self_made

so, I pulled out my plugs, and they were white, that mean they were leaning out out right? anyways, how can I fix that, my cars stock, why would they be leaning out?

WICKED2

i could be dirty fuel filter and im guessing you didn't touch the timing but just check it out anyway

Desslok

TIming is probably advanced

93_civic_EX

wait wait wait, exactly how white were the plugs....were they like really light brown or were they white....if they were white that could mean that there is water getting into the combustion chamber, if they're an extremely light brown then yea the car is running extremely lean....that would only happen if ur fuel system is clogged or old....is the cel on?? do u still have power?? if all the power is still there and there isnt a noticable decrease in hp then it is possible that there is water getting into the engine, but that would only happen if there is a crack in ur head or u have a blown head gasket, but then that would also mean that the car would be over heating...does it?? how many miles are on the car?? does v-tec engage?? hope something here^ helps u with ur problem

Brolli007

if you are not using EGK plugs and have platinum plugs instead... they will be white/silvery and its normal but you should use EGK becasue platinum plugs can get damages easily and will cause missfireing, and other problems.

PS. SP turns out my ignition timing was set fin and it was my crap bosch platinum plugs causing my worries. ... no more cheap plugs for me!


[Modified by Brolli007, 9:56 AM 11/20/2002]

Desslok

Yeah, I don't think there is anything better for a stock honda motor than NGK plugs.

dochmees

What about Denso Iridium Power plugs? I used to use NGK V-Line plugs, but at the moment I`m using Denso plugs and they seems to be a little bit better.

337 GTI 1.8t

silver is a better choice for a center electrode than copper...
Thermal Conductivity W/(m-K): 407 for Silver, 384 for Copper
Electrical Conductivity MS/m: 66 for Silver, 57 for Copper

Beru and now Nology Silverstone Spark Plugs employ silver...but shiiite, I still like NGK's in Hondas due to the fact that they are readily available. The performance difference between them and silver is negligible, especially when taking the huge price difference into account...



[Modified by GTI 1.8t, 3:37 PM 11/21/2002]

dochmees

OK which spark plug will be the best choice for slightly modified Honda engine?

At the moment Denso Iridium feels better than NGK V-Line. Also some dyno show that Denso Iridium plugs will create more power than NGK V-Line (more precise and stronger spark as the electrode is so thin).

Desslok

Silver is better but about 100 times as expensive as copper. Are they using solid silver center electrodes? And how much are the plugs ? I wasn't aware of anyone using solid silver center conductors in a plug I'll have to check on htose Nologys. Iridium and platinum are just used to last longer. Silver would have the lowest melting point so those would last the shortest. I had witnessed on a dyno peak HP jump 3 HP going from Bosch Platinum +4 to stock NGKs, both pregapped and new. I can't speak from experience about iridium, but basically for the cost of NGKs, I don't see a benefit of using anything else unless you are boosting or using nitrous, etc. I think I just paid $1.29 each for mine. If you like one better than another, go ahead and use them if you feel it is worth the money though.


[Modified by sp, 3:54 PM 11/21/2002]


[Modified by sp, 3:55 PM 11/21/2002]

337 GTI 1.8t

For a lightly modded daily driver, i like NGK v-power. The HKS Superfires or Denso Iridiums are wonderful, but, are overkill...the main advantage of the iridiums IMO is they are super durable in high stress environments like forced induction, environments where plug wear is a key issue...In ultra high performance applications, a regualr NGK v-power plug's center electrode can actually erode almost immediately, changing the gap and in turn throwing off the tune... BTW, Nology does use solid silver center electrodes and actually is rather resistant to erosion, more so than copper...

sp, jobber on the Nology Silverstones is $6.88 each.




[Modified by GTI 1.8t, 3:59 PM 11/21/2002]

Desslok

I'm going to check out those Nologys, see what the price is.
I checked and the Nologys are non-resistor.


[Modified by sp, 4:01 PM 11/21/2002]

Brolli007

I was told be my mechanic, who knows his ****, that the problem with platinum plugs and others with a very thin electrode is that they are more prone to misfire in situations where they get dirty. A thin film of oil on platinum plugs can cause them not to fire. I guess this does not apply so much to silver electrodes since they actually protrude from the porcelain but in any case, I thought the input may be helpful to some people. Maybe.


[Modified by Brolli007, 6:51 PM 11/21/2002]