Good evening all, currently working on a Hitachi zaxis 250 lc. Customer changed fuel filters and can’t get it started. I’ve tried bleeding air out, cracking injector lines loose, gas rag in the intake, etc. a couple of codes coming up 157-00 and 157-15. I have no way of looking these codes up other than mother internet, so far I’ve had no luck. Any insight or direction would be much appreciated! Happy wrenching!!
Why did the customer change the fuel filters? Was the issue pre existing or a new problem since the filters where changed?
To my understanding, the fuel fill cap was left off for an extended period of time before it was noticed and ended up with a bunch of trash and debris in the tank
not a hitachi expert but codes relate to rail pressure. My guess is the fuel system was a lot more contaminated then then the customer is letting on and needs replacing. (Living in denial). If not then i would be looking for a dirty fuel can around the machine that the customer prefilled the filters with.
Yeah, I’m wondering if they got some trash up around the suction control valve or the injection pump
Are you sure there wasnt water contamination as well?
It’s very possible. However, the fuel going into the filter canisters looks really clean and not discolored from water. My concern is these codes, from what I can find, they are dealing with tank share pressure. The attachment that I have added says oil tank, but others that I have found just say “tank pressure”
This is the other one I found
Think tank could be interpreted as common rail pressure. Like i said, im no hitachi expert but my understanding is 157 - common rail fuel pressure 00 - data valid but incorrect (edit -high) -15 is same
10-4