Medium and Heavy Trucks
Have Truck Repair Questions? Ask an Expert
hi im alex, could i have the last 8 of your vin please?
what is your oil pressure hot and what weight oil are you running?
here is the low oil pressure diag, what all did you replace/ inspect when you rebuilt it?
yeah that is pretty low did you replace the oil pressure regulator or have the oil cooler assembly off?
if you see in the pdf step 5, is the cup plug leaking?
strange you fixed the oil consumption but not the low oil pressure, where was the oil going?
tested hot? or cold
ok usually we plug in block heater to get it hot and test, if the turbo is not passing oil and you are not consuming it there must be something leaking internally when hot
230 oil temp is really hot, full load oil temp max spec is 208
oil pressure is 10psi min at idle and 72psi at full load
how did you bypass the oil cooler? do you meen the spinner filter? was that checked and replaced?
have you checked the spinner?
i assume you have
i have never heard of bypassing a oil cooler on a max 13? have you done this before? as far as i knew the plugs are never to be removed
im looking at the book and it says 208 max oil temp at full load? what book are you looking at?
wow ok, didnt know that was possible well there has to be a leak but if you are running 230 oil temp at idle that is way to hot should be in 175-190
well in the book it says max 208 at full load so 230 at idle is to hot sounds to me like you have a bad oil cooler
the thermostats open at 181 on this engine
ok yeah you said 230 and 7 psi idle
ok and you get a low oil pressure code in the ECM
the coolant temp to 230 or the oil
and how are you getting it that hot? just by driving it under load
i would get it hot, pull in shop and plug block heater in drop pan and pressure test, if you dont find a leak hot then i would replace the oil cooler, since that is not a navistar procedure to bypass the cooler i can not be sure it is bypassed, what was the oil temp with the cooler bypassed?
so before this all started the oil temp was at 230 and you had good oil pressure?
ok well the oil is to hot, i would say you do have a oil temp problem what is the coolant temp at? when the oil is at 230
no it is not like ii said get it as hot as you can and plug in block heater drop pan as fast as it can and pressure test must be a leak but why oil temp is that hot is concerning as well
im not trying to second guess you or anything just want to know all i can since im not actually working on it and only have what you tell me to go off
sounds good to me, have a good weekend
You are talking the spinner on the frame or the crank case spinner on the engine?
Should be no oil coming out of the road draft tube
There is no spec for that so I'm not sure never had that as a concern shouldn't be a alot
another thing to maybe check is the drain valve in the filter housing, if that is not fully seating it will cause low oil pressure, was there alot of metal in the pan from the bearings?