I would like to get advice from others on which brand of plugs are best for my 95 V10,,I replaced plugs,wires,and coils about 300 miles ago on the truck I bought,,it had sat for acouple of yrs before I bought it,,I put in OEM Champion Truck plugs #3344 in it,,now I am mis-firing on acouple cyl. It might just be that this truck needs to get ran hard for more miles,to clean things up..But I wonder if there is a better plug for this engine??? Thanks for any info!!

 

Did you put fresh gas in it?

Getting any codes? If so, which cylinders are misfiring?

 

may not hurt to run some seafoam (or something equivalent) through it in the gas, or through the intake. I imagine it's got some crud built up somewhere.

 

When we dropped the tank to install new fuel pump,,there wasn't hardly any gas left in it,,and it didn't smell like varnish,,I have run about 25 gals. through it so far,and things seem to be going great ,until I started it up acouple times and let it get to operating temp in the driveway (Very cold up here) ,I didn't drive it though,,went to take it for a drive the other day and this started. just to mention,No CEL and when it did back-fire once while trying to get going,,the CEL and the light next to it ,flasded on for a second,but didn't stay on,,I have heard about the ICM runs just the 4-pack coil??? ECU runs the 6-pack coil??? could this be it??

 

Best spark plugs?

These motors usually don't care for fancy metal plugs...

Stick to copper.

 

I forgot to mention that about 150 miles ago,I was going down the road and the truck started to jerk and mis and run like XXXX,,I pulled over,shut engine off,re-started it after acoulpe mins,,ran fine then?????

 

I have noticed that the Champion truck plug is a cold plug (#9) ,where as the regular plug is a # 12..I thought that cold plug fouls out easier??? could this have happened due to just letting it run in the driveway acouple times and not getting out on the road??

 

If you have a failing module, you will lose four, or six cylinders. May or may not set a code. If it runs like crap at idle, see which cylinders are missing. If they are all on the same module.... well, you just found your problem.

 

Does the 4 coil pack run off a module that is not incorporated inside the coil pack?? This is what I have read on another posting..Thanks for the help so far also!!! Are SMP coil packs ok,,I haven't been able to find any other brand,,not real sure what brand I put in it 300 miles ago.

 

I think on yours, the coils and modules are all one piece. There are two of them, one does four cylinders, the other does six. All are controlled by the PCM. They ARE becoming difficult to find new though.... keep that in mind.