WHAT is going on with this car ???! (Page 4/6) Owiko JUN 23, 12:36 AM fuel pressure regulator or something like that might be broken. armos JUN 23, 03:12 AM quote Originally posted by Lou6t4gto: WHY would it pull a "RICH Code" if it's running out of Pressure ?? I'm not real familiar with the 4cyl setup, but the pressure loss could be happening somewhere that's feeding excess fuel into the engine. The rich code would be consistent with that. A properly working V6 setup takes a very long time to leak down with the key off. But I don't know how much leakdown is normal on the TBI 4cyl. I remember checking fuel pressure on a 4cyl something like 20 years ago. With key on, engine off, it went to something like 14psi, and I think it held but I don't remember how long. I certainly don't think it dropped in just a few seconds or it would have been hard to read. You must be leaking fuel somewhere. phonedawgz JUN 23, 10:38 AM So if you have someone turn on (no start) the key while you are watching the fuel pressure it does go up, but then it dissipates quickly? Correct? The fuel pressure is correct while the engine is running correct? Lou6t4gto JUN 23, 01:09 PM correct on Both questions Lou6t4gto JUN 23, 01:45 PM I Answered that Too Quickly ! if I turn On the key (not start), it Does Nothing. If I "Crank it", it will start and hold 13 PSI. As soon as the key is "Shut Off", it goes to Zero within 1-2 seconds. ** NO Pressure only turning the key to "On" Position.** Only pressure if it's cranked and running. Owiko JUN 23, 02:13 PM I wonder if it is a fuel pump issue, I hear they can become incredibly cryptic and anomalous when they begin to fail. Does the pump make noise with the key at the "on" position? Lou6t4gto JUN 23, 02:19 PM can't say I did hear it. I'll check. Lou6t4gto JUN 23, 07:42 PM If I get in the car, (cold start,) turn the key "on", the pump "buzzes" for 3-4 seconds, (No pressure). Then crank it, it will start and hold 13psi. shut it off, it immediately goes to 0. turn they key "On", it will buzz 3-4 seconds, go to about 6 PSI, then immediately drop to 0. the "Pump IS getting Current". HELP ! This is like the 3rd pump in 5 years. IS IT the PUMP ? Regulator ? (of course it has a FULL tank, so if I need to take it out.....! ) LOL Owiko JUN 23, 09:50 PM Probably the regulator then. Lou6t4gto JUN 23, 11:54 PM so, it's a 1985 duke. Anyone got a Part # for the regulator ?