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Old 08-12-2013, 12:40 AM
09HemiCrew 09HemiCrew is offline
Dodge Ram Forum Senior Member
Join Date: May 2012
Location: MN
Age: 33
Posts: 103
Gender: Male
Vehicle: 2009 Dodge Ram
Trim Level: Laramie
Color: Brilliant Black
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 4
09HemiCrew will become famous soon enough
Default Lean on two cylinders

So, I was replacing my plugs yesterday and noticed cylinders #4 and 5 appear to be running very lean relative to the other cylinders. I have noticed a decent stumble while under load (doesn't matter if MDS is on or not). There is no CEL on. I will try to get some pics of the plugs tomorrow. They are bad enough, I can't believe there is no CEL or major performance problems. I am getting a Trinity in the next couple of days, so I will be able to do some monitoring. I am tempted to get a couple injectors or at least swap the two lean cylinders to different locations to see if the condition follows. But, I would like to watch my knock, timing, etc. first. Anyone else ever see this? Thanks.

P.S. the truck has about 85k on it. I had Autolite Iridium plugs in it for the past 10k miles. After reading about not using anything but OEM plugs, I thought maybe the Autolites where causing the stumbling.
2009 Crew Cab 4x4 Laramie - 4.56 gears, Detroit Truetrac, Diablosport Trinity
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