bearing wear, and you need to know which before it grenades on you. Beyond that, watch for blue/gray smoke on acceleration, oil in your intercooler or intake, a burning smell, or the check engine light coming on, since those are pretty much the final warning signs before a turbo completely tanks.
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