******URGENT!!!!!! s2 rb25det engine run then die and no start

[smmsak]

Hey guys ive got a question I had a timing issue and changed tensioner pulley and spring and retimed the car. She started right up and I let it run for a lil bit then took it for a cruise. I wasnt hitting boost yet and shifting about 2500 rpm just to give the car some time to get used to new things. I went about 3-4 miles, and heard a subtle pop noise. It ran for another few seconds then died. I pulled over and checked the timing belt amd stuff. All looks good. Everything under the hood looked good and no leaks under the car. Checked all plugs amd hoses everything is golden. I dunno what else it couldbe. I never had an issue like this before. Im stumped and need sime help bad!!! So please if anyone can help thank you very much. I have some random parts from rb/s14 that ill give away if I can get assistance. Please help help help :(

[ultimateirving]

Coupler popped off buddy

[smmsak]

Like intake coupler? All hoses couplers and stuff are good I pulled a spark plug out amd the plastic part cracked but only on one. Everything else is normal

[smmsak]

I found this but it was only on one plug. Could this be the issue??? It turns over. Sounds like it wamts to start theres compression just no boom.

[ultimateirving]

Yea that's a major problem. Spark plugs were over tightened. I would pull then a out and replace