Spark plug problem... again. - Page 2 - 3000GT/Stealth International Message Center

defgh1 · 09-23-2008, 02:06 PM

Quote:

Originally Posted by donniekak

Everybody thought you were talking about the part of the plug that is actually in the combustion chamber. Looks like maybe the valve cover gasket around the plug is leaking.

Doug H

ramnakhle · 09-23-2008, 02:11 PM

Quote:

Originally Posted by defgh1

Doug H

No hehe

Quote:

Originally Posted by ramnakhle

... one of the old (bosch, previous owner) plugs had a black line along the ceramic insulator, like a very...

Sorry if i wasn't clear...

But anyways it's a CRACK. not carbon deposit from the outside. I can actually feel it with my fingernail. the ceramic is hairline cracked...

ramnakhle · 09-23-2008, 02:14 PM

and is that brown stuff around the neck normal?

thanks

donniekak · 09-23-2008, 02:29 PM

Take a picture of the other end.

ramnakhle · 09-23-2008, 02:37 PM

ramnakhle · 09-25-2008, 10:46 PM

bump....

Blue94VR4 · 09-26-2008, 01:27 PM

I would try to replace wires first.

Black_Sunshine · 09-26-2008, 08:51 PM

how tight are u torquing the plug down? looks like a stress fracture from over tightening.

ramnakhle · 09-29-2008, 05:12 PM

Quote:

Originally Posted by Black_Sunshine

how tight are u torquing the plug down? looks like a stress fracture from over tightening.

Well I didn't have a torque wrench the day that i changed out the plugs. That said i really don't think i overtightened them... at least not enough to break the damn thing... I do know blind torquing is a no no but i was troubleshooting the miss. I'm getting a torque wrench and changing out the plugs.
That said I am leaning towards the lean mixture caused by the clogged injectors what's everyone's say on that one?
Still no symptoms since the cleaning! 500 miles now.

Black_Sunshine · 09-29-2008, 05:38 PM

rule of thumb is always hand tighten, then tighten 1/4 turn by wrench. it's always worked for me.

09-23-2008, 02:14 PM	#13 (permalink)
ramnakhle EVO Terminator Join Date: Jan 2008 Location: Beirut, Lebanon Drives: '97 3000GT VR-4 Trader Rating: (0)	Re: Spark plug problem... again. and is that brown stuff around the neck normal? thanks

09-23-2008, 02:29 PM	#14 (permalink)
donniekak Forum user Join Date: Feb 2008 Location: surprise az Drives: 92rt/tt Trader Rating: (5)	Re: Spark plug problem... again. Take a picture of the other end.

09-23-2008, 02:37 PM	#15 (permalink)
ramnakhle EVO Terminator Join Date: Jan 2008 Location: Beirut, Lebanon Drives: '97 3000GT VR-4 Trader Rating: (0)	Re: Spark plug problem... again.

09-25-2008, 10:46 PM	#16 (permalink)
ramnakhle EVO Terminator Join Date: Jan 2008 Location: Beirut, Lebanon Drives: '97 3000GT VR-4 Trader Rating: (0)	Re: Spark plug problem... again. bump....

09-26-2008, 01:27 PM	#17 (permalink)
Blue94VR4 Forum Member Join Date: Mar 2001 Location: Pittsburgh, PA Drives: 94 VR4 Trader Rating: (20)	Re: Spark plug problem... again. I would try to replace wires first. __________________ 94 3000GT VR4 (upgraded) "Your 1994 Mitsubishi 3000GT VR-4 is one of 1650. There are 57 other cars that were made with both the same interior and exterior color. Exactly Identical - 8" For sale: 1. used A/C belt (10K on the belt) 2. Stock front and rear sway bars. 3. 3SX dual O2 simulator 4. Used 2'' couplers/reducers/hump hoses 5. SPEC II+ clutch

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09-26-2008, 08:51 PM	#18 (permalink)
Black_Sunshine Boost Happy Join Date: Jan 2002 Location: Bay Area CALI Drives: a japanese dodge Trader Rating: (70)	Re: Spark plug problem... again. how tight are u torquing the plug down? looks like a stress fracture from over tightening. __________________

09-29-2008, 05:38 PM	#20 (permalink)
Black_Sunshine Boost Happy Join Date: Jan 2002 Location: Bay Area CALI Drives: a japanese dodge Trader Rating: (70)	Re: Spark plug problem... again. rule of thumb is always hand tighten, then tighten 1/4 turn by wrench. it's always worked for me.