not starting tach not moving

[rx7 FC TII]

alright. not really sure whats going on. the car was running decent up till mon night when i drove back to tuscaloosa from birmingham. car was pretty bad on the hills and was bucking alot.

i got home shut it down and came back later to head to a friends and couldnt get it to start for a while. finally got it started and it ran the same as before but the bucking had gotten a little bit worse.

i have an rtek 2.1 but my palm pilot is dead so i cant check it till i go home and get the cable.

mon night when i got it to start the tach wouldnt even move. after i shut it down last night it would start right back up twice and the tach worked. now nothing. the tach doesnt even move when i try to start it.

any ideas?