'82 Spider - car can't get above idle. Nearing my diagnostic wits end.
I've been trying to resuscitate this Spider for the past few weekends. It's a 1982 with L-jet. I took a weekend trip in the car, and on the morning of the second day, the car started to bog down badly a couple minutes after starting off. It wouldn't rev above ~1500 rpm. The car would just cut out. It will rev up on a cold start, but after 2 minutes, the car resumes its behavior. It ended up on a tow truck home.
I started down the L-jet diagnostic path, and am now a bit stymied. Here's what's all been checked:
We measured fuel pressure at the rail - 36 psi with regulator disconnected, less with it connected - exactly within spec.
Chased potential vacuum leaks and checked hoses.
Went through the grounds - cleaned, checked, and sandpapered all of them.
Replaced injector seals - even replaced the injectors while in there.
Opened up the AFM, checked and tested it. Traces looked good. Ran the car with it disconnected. No fix.
Checked & replaced spark plugs
Disconnected the exhaust at the manifold and ran the car to see if the cat was plugged. Same issue with open exhaust.
The car will still rev up for the first minute or two until she warms up. Then no go. This seems like a good clue - but I haven't been able to figure out what to do with it. Any idea where to head from here?