plugs toast after less than 10 miles?!?!?!?

[bluedragon17]

So here is my dilemma. Put new plugs in the car cuz i lost one theoher nigh. All day car ran fin boosts pulshard no hicupp noting bad. So tonight when iigure hey im gonna go wash it start the car back it into the driveway let it warm up to temp then start driving. Go to get on it a little bit hit maybe 1psi boost and it starts surging and poping. Pulled the last thing i touched(plugs) and the electrode ground is white while the rest is black??? WTF?!?!?!? Is going on with my supra?!? help me please.

Also im full NA-T, 3" turbo back exhaust, full custom 2.5" hardpipes, RFL BOV, custom cold air intake, runnind 10 psi usually.

thanks in advance
Chris

 

[Sawbladz]

Is the car throwing any codes? Sounds like fuel cut to me. Plugs probably aren't your problem. Did you get all your clamps tight on the IC pipes?

 

[JesseH]

did you check your gap once more? and are you sure the parts store gave you the right plug, sounds like they could have gave you the wrong heat range

 

[johnathan1]

Any black smoke out of the exhaust under boost?

 

[suprabad]

My crystal ball says:
I.C. pipe popped off or is leaking and motor getting too much fuel w/ no boost resulting in super rich condition.

 

[Tun_x]

What plug are you using?

 

[Rennat]

He said hes na-t... and once he hits boost it starts to jerk and sputter.... do you have any fuel monitoring???? The AEM is only 215....


And this started AFTER you put those plugs in?????

 

[bluedragon17]

thanks for all the replies. ok no fuel monitoring all piping and clamps are compltely tight went over them like 3 times now correct plugs gapped at .028 and there NGK G-power platinums number bcp6egp(from toyota now in car) not running any where near rich no smoke no nothing heres a pic as soon as i can upload it they all look the same all 6 talked to seriously 5 differetn people about it they all say lean as hell.......

 

[IJ.]

Chris: Try the Macro setting on the Camera can't tell shit from those pics

 

[bluedragon17]

here ya go IJ my bad hope these are better

 

[bluedragon17]

i need help with this issue anyone please??? any of the mods that can chime in would help. Can someone point me in the r4ight direction.....................

 

[Sawbladz]

Ok I cross referenced the spark plug number on the NGK site. For a 7MGTE, they recommend Power Platinum BCPR6EGP gapped at 0.032. I don't know what that R changes but it might be a concern. I will look around on the site more and see what I find.

 

[IJ.]

"R" is usually Resistor

Pics look a bit lean and overheated.

 

[Sawbladz]

"R" is usually Resistor

Pics look a bit lean and overheated.

Damn, I found it and wanted to change it before I looked stupid...

Do you think the lack of resistor could cause that big of a problem? Regardless I would still change them out for the proper ones. Also, I checked and the plugs you were given don't match a 7MGE either.

 

[Sawbladz]

Found a useful link to fully explain NGK spark plug codes.

http://www.ngksparkplugs.ca/documents/partnumberkey.pdf

Local SM version:

http://www.supramania.com/forums/showpost.php?p=471693&postcount=19

 

[rakkasan]

Bad tune, too lean

 

[Sawbladz]

Bad tune, too lean

I looked through his build thread but couldn't find what he is tuning with. It does say that he would be tuning the car though.

OP: Do you have a wideband for tuning with?

 

[bluedragon17]

no tuning what so ever running off stock maps and everything like that. So obviously its fuel related correct??? but where could it be related in the fuel system........regulator,lines,filter,pump,........maybe even the boost pressure sensor no0t reading correctly?!?! god this is annoying the crap out of me. Since its all six its not just one injector and when i rev it sitting in the drive way it revs fine no problems its only under a load......

 

[IJ.]

Start at the filter it could probably do with being replaced after 20 years.

 

[bluedragon17]

yeah true true ill order that from work today. after that where should i go if it doesnt fix the problem give me a list and ill report back my findings as i fix or replace or repair them...........