Hello to all i have been lurking and finally decided to join.I am a member on dakotausa.com and love it there. I can only inform you to join. I have a 97 dakota sport 4x4 5.2l. I keep getting a cylinder 8 misfire and never feel the truck missing or acting poor on performance. Here is alist of what all i have done. New plenum gaskets, new NGK plugs, new msd wires, new cam sensor, new crankshaft sensor, new water coolant temp sensor, new distributor cap and rotor button, new msd 40,000 volt coil, 3 year old bosch oxygen sensors. Im at a loss. I am about to spend 200+ on maybe a msd ignition to try to bump up the crapy low voltage dodge ignition. Any help is appreciated. Here is a picture of the truck just to show you how much i love it.
truck011.jpg

 

that is an awesome truck man and welcome. can't really help but hopefully someone will chime in.

 

Welcome to the forum and great looking truck. Im going to say with everything you replaced whats left is the injector.

 

Thanks for the reply! The injectors were cleaned when i did the plenum gaskets and since then i have ran seafoam and injector cleaner threw the system.

 

I've been dealing with the same thing just mine hops between the 2,4,and 8 cylinder but j have noticed the days it does the moisture content in the air is high but I'm down to fuel injectors left I'm goign to try and have them cleaned in the next day or 2 . I seafoamed it yesterday going to see if that helps any at all.

 

whoa $hit, siiiick truck bro.

 

Hmmm Not sure ill have to sleep on this one see if anything comes to mind.

 

Im glad you mentioned that cause mine rarely but sometimes jumps around also. And like you mentioned with high humidity it seems thats when i get it also.

 

Awesome looking truch man. Do you have a suspension lift? Looks mint.

But as for your problem, I would have done everything you have and been the same spot lol. Only other than I can say is there is an electrical issue some where before the distributor, but it wouldn't make sense that only one is misfiring then... Not real sure. This is a good one.

 

Mine ran fine but had a burnt valve in cylinder 4 and the computer kept telling me of a misfire. Does the exhaust smell rich almost like you aren't getting a complete burn? If so I think you might be having the same thing I did.