Cracked pistons

smoketruck

Diesel fuel only
Joined
Jan 30, 2010
Messages
72
The pistons have cracks right on the lip of the bowl. Most of the cracks are less than a 1/4 inch. Should I replace them? I'm not sure how big of an issue this is. I'm also not sure what caused this.
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The truck has a exhaust brake that wasn't working right I think that it was creating back pressure that made it run hot
 
I just rebuilt an engine that had the some problem. It had 305k on it . but some of the pistons were melted. And my customer asked will that be ok! I said cracks and melted pistons don't get any better they get worse. His injectors were bad also. I think thats what caused the hot spots and melted pistons. Oh yea and the blown head gasket.
 
This truck also had a blown head gasket. The front bearing in the hx35 is totally trashed. it has about 1/2" side to side movement.
 
If you have a half inch of play in the turbo your missing some of the wheel and have bigger issues than you think.
 
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