You are running w/o the #6 GP right?

So that cyl never got preheated and is colder than the others when the afterglo truns off. Is prob resulting in poor combustion in that cyl.

Might need to manually raise rpm's to 1k during afterglo to get that one up to temp???

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)