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oil pan 4 · 08-23-2011, 07:51 PM

http://ecomodder.com/forum/showthrea...p-17904-2.html

I think I found the magic exhaust valve burning A/F.

Yes an EGT might show it.
If you want to use an A/F ratio gauge a problem I see is most of the affordable A/F gauges out there only read A/F out to about 15.5:1. Slightly leaner than 15.5:1 is where I believe the valve burning happens.

08-23-2011, 07:51 PM	#33 (permalink)
oil pan 4 Corporate imperialist Join Date: Jul 2011 Location: NewMexico (USA) Posts: 11,189 Sub - '84 Chevy Diesel Suburban C10 SUV 90 day: 19.5 mpg (US) camaro - '85 Chevy Camaro Z28 Riot - '03 Kia Rio POS Team Hyundai 90 day: 30.21 mpg (US) Bug - '01 VW Beetle GLSturbo 90 day: 26.43 mpg (US) Sub2500 - '86 GMC Suburban C2500 90 day: 11.95 mpg (US) Snow flake - '11 Nissan Leaf SL SUV 90 day: 141.63 mpg (US) Thanks: 270 Thanked 3,528 Times in 2,802 Posts	http://ecomodder.com/forum/showthrea...p-17904-2.html I think I found the magic exhaust valve burning A/F. Yes an EGT might show it. If you want to use an A/F ratio gauge a problem I see is most of the affordable A/F gauges out there only read A/F out to about 15.5:1. Slightly leaner than 15.5:1 is where I believe the valve burning happens.