I have a 1998 F-150 4.6 L acting very strange. At first I thought it was the cats but after talking to a muffler shop they didnt think it was the cats. My symptoms are the engine and whole truch are shaking, like ive got a misfire, but I dont, im getting an extreme amount of water and vapor comeing out of my tail pipes even after everything has been warmed yp and I am getting a strange ticking from the engine. And i still dont have any codes thrown. Any help would be appreciated!
-Grant

 

when is the last time you changed the plugs, plug wires, and coil packs? and what was used???