spark plugs

[jtugfestiva]

What spark plug brand is everyone running?? Is anyone running the E3 spark plugs?? Some say they are great and has helped improved MPG. But those were different cars. Im running NGK V-power so far pretty good. Had a bad idle with bosh 4. THanks guys

[Team Lightning]

I'm running Bosch +2. Runs good with no issues. I've run Bosch plugs in my 90 Festiva and 98 Dakota for years with no issues

[villageidiot]

I run ngk v power in everything. When I had my shop they went in every car I did a tune up on, unless it was an old rolls, they get champion 404's. I never had good luck with bosch platinums.

[1993 festiva]

i use ngk iridium on mines runing awesome

[FestYboy]

standard copper core for me, i don't feel like changing my coil every few years. stay away from platinum plugs, as they put more load on your coil.

i'd bet Bebandit that you'd find your dodge will like AC Delcos even better than those Bosch plugs.

[Team Lightning]

I've tried other plugs. All work about the same in my Dakota although the last ones I put in were copper core instead of Platinum (they were cheaper). Still get about the same fuel mileage. Also I'm still running the factory coil on my Festiva that came new with it 21 years ago!

[Pu241]

i use ngk iridium on mines runing awesome

Do the "ngk iridium" also add more power to your already awesome mods?

[JoDan]

Autolite copper core for pretty much everything I put plugs in, except for those pesky cars they decide to put them under the intakes... BTW I used to work at Federal Mogul in Burlington where they make Champion plugs, and Champion, Autolites, AC Delco, and most manufacturer brands beside Ford are the same exact plug.

[eurotiva]

NGK cheapies here

[jtugfestiva]

wow mostly NGK and auto lights. Bosh 4 for me had a jumpy idle. Anyone running E3?? Im really thinking of buying some and returning them if i have zero improvement. At least they have a 5year warranty.

[Team Lightning]

I asked my friends at the local Autozone about the Bosch +4 plugs. They said they had a lot of complaints on them. Plats and +2 no complaints. That's why mine has +2's.

[89newb]

My under hood sticker says to gap them to. 039 - .043. My questions is what have you guys found to be the best gapping size

[TominMO]

.039 - .043

[Zanzer]

^^^ LOL :mrgreen:

I typically gap mine to the large end of the spec (.043) so the spark has a larger gap to jump and ensures ignition of the mixture... but I check my plugs quite often because it's a great way to gauge how the engine is running. You could set them to .039 if you'd like to "set it and forget it" for a while so the gap would have plenty of range to move towards the big end of the spec as the electrode eroded away over time. Or you could just use the "Goldilocks Method" and set them in the middle (.041)

[CharlieZ]

stay away from platinum plugs, as they put more load on your coil.

Honestly, I'm just asking, what's the science behind platinum plugs and the coil load?
Thanks