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Old 02-07-2022, 10:40 PM   #1
uDasBoot
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Join Date: Jan 2022
Drives: 2013 Scion FR-S
Location: Birmingham, AL
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Occasional misfire and Clacking/clicking sound.

So, I just purchased a turboed 2013 FR-S with 80k miles. I've noticed on cold-starts and at idle an occasional misfire. It happens once and only once around every 1.5-2 minutes. I also started hearing what seems like a clacking/ticking/clicking sound coming from a cylinder after it idles down . (On cold start idles around 2500 then calms to 950 after about a minute, not sure if this is stock, or a tuning thing). While messing around with me P3 gauge, and clearing the codes (there were none stored or active before I did this), I noticed the sound go away and then come back 30 seconds later. As you can probably tell, I don't know a ton about this car, especially with the aftermarket turbo kit (Avo turbo kit). I do know it's limited to about 8 psi of boost at max, and that its fun to drive. Any suggestions on what this could be? I'm thinking maybe a fuel injector going bad? I do also know the valve spring recall hasn't been performed yet, could it be an indicator of a spring going bad? Tomorrow morning I will take a video and post the sound, if I can post videos, I'm also fairly new to this forum.
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