I Tried a ton of diffrent plugs in the past month in my Z6, the ones i have tried are. Autolite Double Platnum,Bosch Platnum +2,E3 Diamond tip,autolite copper,motorcraft coppers and Bosch platnum +4's. and let me tell you it seems like these dam platnums work well for 120 miles than has random miss fires and is verry annoying.


I paid 7.99 EACH for these E3 Diamond tip plugs their performance plugs but my friend said he sees me trying all these plugs and he said i cant go wrong with these and these are the best for me. i loved them for 1 week and 200 miles. then random miss fires. and those aren't platnum.


To me i recroment to EVERYBODY Autolite Copper Plugs 1.39 each and will perform the best.




I just wanna know why am i having these problems??? Is it normal because i have a old engine and platnums are for newer cars?

 

First off, i would NEVER run any of those plugs in my car. You need to run NGK plugs. Go to Advance Auto and pick up a set of NGK plugs. They're $1.98 a plug.

 

go ngk copper

 

yeah, doesn't sound like it's plugs. you've tried all of these and none fixed the problem. the logical conclusion: your issue is unrelated to the plugs.

i agree you should run nothing other than NGK or Denso plugs in any honda. these are the brands intended for these cars.

so why the missfire? if you're truely having a missfire, you should have a code stored in the ECU. you need to start there. it should indicate a specific cylinder or cylinders. rule things out with testing and measurements, one at a time. "troubleshooting" tends to be less expensive in the end than "throwing parts at it."

 

I agree with hondamark35. Also, Autolites are for Fords and Bosch Platinums typically are utilized in European applications. I hope your friend doesn't work for Pep Boys or something and trying to upsell you. Regardless, definately check your ECU and investigate your codes.

 

start off by getting some NGK's

 

NGK's x10

 

NGK for sure. . PErsonally I hate coppers.

 

ya, thanks!

 

i wanna know where you are finding NGK for $1.98. they are $9.99 in alabama. each

 

platinum plugs suck.

 

I am going to come out and say something that will stir some ****. I ran a ton of diff plugs since I got my car in 93 ngk, bosch, autolite, and even splitfire ( hell they where all the rage in the early 90's). I never had a plug last for more then a few 1000 miles before the car started coughing and running ruff. Every plug I pulled out showed signs of arcing from the ceramic to the nut. Bosch at some point came out with the platinum +4 I stuck them in and never had a problem with the plugs failing again I am now on the 3rd set with over 230k on the engine. I have also put these in cars before and had them run like crap. some times it is just trial and error to find a pug that works

 

i agree.

 

NGK has a few grades of plugs

NGK Copper - $1.99
NGK V-Power (Copper plug with V-cut in electrode) - $1.99 (What I run)
NGK G-Power (entry level platinum plug ($2.29)
NGK Iridium - $6.99
NGK Laser Platinum - $9.99

Run either of the NGK coppers.

Bosch plugs can go jump in a Fram oil filter and together jump in a fire, because they both suck.

 

NGK Vpower here....nothing else will run right in my D15Z1.