any ideas???

[tiberium_dj]

Have a 94 ford explorer 4.0 liter SOHC V-6, that i just picked up changed the valve cover and intake gaskets also installed new plugs and wires. I can start it fine idle is fine, motor acts fine even taking it to 2, 3, and 4,000 rpm. When I put it in drive it misses not severly but enough, it is giving out no codes and ran fine before the work just had some leaks in the valve cover. Can anyone give me a hand at what to start looking for, im thinking an injector.....

 

[Pensa]

If it ran fine before you did the work then I would guess it has to do with what you did to it. It could be a gasket not seated properly, maybe a line pulled loose when you worked on it or possibly a bad plug or wire.

As a guess I would say it's an air leak somewhere.

 

[tiberium_dj]

i assume the same thing, i tested fuel pressure, volts and amps pn the coil pack nd the wirers (havent doen anything with the plugs) the valve cover gaskets i think are fine checked the top of the head and covers for flush clean surface sealed with rtv also. I did crack a small part of the EGR line I normaly deal with street race cars so we just take the dam things off. could this be effecting anything and causing it to miss? im just suprised no codes have come up.