Hello guys! Hope everyone is doing well.
I am working on a 2009 UD2300 with a Hino J08E engine. I'm hoping some of the Hino experts can help me out here. The truck is dealing with a loss of power. The issue has been happening for a few months now. The truck was taken to a shop that scanned it and basically deemed there was at least 1 injector that needed to be replaced but suggested we change all 6 of them. We purchased 6 non brand injectors and had them installed. For awhile the issue had been resolved but after a couple months its back to barely being able to climb hills unloaded.
The truck starts up with no issues, the fuel filter was replaced less than 3 months ago. We cracked the injector lines and 2 weren't getting any flow through the dampers. The common rail and all the flow damper were pulled and cleaned. There was some debris found in the common rail. Everything cleaned up nicely though, we put it back together and 2 of the dampers were still not flowing. We ordered 2 dampers and replaced them. I believe we had all 6 flowing if my memory serves me correctly. Took the truck on the road and same issue, no power.
I cracked all injector lines behind the flow dampeners and they were all spraying. I then cracked all 6 lines on the injectors themselves and only 5 were spraying. Going back I cracked the line by the dampener that was spraying earlier but it no longer sprayed any fuel. Then I double checked the 5 other injectors and another stopped spraying fuel. That makes 2 cylinders that weren't getting fuel. I cracked one more line, it sprayed and the truck shut off.
I tightened all the lines, pumped the hand prime on the filter and she fired back up, check the damper that stopped working and it started to spray again. What is going on? I'm curious if maybe there is air pressure getting trapped and perhaps there is a specific order of cracking the lines to get all the air out? Any input would be greatly appreciated!
I am working on a 2009 UD2300 with a Hino J08E engine. I'm hoping some of the Hino experts can help me out here. The truck is dealing with a loss of power. The issue has been happening for a few months now. The truck was taken to a shop that scanned it and basically deemed there was at least 1 injector that needed to be replaced but suggested we change all 6 of them. We purchased 6 non brand injectors and had them installed. For awhile the issue had been resolved but after a couple months its back to barely being able to climb hills unloaded.
The truck starts up with no issues, the fuel filter was replaced less than 3 months ago. We cracked the injector lines and 2 weren't getting any flow through the dampers. The common rail and all the flow damper were pulled and cleaned. There was some debris found in the common rail. Everything cleaned up nicely though, we put it back together and 2 of the dampers were still not flowing. We ordered 2 dampers and replaced them. I believe we had all 6 flowing if my memory serves me correctly. Took the truck on the road and same issue, no power.
I cracked all injector lines behind the flow dampeners and they were all spraying. I then cracked all 6 lines on the injectors themselves and only 5 were spraying. Going back I cracked the line by the dampener that was spraying earlier but it no longer sprayed any fuel. Then I double checked the 5 other injectors and another stopped spraying fuel. That makes 2 cylinders that weren't getting fuel. I cracked one more line, it sprayed and the truck shut off.
I tightened all the lines, pumped the hand prime on the filter and she fired back up, check the damper that stopped working and it started to spray again. What is going on? I'm curious if maybe there is air pressure getting trapped and perhaps there is a specific order of cracking the lines to get all the air out? Any input would be greatly appreciated!
