Just finished installing my engine a few weeks ago and have been working on my brakes, installing a clutch, etc. I have only driven it in the neighborhood to check the brakes and clutch adjustment. I couldn't take it to get tuned or my state inspection yet because the brakes were not right. Anyhow, did the normal oil check, fired it up yesterday morning and it idled normal at first. Got out and went to bleed the rear brakes while running and it sounded like it stumbled for a second then started to shake real hard and idle rough. I got worried and shut it off. At this point I started to look over the entire engine for something to have come loose. Couldn't find anything so I decided to start it up to see if i could diagnose it, at this point when I started it, the car started knocking immediately like it did when I had to purchase the engine originally. I shut it off fast and will call MMR today to see what they think about it. I have no doubt of the sound and am NOT going to let it run while checking for sounds or pulling the coil packs individually because it will only cause further damage imo. Anyhow, just thought I would see thoughts from you guys on this while I await MMR to open for the day.