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Andy, Truck Diagnostic Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1571
Experience:  International trucks, International, Maxxforce and Cummins engines, diagnostic, electrical, Hvac and refrigeration repairs
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Excess blow by on a 8.3 l 350 isc 80000 miles.

Customer Question

excess blow by on a 8.3 l 350 isc 80000 miles.
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Andy replied 1 year ago.
Hi there ! My name is Andy ! Can we start with the engine serial number please?
Customer: replied 1 year ago.
family; YCEXH050CAG
ENG NO. 45986582
Customer: replied 1 year ago.
OR(###) ###-####
Expert:  Andy replied 1 year ago.
Thanks for the info ! Here is the troubleshooter for this symptom Let me know if you need anything else ! Thanks .
Customer: replied 1 year ago.
can you provide the procedure for testing the compressor and the pac brake.
i have read this a common problem with this model engine and cummins had a upgrade for it (file included) do you have a install procedure for it as i have ordered it.
Expert:  Andy replied 1 year ago.
You need special tools to test crankcase pressure . Do you have them ? You need a manometer and a special fitting with a pre measured orifice that goes on the end of the draft tube .
Customer: replied 1 year ago.
with the engine running at1500rpm i can easily cover my thumb over the blow by tube and feel very little resistance on my thumb trying to blow it off the tube.would a psi gauge work?
Expert:  Andy replied 1 year ago.
Unfortunately no ! I will send a pic of the tools needed !
Expert:  Andy replied 1 year ago.
Expert:  Andy replied 1 year ago.
I see you viewed the last post . Were you able to view the pic ok ?
Expert:  Andy replied 1 year ago.
Do you still need help ?

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