hi all well i have a 94 mustang gt and i took the upperintake off to replace some vacuum hoses cleaned the tb , aic , egr and replaced gaskets then put all back together at idle she runs fine i can rev it up and it sounds great but when i go to drive it it spitters and sputters almost as if a plug fouled i checked all plugs and wires ect i am stumped any ideas out there any advise would be better than no advise thank you it ran fine before i took it all apart

 

Did you forget to hookup the vacuum to the fuel pressure regulator?

 

its connected

 

Be sure all your routing is correct. Some of these lines are switched vacuum, can mess with things if they're not correct.

 

did you replace your intake manifold gasket? Might also try spraying starter fluid around the lines/intake to see if maybe one of the vac lines cracked or split while you were doing this.

 

i checked all vaccum hoses and sprayed carb and choke cleaner on all the hoses everything seems fine and its still do it could it be a cracked upper intake i see no visable cracks at all could it be on the inside

 

and yes i did change the gasket

 

You're just gonna have to take the intake off again and look for things that are out of place. Something didn't go back together correctly.