Failed emissions - ZR-1 Net Registry Forums

gen2rt · 10-28-2016

94 zr1 with haibeck top end work. Headers, no cats.

Passed everything except the hc at idle. Allowable limit is 220. Tested 3 times, read 561, 260, and 461.

Car sat for two years, I think I've run most of the bad gas through it, currently on second tank of fresh gas, added fuel system cleaner to both fill ups. Only issue with the way it runs is an off-idle stumble.

Ideas?

Thanks,
Jack

10-28-2016	#1
gen2rt Join Date: Oct 2010 Location: NV Posts: 38	Failed emissions 94 zr1 with haibeck top end work. Headers, no cats. Passed everything except the hc at idle. Allowable limit is 220. Tested 3 times, read 561, 260, and 461. Car sat for two years, I think I've run most of the bad gas through it, currently on second tank of fresh gas, added fuel system cleaner to both fill ups. Only issue with the way it runs is an off-idle stumble. Ideas? Thanks, Jack __________________ Reno, NV