New spark plus have rust on them?
 

After putting on my new GT-40 heads, I pulled my plugs and noticed they all have a rust look to them, it will wipe of but what is this from? I'm using the Fel-Pro 1101-2 head gaskets. There is no coolant leak, oil looks fine,ect... The heads,plugs, new gaskets, ect... only have about 20 miles on them. The only thing that I did different was run some VP racing fuel, could that cause this? The car runs fine other then that. Everything is dusted in the rust coating including the white porcline peice and electrode. I will post some pictures later to day when I get them. Thanks

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87 GT, 4 inch cowl hood,17x9 Cobra R's/255/45's,GT-40 heads,long tubes headers,h-pipe,Flows,BBK cold air, Mass air,70mm MAF, 1.7's, 1" spacer,underdrive pulleys,Pro 5.0, King Cobra, Adj. fuel Reg., Lakewood Lift Bars,50/50's,subframes, 4.10's.
Best time 12.96
Best MPH 103.42
Best 60' 1.695

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[This message has been edited by 93CobraR (edited 05-17-2001).]

That's usually the additives in winter gasoline. Nothing to worry about.

There is no winter gasoline in it. There is was about a quarter of a tank from last summer and I added a 3 gallons of the VP racing fuel, thats the only thing I can think of that would cause this, other then water getting in the cyclinders, but how? Thanks

[This message has been edited by 93CobraR (edited 05-17-2001).]

They look fouled to me (MMT Fouled)
MMT is a anti-knock additive used to replace lead.
If it's running fine, just clean them and re gap them.
What kind of gas do you use?

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Joe!
1988 GT, 167,000 miles!!! 13.58@105mph Check out my listing! Click here! Or my website:
www.joe4speed.com
1999 Ninja ZX-6R 10.32@135mph!
1993 Olds Eighty Eight LSS 16.40@88.8mph

Duh, now I see what kind of fuel you're using... switch back and see if it clears up after a few tanks and cleanings! http://www.mustangworks.com/msgboard/smile.gif

Looks like it might be a case of high speed glazing. Since you were using a higher octane gas, it burns hotter and the glazing occurs from higher temperatures on acceleration. Try using colder plugs next time.

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Blueneonman - '95 5.0L Mustang GT Convertible | K&N Custom Cold Air Intake | FMS 9mm Wires | Hollow Cats | Flowmaster 2 Chambers | BBK Subframes | 6-pt Rollcage | 14deg Timing | King Cobra Clutch | FMS Adjustable Clutch Cable | Coolest Neon Lighting on a Mustang EVER!

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Best time: 14.578 @96.20mph

That looks nothing like high speed glazing to me. High speed glazing looks like a white powdered coating from burning too hot.


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'82 GT 351W C-4,BBK headers,Carter 625 carb,Comp.Cam,Flowmaster exhaust.
1988 GT...T-5,bone stock

OK, thanks everybody!

Refer to a Chilton book, and it will show you pictures of spark plugs, your plugs look exactly like the mmt fouled ones!! Check it out!