Well I was driving my truck the other night and all of the sudden it didnt feel like it had any power and sound completely different from the exhaust and when i would give it gas it would start cutting out some. So i made it home and parked it for the night but next morning when i started it it ran just fine while it sat there for like 20 mins but i took out down the road and it started acting up again. I stopped and raised the hood and the motor was shaking bad and you could hear it cutting out. But it really only seems to be doing it while drivin. And its not throwing any codes ANY HELP WOULD ROCK

 

how many miles, rained lately, plugs been changed recently.

my daddys truck is missing really bad and i cant figure it out, you may have seen my thread ive started just doesnt make sense

 

Sorry for the long wait. No rain and it has bout 110,000 i did a plug change right at 100,000. SO i still dont know what to do

 

Motorcraft plugs, right?

 

Also, did you use dielectric grease when you changed the plugs?

 

Motorcraft plugs is what i used and i didnt use any dielectric grease

 

When you don't get any codes, you have to start playing detective. You might want to try disconnecting the battery, wait 10 minutes or so then reconnect and see if the computer gives you any codes. I've had this happen before where there were no codes, shut down, reboot and viola, a code! Did you disconnect the negative terminal on the battery when you replaced the plugs? Sounds like it could be a pretty bad misfire and could have water in the COP's if you didn't use any grease. you said no rain but did the engine get wet at all?
If you don't get a code after rebooting, start with the plugs checking they are all tight with good connections to the springs inside the COP's then use dielectric grease when you put them back on. Cover the entire inside of the boot (use a screwdriver or something to spread it around), put the spring in the boot then pull the spring out past the end of the boot to clean any grease off the end of the spring (want good contact between the spring & the plug). Then put a thin layer of grease where the boot connects to the COP and also on the boot just under where it sits on the manifold. This will all help a lot in keeping water out of the spark plug hole and the COP.
Also, did you make sure to clean out those holes in the manifold where the plug sits before putting the new plugs in? I had a shop to a poor job of replacing plugs and when I pulled the relatively new plugs out, the threads and ends of the plugs were full of crap & the plugs ended up being the problem, but one of the last things I checked because they only had 5k miles on them (that is IF the shop really did replace them...). I used a shop vac attached to a piece of 3/8" hose to get down in those holes and get all the dirt out. Then used a rag to get out anything that remained. Little things like that can lead to hours and hours of trying to figure out the problem.... trust me.

 

You MUST use dielectric grease. You also need to torque the plugs down to 28 ft/lb to prevent loosening and blowout.

 

Have you replaced the fuel filter lately? thats what it sounds like to me..

 

Yes fuel filter was changed like 8,000 ago. Ive unhooked my battery and waitn to see if it will reset and show some codes. If not i guess time to start messing with the plugs