2011 Hino 258

Jean

Active Expediter
Owner/Operator
evening is there a way to check the EGR cooler?
 
Last edited:

greasytshirt

Moderator
Staff member
Mechanic
You'll have to remove it from the truck. Block one of the coolant ports. On the other, you'll have to attach a source of regulated compressed air. Lower the whole contraption into a bucket of water and turn up the air regulator to around 20 psi and then wait. A consistent stream of bubbles means there's a leak.
 
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