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Discussion Starter · #1 ·
hi guys ,
we just had a E350 in our shop we put injectors in it to fix a drivability isue that solved that problem.
we then got the truck back with a miss in cyl #5 found a bad brass sealing washer that allowed compression gases in and took out the lower o ring fixed all good .
The truck came back now we have diesel in the oil lots. we tore the engine down inspected all injector o rings all the sleeves in the heads all looked good we installed new o rings in all cylinders truck ran mint let it go. 2weeks later it came back >>>> yup fuel in the oil

Im thinking cracked head,

any one have comments??

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