89' KA24E Shaking & noise

[highwhey_14]

I've heard of the infamous rod knock, but my engine and the entire car(due to the engine) shakes wayyy to much. I don't think it's the engine mounts since it started shaking while my bro was revving the engine today. He didn't over rev it, but he was revving it because there was a minimal amount of smoke coming out of the rear part of the area where the valve cover is and the header, and there was also a wet spot on that area of the header. Also, when I turned off the car Yesterday and Today, I heard a hissing sound - vacuum leak? Anyways, before today, the only problem was that the car bogged too much and it had a slight delay when pressing the gas pedal(would take a while for the rpms to rise). While revving the engine, it sounded like something broke inside and looked like an out of control washer machine the way it was shaking. I backed up the car and without even pressing the gas, the whole car shakes ridiculously. Also, early in the morning today, before the engine began to shake and make the ticking noise, the delay between the gas pedal and the engine grew, every time i looked at the dash board when pressing the gas pedal, the rpms would go almost to 0 and the engine sounded like it had died but then it would turn on and respond again. Very weird. The engine was recently rebuilt(~1 month ago) so I do have a guarantee from the mechanic but his shop isn't open until Tuesday.