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Wayne, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 9449
Experience:  worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling
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I did the top end of a n14 select it had a bad head gasket,

Customer Question

I did the top end of a n14 select it had a bad head gasket , it ran great test drove ,used the jake and everything was fine , drive took it to day and on the highway you can see oil spots and it ran out of oil, also smells like there is diesel in the oil
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Wayne replied 1 year ago.

Hi I'm Wayne

I will help you with this

that sounds like the injector cups are leaking and the

o-rings in the injectors cut or rolled

sorry t say , but you will need to pull all the injectors again

also did you have the head maginuflux for cracks or warp

Customer: replied 1 year ago.
That would cause to oil to blow out of the breather ,when I got to the truck it read no oil on the dipstick, seams like crank case pressure ( turbo seal, bad compressor, broken compression ring ) thank you Jay
Expert:  Wayne replied 1 year ago.

Hi Jay,

Thank you for that

bad air compressor would cause coolant pressure

Yes broken piston rings would cause

Yes turbo, would blow the smoke out the exhaust side of turbo,

remove back pipe of turbo, and see if there is any play in the turbine wheel

should have none, up/down,side to side

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