2008 Overheating

Aspro

New Recruit
Owner/Operator
My Hino 2008 300 series truck overheats after 45 min or going up steep hills. It gurgles back into the reservoir so
we have replaced the radiator cap and also put in a new radiator but it still overheats. Will the exhaust brake valve cause any overheating issues?
 
Last edited:

greasytshirt

Moderator
Staff member
Mechanic
Are there bubbles in the coolant? Does coolant return to the radiator after it cools down? Does the fan clutch work? You have lots of stuff to check.
 
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