Hello BB-figured I'd pop over here for a little K-Jet help.

I recently purchased an 83 245 Turbo that's in pretty great shape. It looks great, was lovingly maintained, but outlived its usefulness, so it came to me for a pretty good deal.

Anyhow, the car runs great, returns around 25mpg, but has one annoying issue-it's incredibly hard to start when warm or cold.

In order to start the car, you have to be about 1/3 of the way on the throttle, crank, and if it fires, let it immediately rev to about 2,500-3,000, then sllllooooowwwwwllllyyyy back down to normal idle with your foot off the pedal. If you remove your foot from the accelerator quickly, the car will die and the process starts all over.

I have pressure tested the system-control pressure cold is about 25psi with 60*F ambient temperature, rising to 47psi when I warm up the CPR. I know this is slightly below the 50-54psi spec, but slightly low warm control pressure shouldn't influence cold starting, only warm. Line pressure (fuel return blocked) rises instantly to 75psi, as it should.

I have checked thoroughly for vacuum leaks and cannot find any. Almost every vacuum hose is brand new, and injector o-rings were recently replaced. I have sprayed carb cleaner all around the engine bay and have not found a single place that makes idle surge.

So, if my pressures are accurate, I have no vacuum leaks, and the car idles smoothly and runs normally, why is is so hard to start?