Cknox121
New member
Might be because of that oil I run? The injectors checked out okay.
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Cracked Piston thread
- Thread starter Wemoy1
- Start date
Might be because of that oil I run? The injectors checked out okay.
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Stroked777
New member
nah that cylinder looks like it was run really hot, looked like coked up soot on there, like ash
Cknox121
New member
That whole side of the motor was run hot then. FWIW I was running H&S hd300 before I yoked the cab.
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Stroked777
New member
It was just one side? That definitely looks like ash from soot. That had to get really hot probably causing the piston to crack. I wonder what mine look like. I maxed out my egt reading during a pull one evening LOL I don't have excessive blow by though
Cknox121
New member
Yes. Other side had gotten hot to. But when I popped the head off the cylinders filled with coolant and washed some of the ash off.
I didn't have excessive blow by either. Truck was running great other then a blowed bellow. Wasn't until after I popped the head off that I noticed the crack. It won't be long my friend.
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Here is mine from cyl 7,I haven't seen one cracking down low like this yet. It must have just started. Lower right side of piston.
I know this is an old thread but this looks a lot line #7 in mine... Haven't took it apart yet but the bore scope should a lot of the same look . Only worse
