sounds like a vacuum leak
um start with the old compresion check jack um could be anything burt piston rings to timing being off i would suggest a complete tune up then compression check then if that's ok start checking voltage outputs of the coil/paks and ignition and emmisions controls sensors ect......AnswerIt sounds like what my '94 was doing. It ended up being the fuel pressure Common problem with 1995 4.3 w central port injection is that the injector lines and fuel regulator under the intake plenum are plastic and begin to leak and literally pour fuel through the system. I just replaced both on my 1995 s10 and it runs like new again.
Somethings you can do is take a walk and talk to your self I know that it sounds stupid but if you talk to yourself and have a little conversation then you will see that you were able to get out your frustration as well as not make the situation worse by yelling or fighting with who ever you are mad at. just cool down and think what is the problem and can I solve it
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