1976 2.0 question, throttle body Options

[jimkelly]

Up untill a few days ago my car was running fine but all of a sudden it started to back fire when I decelerated and starting it became difficult. One thing that has been found is the both the vaccum hoses - light blue and the red to the distributor - both pull vaccum at idle and both lose vaccum when giving the motor some throttle. The red is supposed to have little vaccum at idle and gain vaccum with added throttle - correct? We are thinking that my throttle body has gummed up hole some where but at this moment we don't know how the advance hose nipple is plumbed in the 1976 2.0 throttle body - anyone got any ideas or a detailed drawing of how the advance vaccum flows through it? Thanks, Jim

[jimkelly]

I could be mixed up but I think we determined that the red hose from TB goes to where the blue goes on the above drawing and the blue from the air box goes to where the red hose goes to in the above drawing -- and we retimed and dwelled it.

But I am still getting hard starts and back fire when letting of the throttle a when driving a decent pace. -- I have to puch the clutch in before i let off the gas peddle if I want to avoid back firing. What could me problem be? I think it is time to replace the points/condensor,cap/rotor/wires just to rule these things out. Maybe it is a bad fuel injector causing me these problems.