Starting and idle problems at 1990 3,8 SC

[Crazybill]

hello to all

i'am 27 years old and from switzerland

I buy a Ford Thunderbird 3.8 V6 Supercharched Coupe 1990

Just as the title suggests

My thunderbird has start problems.
Sometimes the engine starts without problems and also fast.
But mostly when I want to start the engine then it is running short in front but then he chokes off
Or I run and run and run but he will not run

The starter battery is new

oh and the engine speed indicator does not always work

thanks for the help

I have written this text with Google translator

sorry my english is not so good

[Cdhowell]

Sorry need a better translation. There are four things to make a motor run
1 Air Good filter, No vacumn leaks
2 Fuel Pump, filter float level etc...
3 Spark Coil, plugs, wires, etc.
4 timing Chain, Distributer, Advance weights
Test each system and you should find your problem.

[Crazybill]

Hello

ok i give my best and write myself

so the starting problem is solved and the idle is better
but still not perfect. i look continue for Vacuum leaks.

at point 4 i'am not understand what do you mean.

i have a another problem the RPM Display works not correctly

So i hope can be read this

thanks for help