2 days ago i changed my plugs from denso iridiums to the NGK 7 serie. Before my plugs were a tannish brown color and now with the ngk's gapped at .30 they are very white. Is there anyway to tell if my car is burning oil or running lean? Any other turbo LS guys out there having about the same problem?

 

If they are white you are running lean like a bright white? thats not good listen for knock.

 

Well should I try using the Iridiums again? Well the electrode is white and the plug base/threading is a black carbon colaration.

 

They should be brown on the tip and black towards the bottom. Did you ever hook up that inline pump?

 

if they are new plugs it takes a while for the color to set in. everytime i change plugs its always like that....a few days after the brown would start to come in.

or maybe my car is just stupid

 

i know my car are either black or white from the get go i run my car a little rich anyways, If it ain't knockin and pingin and the whole plug isn't white you are fine i would richen it up just a tiny bit to be on the safe side.

 

Only the 190 intank

 

Off the wall question.. Have you run any race gas? that will also turn them white.

 

No

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dc4drewH &raquo;</TD></TR><TR><TD CLASS="quote">Only the 190 intank</TD></TR></TABLE>

If your running the FMU and stock injectors you have to run the inline. It is the only way you can get high enough fuel pressure for the FMU to feed the injectors. The low pressure 190 intank is not nearly enough without the inline to give you the amount of line pressure needed. I'd hook it up right away since chances are you are running lean.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nsxlr8 &raquo;</TD></TR><TR><TD CLASS="quote">Off the wall question.. Have you run any race gas? that will also turn them white. </TD></TR></TABLE>

Accually it will put a greyish glaze over everything

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nsxmatt &raquo;</TD></TR><TR><TD CLASS="quote">

If your running the FMU and stock injectors you have to run the inline. It is the only way you can get high enough fuel pressure for the FMU to feed the injectors. The low pressure 190 intank is not nearly enough without the inline to give you the amount of line pressure needed. I'd hook it up right away since chances are you are running lean.</TD></TR></TABLE>

255hl worked well for me and numerous other people

 

im having the same problem with my plugs being white, and my VAFC is set to -26% across the board with a 255 and 440cc injectors. I cant figure it out.

It does knock at idle a bit, but i always thought it was valvetrain.

 

Well I hooked up the inline earlier today and now it seems to be running bett er and my fuel pressure jumped to 70. Thanks for the help and the plug are back to be brown tipped and no knock.

 

Good deal

 

lean mean fighten machine....

oh wait haha yeah your lean