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]

The first thing I had time to check just recently was the fuel lines. Like Mgphoto suggested, there was a bad kink on the larger hose under the fuel tank. I had to cut the length back about 2 inches so there wasn't too much slack on the line when placing the fuel tank back down. Unfortunately, this didn't change the loss of power but it's good that I fixed that. Next up: MPS vaccuum, Fuel pump, Distributor trigger points, then valve adjustment.

[914_teener]

The first thing I had time to check just recently was the fuel lines. Like Mgphoto suggested, there was a bad kink on the larger hose under the fuel tank. I had to cut the length back about 2 inches so there wasn't too much slack on the line when placing the fuel tank back down. Unfortunately, this didn't change the loss of power but it's good that I fixed that. Next up: MPS vaccuum, Fuel pump, Distributor trigger points, then valve adjustment.

My .02.

The first thing I did with my 1.7 was go down to HF and get a cheap vacuum gauge and test the MPS to hold vacuum.

If that is not working correctly with D-jet, it will never be right.

I'd do that.

[poorsche914]

Check the FI harness grounds. Seems like that was the culprit on a 2.0 D-jet I had years ago. I never did solve the issue and sold the car cheap. New owner figured it out (IMG:style_emoticons/default/dry.gif)

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