hey guys, we have a Isuzu 4he1a1 motor in a cab over truck, basicly it dropped a valve an we had to do an inframe, got a new head an new turbo,an performed an inframe, removed old dry liners an replaced with new ones, an when I started it up it ran an smoked like crazy, an made a noise, then it locked down, removed the head an found that the top of liner was busted off liner had fallen down into crank an busted it all up till it locked down motor, replaced liner again an piston too an reinstalled it all back an now the motor want start an run, it starts up an shuts rite back off like ya turned key off, my shut off cable is working properly an stays in the run position when it shuts off. ya have to let it sit for a min then restart it an it runs for a sec. an shuts down again. checked fuel return to make sure that there wasn't any back pressure on return side, wasn't any, I have timed the cam shaft gear to the center of the cam shaft an the machined surface of the head with the TDC mark on crank, an the injector pump is time on the small line on the pump witch is the 8degree mark with the 8 degree mark on the crank, ya have to time the pump to the crank then turn the crank to the TDC then time the cam. seems screwed up way to time it all, unlike cat an deer an other motors all time off one turn an not 2. we never removed any of the gears on rear of motor nor the injector pump so its all correct, just removed head an replaced idler gear into new head an put back on block an sit cam shaft back into . but before the liner busted an dropped I removed what I though was the fuel shut off solenoid cause we had a hard time bleeding air outta the lines an though it was bad, come to find out I think it is a hard start or cold start advance solenoid, I pulled it outta the pump an it rides on a finger inside, an to put it back into its proper place we had to remove the cover on side of pump to put the little arms back over the solenoid tip the fit back into place properly. then we started it up an then that's when it smoked like crazy an the liner busted an fell down, so ive been going in circles trying to figure out whats going on with my motor, I think my cams timed correctly, any ideas are greatly appreciated .
2003 npr isuzu 4he1a1 motor timeing ?
