swat1727

iTrader: (2)

Today i was checking my spark plugs. and when i took one of them out. i see motor oil around the plugs. not the the tip, but around it. is that normal? should i change my valve cover seal? any suggestion?

3UZFTE

I asked my friend at my dealership today and he said that the tubes that the spark plugs fit into have seals at the bottom of the tubes and have been known to leak. I know that the 3uz does not have these seals, but i'm quite certain the 2jz does, not sure, just thought i would to my best to ask around for you.

sockfocks

iTrader: (1)

The source on a 2JZ can be from the oil cap area if your not careful and spill some onto the head. In which case its not going to hurt anything.

swat1727

iTrader: (2)

thanx man!

swat1727

iTrader: (2)

that's a very good point. i need to check the rest of the plugs later. thanx

GSteg

iTrader: (15)

It seems like only the 98-00 GS400 (1UZ-FE) has spark plug tube gaskets. The 3uz-fe and 2jz-ge doesn't have any.

exodus_2

iTrader: (15)

most of the times on any vehicle when you have oil on spark plug means leaking valve cover gasket. you probably needs to change it to new one.

yusef

ooo same thing happened to me the other week, on my 1st gen gs though...the first spark plug on the front of the boot has oil around the top, but not the tip. i asked 2 technicians and got 2 answers. i wrote them down somewhere ill get back to you tomorow on that.

but they both said it could short the spark and cause a misfire.

Abear

iTrader: (1)

Valve cover gaskets..change em, its not bad, but make sure you get all the oil out before you pull the plugs, if not, then it will be bad.
If this is a 300, if a 400, I dont know.

b1ackhawk

Have the same thing on my #5 cyl of my 1UZFE. Does anyone know if 1UZFE has this same issue?