1994 Chevy cavalier
I had just bought this cheap car it was running rough as hell like it had a bad plug or something I was driving down the road when it just quit on me so I pulled the plugs an one was fouled out so I replaced it still nothing so I changed the coil Pac now all the plugs are firing but still nothing wat else could it be besides the timing belt ?
the EGR is supposed to divert exhaust gas under deceleration..could look at the diagram but suspect a vacuum hose goes to this...replace the butyl rubber hoses that fail with Nitrile rubber hoses...you can get them from summit racing~ probably your local stores too...but would say that if your EGR were inoperative...would impair and smoke itself....like having to breathe only your own farts...sorta~
May be the EGR like Bob suggest, also change out the fuel filter and have the fuel pressure checked. May be running low, or may be a bad fuel regulator also.
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