[richardca]

Thanks for your suggestions. Rebuilt the fuel pressure regulator but the fuel pressure is still 15 during run and drops very quicly to 0 after shutdown. The assembly was pretty dirty with buildup, looked like it may have been leaking a little bit, and most of the bolts were pretty loose. Installed a 190 degree tstat and bought some sea foam.

Took the distributor cap off and it looked pretty coroded at each of the pins but they were not torn up. Will clean out the breather holes if I can find them. Pulled all the plugs on the passenger side. They looked fine but were not tight.

Somehow I managed to burn up my coil so will replace that tomorrow.

I ordered a Bosch O2 sensor to replace the aftermarket sensor I put in last year after reading all the bad info about after market O2 sensors.

Plan on checking the coolant temp sensor and the throttle posistion sensor tomorrow.

Are there any negative effects from a bad check valve in the fuel pump besides long start time? Any other sugestions? Could a fouled CAT be causing the engine to run rich?