hey i was wondering if any good spark plug readers could tell me what they think is going on with my engine. These plugs are appox only 2500 miles old. In that time i have done the following maintence
Oil change
new wires
New cap and rotor
new o2 sensor (before cat)
aftermarket intake
Well here it is hope someone can help

 

Ditch the bosch plugs, NGK-R's will do you just fine.

 

those dont' perform any better than NGK at all, that extra crap is just a gimmic to get you to but it

 

What moron told you Bosch +4's were a good idea? That's your problem right there. Please get NGK or Denso.

 

I think he'll appreciate that just fine

 

Bosch two and four prong plugs make many engines run like shit... oddly, Hondas run OK with them but not as well as they can.

When I bought my Stealth, it had Bosch four prongs in the front bank and two prongs in the rear bank. It misfired like no other. When replaced with NGK coppers gapped to factory specs, it ran like a champ. Stay far away from any multipronged plug (Rotary no-prong, four section plugs aside... I live to educate :chuckles: )

 

Looking at the plugs it looks like ur running rich, thats most likey b/c of the plug. I put those in my dads Dodge and it ran like crap, then i put in the cheapy Champion plugs and it ran like a dream.

 

the little bit of red is gas additive. that is normal. bosch is a no no.

 

what about o2 sensors does anyone like bosch o2 sensors or a they a no go also...but anyway thanks for the advice this is the second set that i went in less the 6k miles i thought i was running really rich also but i guess ill change them out.

 

Honda's don't like non-factory o2 sensors.