On my 1987 plymouth reliant code 27 comes up. engine starts then immediately stalls injector is cutting out.

Marvin

• 85242 Answers
• Posted on Oct 21, 2008

SOURCE: 1985 Plymouth Reliant, spark to coil and plugs will not start, fuel goes to injectors

It has to be valve timing, so check the belt, it has jumped I bet

SOURCE: 1999 plymouth neon cuts off when driving no engine light comes on

My Neon was doing the same thing. After hours of trouble shooting it turned out to be my positive battery terminal. It looked good but after replacing I have not had any problems.

SOURCE: Engine Races

sounds like a faulty idle speed sensor

SOURCE: Changing the Fuel Filter on a 1988 Plymouth Reliant

MAKE SURE KEY IS OFF USE A BUCKET AND TAKE OFF LINES TO THE FILTER YOU WILL LEAK SOME THEN REVERCE THE SAME WAY BACK BUT MAKE SURE THE ARROW IS POINTED TOWARD THE ENGINE ON THE FILTER

SOURCE: 89 reliant plymouth car stall out

You're right; It sounds like fuel delivery, but start with the simplest suspects first.
Change the fuel filter(s) first, and if this doesn't get it, go for the fuel pump.