John -- I echo the suggestion to get a fuel pressure gauge test kit. J.C. Whitney sells an inexpensive kit. Bentley has a procedure for testing system pressure and rest pressure. It's in the turbo section (which uses the K-jet system) and it's a good procedure. I had a problem similar to what other folks have been describing -- start right up (cold start injector doing its job) and beginning the stumbling/stalling about 15 seconds later. Turned out the problem was a bad relay and harness plug for the frequency valve function. The relay lives just downwind of the battery and after 20 years of exposure to battery acid vapors its no wonder the relay was all corroded up and the plug was rotten. If it turns out you do need a new CPR, rather than buy a new one, you might want to contact IPS in Boise, Idaho. Here's the URL --> http://www.importpartsspec.com/

They subcontract with a company in California which rebuilds CPRs. I got mine rebuilt for about 1/4 the price of a new one. Works great.

Good luck.

Rob (also in the Phila. area -- must be a lot of K-jets around us -- we should form our own VCOA chapter of K-jets!)