Do you need a injector pump on a6.9 or can you by pass
 

Ok so I bought a 84 f250 6.9 and was told it had air in the fuel lines so I replaced the injectors and went to bleed the system and found that the guy by passed the injector pump. I'm worried this will mess up the motor or just not run any help? Do want to mess up a good motor.

?? there is no way to bypass the Injection pump .. or are you refering to the Lift pump on the Passenger side of the block ??? :humm:

I would not recommend trying to bypass the injector pump.

:td:..LOL.. not a good way to get fuel into the injectors that way .. LOL..:nope:

Ya sorry it's the lift block that's been removed. I put two new batteries in it bleed the injectors and bleed air out of the fuel filter and it fired right up I bleed the injectors with it running and haven had a problem starting it all day but it's blowing a lot of blue smoke when it's idling and if I rev it up its spits and then catches and blows huge clouds of smoke. I was thinking it's because the injectors are out of time and the injector pump needs turned down but not sure.

Your injection pump would be out of time not your injectors, seems unlikely if it has not been out, if it has been out then look at that first.

The smoke issue, blue at idle untill you step on it, then it blow black? Or a lot of blue?

It blows blue, I'm not sure what to do but I know I'm not getting rid of it I love this truck

Ok so after talking to the guy I got the truck from here's what's been done. He by passed the lift block and the water separator rewired it and put the glow plugs on a push button and he put 5 inch straight pipes on it. Not sure if putting big exhuast on it with no mufflers has anything to do with anything but don't I need some back pressure so it runs smooth

blue smoke is an indication of oil being burned.

No, Back pressure is not a factor.

I would get the truck timed, putting new injectors in will alter it and you should have it rechecked.