1988 Buick Skylark 3.0 litre updated

Thanks NOS so far for your suggestions.

So far: Car sat for a bit before returning to service. Replaced - Transmission, Timing chain/tensioner, water pump, Tiiming Chain Cover, spark plugs, air filter, oil and filter. I've added fuel injector cleaner and wynn's gas treatment and brand new fuel into to fuel tank.

Problems, car starts and runs for a min or two and then quite abruptly dies. At first the car ran for half hour no problem, at which time I noticed the exhaust manifolds glowing red. Hissing at fuel regulator, I believe where the regulator and O ring mate to the fuel rail.

I pulled a 32 and a 42 error codes out od the diagnostic. I am leary of the diagnostic codes as this technology in GM certainly has a reputation for being quite inaccurate. I've been told that 32 error codes come up all the time and are almost ignored by mechanics. The error code 42. I pulled the #1 plug and let engine run till it died. Spark was purplish blue and run consistently till engine died. It was trying to spark as engine was died.

I am trying to locate any vacuum leaks and replacing any possibly circumspect hosing. I'm wanting to suspect fuel system problem and/or vacuum problem.

Am I beyond internat help at this moment? Oh how I wish this thing was a diesel.