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Qwimby1 · 12-14-2022, 01:14 PM

2014 FR-S, Stage 2 OFT, E85 fuel, ESC. Fuel usually tests right at 85%. This setup has been fine for 10,000 miles or so, but lately started stumbling and quits on the first cold start attempt. Always starts on the second push but runs ragged for the first couple seconds then OK. No other problems evident. I was planning to change the plugs until reading some comments about 100K or more on plugs. Right at 60K now and I'm suspecting maybe spark plugs or fuel filter. ???

12-14-2022, 01:14 PM	#1
Qwimby1 Senior Member Join Date: Nov 2015 Drives: 14 FRS Monogram, 05 Mazdasped Miata Location: Sarasota, FL Posts: 599 Thanks: 139 Thanked 150 Times in 110 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Ragged on start up 2014 FR-S, Stage 2 OFT, E85 fuel, ESC. Fuel usually tests right at 85%. This setup has been fine for 10,000 miles or so, but lately started stumbling and quits on the first cold start attempt. Always starts on the second push but runs ragged for the first couple seconds then OK. No other problems evident. I was planning to change the plugs until reading some comments about 100K or more on plugs. Right at 60K now and I'm suspecting maybe spark plugs or fuel filter. ???