2.9L backfire

[badassbronco2]

i have a 87 ford bronco2 with duel flow masters dumping right out of the mufflers and when you let off the throtle it back fires i tought it was out of time but i checked it it wasent any answers

[TigerDan]

Hi, and welcome to the forum!

I split your post and gave it it's own thread...it'll get more attention that way rather than tacked onto the end of an existing unrelated thread.

Check to see if any codes are present. If you don';t have, or have access to a code scanner, you can still check the codes without one. See here:

http://fordfuelinjection.com/?p=13

And here's an explanation of what those codes mean:

http://fordfuelinjection.com/?p=14

Also, pull the vacuum hose from the fuel pressure regulator (this thing):



and check for the presnce of fuel. There shouldn't be any. If there is, it means the diapragm inside it has gone bad and it's sucking some extra fuel through the vacuum lines, and the fuel pressure isn't being regulated properly.