need help with my spark plugs

[adrian2627]

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I just pulled these out today coz my car was bucking at wot. these are denso's bout 6 months old. the porcelane and the metal tip thingy are colored brownish/tan. i dunno what that means. if anybody can help me with this id greatly appreciate it. thanks

 

[ROOKIE1]

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I just pulled these out today coz my car was bucking at wot. these are denso's bout 6 months old. the porcelane and the metal tip thingy are colored brownish/tan. i dunno what that means. if anybody can help me with this id greatly appreciate it. thanks

Why denso ? Most will tell you to use ngk's ? Have you done a boost leak test ?

 

[ROOKIE1]

http://www.dansmc.com/Spark_Plugs/Spark_Plugs_catalog.html . How is this ?

 

[jon21388]

according to my Haynes Automotive Manual, those spark plugs look pretty normal. They just have a slight electrode wear.

 

[Purevil]

Looks like your gaps are inconsistant. Other than that your plugs are fine. I highly doubt they have anything to do with your problem.

Definatly check for boost leaks, this is generally a major contributor to "bucking".

 

[-TunedDSM-]

I would definitely re-gap your plugs at least, couldn't hurt to pick up some new ones. NGK BPR6ES's are only $10-$12 at Napa. I would then check for boost leaks and test your spark plugs wires as a start for diagnosing the bucking problem

 

[levee000]

ya i d go with ngk's and re gap also

 

[talonracn49]

wifey didnt put 87 in it for you did she? Mine did.

Also, just go with a new set of plugs to rule it out. I get mine for like 1.50 each NGK's at Advance.

 

[romeen]

As everyone else stated get some NGK coppers, 6's if you're running up to 17psi, the 7's if running more. Gap them at .028. Excessive gap CAN cause misfire under load. And boost leak testers are definately your friend.

 

[Defiant]

Find who sold you Densos for a DSM, and smack their nose. Firmly.

 

[4G63FLA]

Find who sold you Densos for a DSM, and smack their nose. Firmly.

Funny Like everyone else has said, go with the NGK's man.

 

[adrian2627]

hey guys sorry for the late reply. I did have NGK's before the densos. I couldnt find any NGKs around here so i opted to go with denso rather than putting autolites or bosch. I changed the plugs with acdelco's temporarily till i get ngks. But after the new plugs, the car quit bucking at WOT. I still need to do a boost leak test because im sure i have some leaks some where. thanks for the replies!

 

[adrian2627]

oh yeah, wifey didnt put 87 in my car, my dumbass friend did! bout 7 dollars worth b4 i caught it. i made him buy 4 bottles of NOS octane

 

[MrBoxx]

Find who sold you Densos for a DSM, and smack their nose. Firmly.

My sentiments exactly.

And those who sell Bosch platinum plugs to a DSM'er will rue the day they said platinum is better.

 

[steve]

i made him buy 4 bottles of NOS octane

That explains the deposit color.

Steve

 

[merqury]

Well it could be a boost least............but how about ## wires did u change them as well when u changed the plugs if not i wud consider doing that. and also is ## check engine light on? if so u might scan it and find if its actually a misfire and ### cylider ### it maybe an ignition coil that might be bad.

 

[Rx3]

Well it could be a boost least............but how about ## wires did u change them as well when u changed the plugs if not i wud consider doing that. and also is ## check engine light on? if so u might scan it and find if its actually a misfire and ### cylider ### it maybe an ignition coil that might be bad.

Either learn how to post intelligently, or don't bother posting. It's all in bright red when you hit reply, but in case you missed it:

Use the Spell Check, proper grammar, and Dictionary.com if necessary.

 

[oldman]

Adrian, I'm looking at a brand new NGK, not only your gaps are inconsistent, they are consistenly to wide, like .040"-.045". You need a re-gap.

 

[rabidcrow]

As everyone else stated get some NGK coppers, 6's if you're running up to 17psi, the 7's if running more. Gap them at .028. Excessive gap CAN cause misfire under load. And boost leak testers are definately your friend.

.028? recomended gap at napa was .035...just wondering what everyone thinks? i thought .035 was alittle wide, but .028 seems on the small side

 

[romeen]

.028? recomended gap at napa was .035...just wondering what everyone thinks? i thought .035 was alittle wide, but .028 seems on the small side

NAPA is wrong. Mitsubishi recommends .028"-.031" (.7-.8mm) but tons of anectodal evidence from tuners and racers in the DSM world has shown .028" to give the best results, particularly when turning up boost beyond factory intended levels. If you still need more reassurance do a search on plug gaps.

 

[Defiant]

Speaking of whipped, dead horses.