I have this 2.6 engine that I replaced fuel injectors that I had in storage for a long time cuz the old ones were leaking fuel -replaced airflow senc. - distib. cap and rotor I have fairly new plugs but old wires- my prob. is when I start it up in the morning on a cold engine it stumbles a lot till its fully warmed up then seems to run as it should at operating temps all day . I did not check Compression with a good gauge yet. My ? is does anybody know what could be wrong here?