Hino 195 Changed Head gasket now has no Power !!

[likemlow]

Hi all,
We changed the head-gasket because it was leaking externally. Now throttle response is super slow with no power. No fault codes yet. I have Hino DX but I don't know what to look for. Any help would be greatly appreciated.

 

[greasytshirt]

Can you command the ITV, EGR, and VNT through their ranges? Does fuel pressure target and actual match each other? Is everything plugged in?

 

[greasytshirt]

It could be in limp mode. Try resetting scr history.

 

[likemlow]

Thanks greasy for the reply. I did command everything I could and actual met target on all tests. I reset all the history. We decided to swap Injectors from another truck just to see and now it's running fine. What a relief. Is there a test I could have run to find the injector problem? The tech thinks he might have accidentally done something to the injectors while they were out.

 

[greasytshirt]

The tech thinks he might have accidentally done something to the injectors while they were out.

What, like drop them on the floor? Glad you figured it out.