[ImperialCrown]

Diagnose for P0171-fuel system lean. The other codes are for evaporative emission system leaks (maybe cracked/dry rotted rubber vapor hoses) and wouldn't cause running problems.
If there is a fuel pressure test port, it would be on the front fuel rail.
If not, then you need a 'quick connect' adapter hose to go inline with the rail supply hose to connect your fuel pressure gauge. You want to see about 58 psi (+/- 5 psi) or ~400kPa.

http://www.costplustools.com/Miller-Special-Tools-6539-ADAPTER-FUEL-PRESSURE_p_9044.html

 

[Dan Phillips]

Crown,

Thanks for the tips. I'll have to see if I can hunt down the adapter.

Dan

 

[Dan Phillips]

Low fuel pressure. Starts every time now. Still won't rev over 4,000 in park. Anybody know if these things have a governor? Runs much better but still sluggish in my estimation. Will ask the owner if that is how it has been running lately.

Thanks

 

[valiant67]

Yes, there is a governor when in park.