16 Hino lack of power

garc2801

New Recruit
Mechanic
Working on a 16 Hino 336, lack of power have to press on the acc pedal and brake pedal to move. No check Eng light on no codes, replaced fuel filters
When going uphill while monitoring fuel pressure is at 25K psi boost pressure is at 34 lbs. When release brakes or when is at flat pressure boost and fuel pressure start coming down and start losing power.
 
Last edited:

greasytshirt

Moderator
Staff member
Mechanic
There is something wrong with one of the brake switches. The two switches have to sync before the ECU allows any real power. Like one is wired backwards or something. Or the wrong parts installed. When did this problem start?
 
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