I am in the market for a used truck and like the duramax diesel in a 2002 crewcab truck.


I noticed when i took the oil fill cap off their was some blow by, another duramax on the lot did not have any.


My 400,000 k 6.5 turbo diesel does not have any.


Is this normal for a duramax?


The truck has 80,000 k on it and had a fifth wheel on it.


The truck lot is going to take the truck to the dealer to have them look at it (still under warrenty).


Any ideas??


Thank you!

Anyone?http://www.dieselplace.com/forum/smileys/Approve.gif

If the other truck did have the same amount of blow by it might indicate a problem. There could be cylinder wear or a problem with the crankcase ventilation system.


The maximum crankcase pressure is 4 kPa or 16 in of water at 3,100 RPM measured at the oil level indicator tube

I passed on the pickup and bought a 98 express van...........less then half the cost.


No blowby on the new 6.5 either!