[dmoore]

I got a 67 mustang with a crate engine. Just had the 1st chance to start it. Did not go at I wanted, never does. Timing was not right. Had some backfire. I am now close with the timing and the car started pretty good. After the car ran a little it seems hard to start and keep running. Everything was new. Just wondering if I should be looking at the plugs since the car is having a rough time starting and staying idled now. Will backfire cause my plugs to go bad. I am thinking about having a shop take over at this point but it seems wrong since I did the whole car myself.

Just looking for some direction.