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Wayne, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 8422
Experience:  worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling
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2007 Mack Rd 400 low oil pressure has new main and rod

Customer Question

400 low oil pressure has new main and rod bearing and oil pump
Submitted: 8 months ago.
Category: Medium and Heavy Trucks
Expert:  Wayne replied 8 months ago.

Hi I am Wayne

I will help you with this

I have rebuilt engines for 34+ years

Tell me what you have replaced

so we are not repeating our self

I am sorry , but I go off line at 9:30 CST

we can continue in the Am 8Am

Customer: replied 8 months ago.

new mains rods oil pump oil pressure switch oil relief valve

Expert:  Wayne replied 8 months ago.


Thank you for that

you replaced these parts for the reason of low oil pressure

or did it happen after parts

let me know ,Please

Customer: replied 8 months ago.

because of low oil pressure

Expert:  Wayne replied 8 months ago.

Thank you

2 other things tha cause low oil pressure

is a broken piston cooler nozzle

or worn cam bearings

I suggest to check the piston cooler nozzles 1st

I hope this helped you

Expert:  Wayne replied 8 months ago.


I am just following up with you

I took the time to answer your question,

Please take the time to reply to me