speedo cable removal

Hello gang !! I have a couple Qs about my 1995 tearazz 3.0v6

1- when I first it up cold or hot there' a kind of sucking sound coming from th erear of the car.I suspect it's the feul pump.Does this sound familiar?Also, does this mean the pump is ready to expire?

2- my speedo is noisy.The needle bounces a bit and makes the scraping sound.I'd like to remove the center cable and re lube it.If I look behind the motor I can see where the speedo cable couples onto another cable.What's the proper procedure to separate the coupling? I'm ass-u-meing it's like most speddo cables in that the center core can be slid out to be lubed or replaced.

Thanks

You got it. Just loosen the connection.