Hey , I gottuh go to - Xmas party - here's the AC accumulator , just to the left of that BIG plug on the cradle - it's silver.. Wires can't be to close -

 

Why cant wires be close?

 

I'm thinking you have a intake valve follower off on the dead cyl. Remove the cam cover and check. If a follower is off about 75 percent of the time the valve stem will be bent. Follower can come off from a bad lash adjuster (soft) and then bend the valve stem as the cam smacks the follower against the valve on the way off. Just a guess but i'm betting thats what your problem is. Good luck.

 

I say a compression test is what needs done, then go from there.

 

yeah im thinkin bout takin off the valve cover here soon but i looked down the oil pour tube and the cam looks fine its spinnin around fine and everything. and if that was the prob would it be a loud knocking?? its like my truck is moody it misfires when it wants to it can idle for 5 mins with no misfire then it will miss once.....then miss 4 more times and repeat the pattern. 10 secs no misfire then one...then 4 more and repeat. but ive replaced my Coil packs-spark plug-wire so its not spark. it idles fine in park. i can rev it up and it has all 8 cyl's but the second i put it in drive it misses alot! thanks for all ur advice n help guys.

 

If you’re correct that there is only one cylinder mis-firing, that should be taken into consideration when analyzing the problem.

 

nah you cant tell anything by looking down the oil fill...

 

I wonder if this might have something to do with it?

 

but if a valve stem is bent as mentioned above it would make a considerable noise i think.

 

HAHA

 

no why, that's normal Just change the oil every 3000 miles

 

lol thats my sig right now! my 2wd drive has seen more mud than it was ever intended for. and that was like 8 months ago so after i blew out the spark plugs it ran fine. then b4 i replaced the plugs i power washed it then blew out the wires again. this engine has been threw hell and a 1/2. did you know u can run a V-8 4.6L on 5 cyl's?? well ya can and i found out that the hard way i drove 4 miles on 5 cyls's hehe. now its all snowy and clean!!! ill get a vid of me driving my 7 cyls from the outside u guys are gonna love it. i get a vid of under the hood so u can hear the misfire too. i can hear it out the CAI if i put my ear close to the filter it goes POP everytime it misses and then when it back fires i can feel something hit the back of the throttle plate! haha my truck wants to die SOO bad lol.

 

That will drive the ignition nuts - I had my plugged flipped around at one time to make more room to get back to 3 & 4 and another guy along with a few others had there harness right against. The trucks missed. Some at idle , others while driving.

PKRWD - A member here posted some sort of memo or TSB from Ford about cause and effect - harness routing..

I'll look for the thread . If you've been around for awhile , you know PKRWD is definitely worth listening too .. Anyway , solved a problem I had and a few others as well - That will make it run like sh^t if your to close .

Theres a good explanation of it in here somewhere, I'll look for it in a little bit..

 

hmm weird... Please find that explanation. My main harness is pretty much laying on it...

 

I know... Just buy a diesel!!! J/k