I am so sick and tired of working on this truck its not even funny anymore...

It started sputtering and running rough and then the CEL came on....it read cylinder 5 missfire so i cleared it and a bit later it came on again...now it reads cyl 6 missfire....

I changed plugs and wires already, checked vacuum lines. If i unplug the injector for cylinder 6 it runs rough, same thing for 5 so i can tell they're still getting fuel, what else could it be? I have 132lbs of compression in cylinder 5 and 138 in cylinder 6 so its not compression....plenum was replaced a couple of months ago...i don't know what else it could be. When i hammer the throttle it backfires like you're shooting an uzi...

thanks guys!

 

last time you checked the cap and button???

 

i'm sure its still the stock cap...

 

check cat

 

all that water in your pick comming up might have something do with it....probably took out the cap

 

id replcae the cap and rotor, then use high temp silicone on the bottom of the cap to seal out water for the future.

 

ive never thought of that...thats a good idea, and is what ill be doing in the morning, since im goin up in the woods this weekend

 

ya, since water conducts electricity, it diverts the spark from where it should be, thus making it miss. if you keep the water out, no problems. thats how alot of the gus you see that run in deep water do it, as well as relocateing their pcm, or making it water tight. as well as sealing the terminals on the battery, and alternator. that way you dont fry anything.

 

I really need to change my pic because every time i've had a problem its always been blamed on that haha that picture was like 2 years ago so its not from that....anyway, i checked compression and it really scared me....
Starting on the driver side:

Cylinders:
1: 130
3: 85
5: 110
7: 60

Passenger Side:

2: 130
4: 85
6: 85
8: 85


UH OH!!!! hahah

Also the truck is running EXTREMELY rich....

 

to check if its your rings or valves, pour about a capfull of motor oil in the cylinder, and to a compression test again. if it brings the pressure up, its your rings. did this the other day, was the rings #7 cyl, had 85lbs, then afte rthe oil it had about 130lbs.
and dodges run as follows.

drivers side
1
2
3
4
passanger side
5
6
7
8

i think ford is like you said, and i think some GMs are as well.