Engine Stalls Under Acceleration, '72 1.7L FI / Anyone in the area to help? Options

[1adam12]

Okay, I think I'm done on this one and throwing in the towel. I've been going through the vacuum lines for over three months. I know that seems long but finding an accurate 1.7L FI California carb diagram has been like trying to find the Holy Grail. I had help from Jeff B. and put the best two diagrams together in an effort to clean things up in my engine bay.

I purchased my '72 1.7L back in April and when I first started it there was rough idle as expected but it revved. Once I started replacing the old vacuum lines I must have reversed some lines because that's when the problem started.

The car starts right up and has good idle around 2500 then drops just above 1K so I believe the cold start and AAR are working fine. When I manually open up the throttle, the engine bogs, and the rpm's drop. It's as if there engine is starving for air and doing the exact opposite when throttle is opened.

I went ahead and purchased and installed 914rubbers 1.7L TPS board and there was absolutely no change. I also rerouted some of my vacuum lines again to where I believe they are spot on.

Could the problem be my MPS or possibly Decel Valve? Anyone near the Chino Hills area this weekend? My goal is to get her off jack stands this weekend! I would love to try someone else's MPS or Decel to help me in my process of elimination. (IMG:style_emoticons/default/headbang.gif)

[1adam12]

Here are the two images of vacuum lines that I've mirrored which are closest to my set up. First one taken from Pelican site and other from Jacksun who's a member here. The only difference between the two is where they routed the small hose from the decel valve. One image shows going to manifold branch piece and the other version shows going to the AAR branch which I just ordered from 914rubber.

I've also read somewhere that it was suggested that both of the larger hoses from the decel valve should be connected to the manifold which I originally tried but I currently have the side port hose now running to 'T' connection which connects to the intake hose.

[mgphoto]

Here are the two images of vacuum lines that I've mirrored which are closest to my set up. First one taken from Pelican site and other from Jacksun who's a member here. The only difference between the two is where they routed the small hose from the decel valve. One image shows going to manifold branch piece and the other version shows going to the AAR branch which I just ordered from 914rubber.

I've also read somewhere that it was suggested that both of the larger hoses from the decel valve should be connected to the manifold which I originally tried but I currently have the side port hose now running to 'T' connection which connects to the intake hose.

Your plumbing looks to be correct, I have not seen a 1.7 with both vacuum advance and retard, could be the California thing.

I believe the vacuum nipple before the butterfly is advance, port on the vacuum can closest to the dizzy body, retard, behind the butterfly connects to the port farthest from the dizzy.

You could lose the decel valve. just cap the ports, it doesn't help your engine.