Car will not start many new parts and there are no mechanics here there are none in this part of Mexico?

Gas goes to engine turns over won't. Start, new parts almost completely, carburetor no gas past injection intake connection, it fires if I put gas into intake, has spark.

Turns over fast, bought it this way, sometimes won't turn over, started a little first day I added gas, seems to have new timing belt, injector plugs, many parts, backfire if I put gas in intake not sure reason, does start then a second,

The original owner gave up, but they did a lot of work, it's simple but complicated. Computer was out of dash possible they checked it, timing is not adjustable but seems fast, even shakes car if I turn over a lot.