Dylansword
01-20-2015, 10:08 PM
Ive been slowly swapping a 4d55 into my 84 d50 that has a 2.6 in it. Engine did run prier to be pulled from the donor truck, just not well due to needing a headgasket. Tried to start it today and i cant get it to run. I have replaced the headgasket and timing belts. in the process im sure the injection pump got turned. the cam and crank could have, but im pretty sure they didnt. All the timing marks lined up, all lines bleed till fuel appeared. still didnt fire. little starting fluid and it just fired out the intake. This made me suspect the cam and pump were 180 degrees off. so i flipped them 180 and still nothing. little starting fluid, and again fired out the intake. Im thinking the timing is incorrect on the cam or the pump, or both. Is the 4d55 like a gas engine, the cam and or injection pump can be 180 off? i assume so, its been a long day so everything is a little fuzzy as far as the operations of 4 stroke cycle, timing and such.
So basically now, the line have been bled, probably should do more. and the timing marks will all line up.
How do i know if the cam, pump, and crank are properly in time and not 180 degrees off? aside from the timing marks, like watching the valves etc. Any help would be great!
So basically now, the line have been bled, probably should do more. and the timing marks will all line up.
How do i know if the cam, pump, and crank are properly in time and not 180 degrees off? aside from the timing marks, like watching the valves etc. Any help would be great!