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]

rand - yes - vaccum at idel - it drops off with throttle

dave - the drawing being correct is good to know.

I was refering to the air box - not air cleaner - the air box being the metal container under the throttle body - sorry for my lack of proper jargon : )

I also have two vaccum nipples on the air box just under the TB and this is where we originally had the blue connection as per the drawing. The nipple on the TB is where we originally had the red hose hooked up.

My distributor dashpot does have a retard nipple low position and pointing toward to dist and an advance nipple top pointing away from dist.

Thanks,

Jim