I just got the car in a trade so basically I'm getting to deal with someone else's problem. I put plugs and wires in it when I first got it and after about 1000 miles they started to foul out. I can smell gas real strong going down the road and it backfires like someone's shooting a .22 cal rifle. It's got 44psi fuel pressure so I know it's not pressure. When I gradually climbing the Rpms sometimes it chokes up but if I floor it it'll run fine. Just wanting some ideas I've already swapped ecus with another stock one and the problem is still there. Just wanting some ideas to try

 

Check for exhaust leak using seafoam

Check mechanical timing

 

Would an exhaust leak really make it run that ruff. Because it does have an exhaust leak

 

Lol where is the exhaust leak?

 

Check your injectors ... See if they are stock ... Or stuck open .... Are there any check engine codes ?

 

The exhaust leak is where the cat meets the header. But it's quit runnin rich all the sudden and idle perfect