J30 sputtering when you hit the gas

[94 30]

Wondering if anybody can help! I got my 94 J30 smog the other week and when I got it back the engine was shaking and when you push the gas it would sputter. The car wasa running great before the smogged it They said the didn't touch anything. Has anybody had the same problem also I can hear a slight hissing soundf come from the driver side I think but can not find it.

[94 30]

No engine check light either

[GerryO]

Here's a look at only the smaller metal vacuum related lines on the underside of the plenum.



Some codes don't cause the CEL to turn ON.

[94 30]

Thanks ill pull it and check them out

[94 30]

Its weird the car was running great and as soon as they were down smogging it it had a ruff idle engine was shaking bad and as soon as i would accelerate it would sputter till i got to bout 60 mph

[GerryO]

Thanks ill pull it and check them out

Whoa, pulling the plenum is a BIG job. Just check vacuum line connections to and around the plenum, and various rubber hoses for cracks. Maybe ohm check the injectors too.