'91 740 with No "cycling" sound prior to starting

[TommyB]

My 91 740 non-turbo used to start with ease but now if cold it is slow to start. It has new plugs, dist. cap and rotor. Prior to this problem there was a clear sounding of something "cycling" under the hood when you turned the key to start the car. I assume this is fuel related such as a pump of some-kind that gives fuel to the injectors prior to the start. This sound has gone away. Can anyone tell me what to look for and how to fix this issue?

[billofdurham]

There is a start injector controlled by a thermal timer. If either of these has a fault it makes cold starting harder. Not sure if you would hear a cycling noise but it is possible.

Bill.