Suzuki: Sidekick Starting Problems, fuel pump relay, punp

Question
QUESTION:  I have 93 sidekick that has a starting problem.The fuel pump relay clicks rapidly at first,and then slows down to a stop and usauly starts but not always.When it does start it runs perfectly doesn't stall and has lots of power and the problem doesn't happen until I turn it off and try to start it again.

ANSWER: I suspect the relay, but I would not discount the quality of power supply, and ground quality.  The clicking is very often a symptom of power or ground issues.
scotty

---------- FOLLOW-UP ----------

QUESTION: Thanks scotty, I have checked the grounds and voltage,when I increase the voltage slightly with a battery charger the fuel pump makes a slightly different sound and the relay stops clicking and the engine starts.Would the fuel pump be getting weak? (120,000 plus miles on the rig)

Answer
The relay is merely a magnetically operated switch.  There's a fault in either the relay, it's wiring, or the "signal" from the ECM that actuates the relay (as I remember, the ECM grounds the magnetic coil, thereby creating the magnetic field that pulls the contact points together).  You can check the pump either with a ammeter,(usually an older punp draws more amperage as it wears out) or the amp trace with an oscilliscope,(which is something best left for those who have already compared a known good pattern to the pattern of a pump that is failing)
Bypass the relay at it's contacts, and the pump should run every time if it's ok.  I still maintain that the clicking relay is a symptom of your problem.  Find the cause of the clicking, and you've solved the problem.
Do you have an electrical diagram of the fuel system (fuel injection)?  You need one to know where the grounds and power supplies are.  It's not always just a case of battery connections.  If the ECM has power or ground problems, that could be responsible for the clicking relay.
scotty