help my only wheels and she sputters and gags at 3000+/- 500
 

alright people heres the problem. 3000 rpms she starts sputtering, almost backfires, but not a backfire. luerches and boggs out. its almost ok when cold , but the warmer she gets the worse it gets.And theres some kind of conection with the tachometer becuase it jumps and dives in unison with the car some timesthe tach. competly dies out and the problem kinda goes away.I'm sure there's something I for got but you know how that goes. Now this is what I'v done so far. checked all filters and they are good. new fule pump{4 months old} new plugs same wires. tryed to listen to the injectors but couldent here any cliking like the haynes book said. ran multimeter {just ohms}and all but the throtal sensor was good . throtal sensor was way off dont remember at moment but nowere close to sepec. and i belive I have an exust leek. I think thats everthing please help if you can

More info please.

Have you done a compression test? Sounds like signs of a weak motor about to go.