Am I burning lean or REALLY lean?

[2zzgtte]

My car seems to go threw spark plaus every 4,000 miles. I thought I was burning really rich because my gas mileage sucks, and it smells like it. Something isnt right though.

Last 2 times I have changed my spark plags, the seem to come out whiteish. I changed my plugs last time because my car seems to misfire when they start going bad. The last time I changed my plugs the misfiring went away. Yesterday it went away. It is back today...


I didnt think I was burning lean the first time I changed my plugs. I just thought it was the Amsoil P.I. I put in there. Well my plugs tell a different story.


http://i885.photobucket.com/albums/ac56/2zzgtte/DSC00034.jpg


http://i885.photobucket.com/albums/ac56/2zzgtte/DSC00035.jpg



http://i885.photobucket.com/albums/ac56/2zzgtte/DSC00036.jpg


http://i885.photobucket.com/albums/ac56/2zzgtte/DSC00031.jpg






Here is the one I just pulled out. I only pulled 1 out because I didnt have time to pull the rest. Going to the Wolves game. Let me know what you guys think.


http://i885.photobucket.com/albums/ac56/2zzgtte/DSC00039.jpg

(Seems like best lighting is in my bathroom...)

http://i885.photobucket.com/albums/ac56/2zzgtte/DSC00034.jpg


Here is an old one with about 3 - 4000 miles on it (right) vs. a new one with maybe 100 - 150 miles on it... (left)


http://i885.photobucket.com/albums/ac56/2zzgtte/DSC00029.jpg

[mike55112]

Get your car tuned. You shouldnt be having problems going through plugs since your setup is so basic.

[Matt D.]

Those look good to me. *shrug* Mine look the same and have probably 10,000+ on them.

[2zzgtte]

Get your car tuned. You shouldnt be having problems going through plugs since your setup is so basic.

Do you remember when we were coming back from Michigan and you said my car sounds like its burning rich? the exhaust still smells like that but my plugs dont seem to show evidence of it burning rich.



Those look good to me. *shrug* Mine look the same and have probably 10,000+ on them.


Then I wonder why they keep misfiring. Around 3 - 4000 miles they start to misfire. When I replace them, the misifring goes away. This time it didnt i guess...

[Matt D.]

Sounds like it's rich? Please tell me how you can hear such a thing.

Are your plugs gapped correctly?

[mlomker]

Sounds like it's rich? Please tell me how you can hear such a thing.

I guess if it were possible to tune using plugs then we wouldn't need afr gauges.

[mike55112]

I remember I could hear a little misfire and it smelled rich. Slap in your cams and have shane tune it

[Matt D.]

I guess if it were possible to tune using plugs then we wouldn't need afr gauges.
No, but plugs are a good indication of engine health and overall performance.

[Kevin 1G Drummer]

Those plugs look just fine to me.

[sleepydsm]

Probably needs a tune! They look a little sooty to me, I bet its too rich!

Invest in a wideband.