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Old 11-22-2019, 03:15 AM   #1
mswbrz
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Join Date: Aug 2014
Drives: 2013 brz limited / galaxy blue
Location: Oakdale
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Valve float after valve spring recall

Has anyone experienced any valve float after the valve spring recall ?
What are the major symptoms of valve float and how would it present ?
Having some strange issue with my Brz that is happening when the car is under full acceleration near redline, about 6k rpm my exhaust begins to sound like a blown speaker , or a bumble bee and I will feel restricted in power .
Current mods
Jrsc
Ace headers, 421
Nvidia high flow cat
Greddy exhaust

I have tried swapping out high flow cat and exhaust to rule out exhaust damage or exhaust leak and still does the same .

Sent data logs over to delicious tune and they sent me a revision , the revision made the car run rough and when nearing the redline it popped cell for misfire in cylinder 2, prior to this the Zack tune from delicious never popped a cell but was doing the sound after 6.2k rpm. Bill from delicious shared it could possible be fuel related as fuel is trying to be sent by ecu "Looks to be a fuel pressure issue, because the ECU will try to correct but maxes out on the correction it can do. "

I have ignition coils that I've been sitting on just haven't got to and the car is obviously a 13' due to recall , she has about 75 k miles . My boy is gonna help me with the coil install and possibly a fuel pump next .... just depends what data logs are showing after the coils and if coils fixed issues .

Sound recordings I've done are difficult to hear but the closest sound I've found that is similar on vids is of this video on you tube at about 10 seconds in .....




Wanted to see thoughts or ideas
¯\(°_o)/¯





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