LLY: Blown Motor Maybe

[brcinfay]

My 2005 GMC C5500 with a 6.6 was running just great the other day. Then the next day no start. I can see it looks like some oil in the water reservoir, should I think I have a blown motor?

 

[clrussell]

My 2005 GMC C5500 with a 6.6 was running just great the other day. Then the next day no start. I can see it looks like some oil in the water reservoir, should I think I have a blown motor?

No don't assume you have a bad engine just yet.. Where you in Arkansas?

 

[Dozerboy]

X2
What do you mean oil in the reservoir? Does it just look black or does it look like milk?

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[mebob2001]

Could be a turbo cracked center section. Oil cooler leaking. Could be a few things. Is there any abnormal sounds when cranking

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[NC-smokinlmm]

Is it turning over? Its an lly, probably head gaskets, if its not turning over it may have hydrolocked...

 

[unionmax481]

If it's hydrolocked don't try to turn it over you could most likly bend a rod