96 f250 gas. When I step on gas only when its cold it knocks and wont accelerate. Very sluggish. Once it is warmed up no prob. This started a month ago but only did it a few times now it its every time I have done a FULL tune up and used sea foam in fuel lines ran it but still not running right.
When I tuned it (plugs, wires, filters cap, rotor) it ran so great. Then it started feeling like it was running out of fuel and knocking but this did not happen every time. Now it is doing it every day but once it gets warmed up no problem?
have the same problem?
Thursday, December 29th, 2011 AT 9:32 PM