Glowing Exhaust Manifolds 1992 454 TBI 7.4L P30 Motorhome

[billygraves]

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[Kaweh]

Yes there are some things that can help. Without EGT and A/F ratio readings how is anyone suppose to help?

What is EGT and A/F?
I use AC Delco when possible and available. I've done pretty much all of the labor myself and I have owned this vehicle for the past six years.