Spark Plug Color?
Thread Starter
Instructor
Joined: Mar 2003
Posts: 239
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From: Toronto Ontario
Spark Plug Color?
My spark plug color seems a little odd half of the plug is white and the other half is brown-black color and some times wet.I don't think its oil,I have no smoke coming out of the exhaust and dosen't seem to be running rich but
with the last oil change I noticed a smell of fuel in the oil.Car runs great
despite this problem.Fuel pressure is 32psi vac on, 42psi vac off.
Mods are 1991 convertible 350, superram, edelbrock performer heads, crane cams 2033 camshaft, 1.6 rockers, 24lbs injectors, Tpis chip
[Modified by 91superram, 2:46 PM 3/25/2003]
with the last oil change I noticed a smell of fuel in the oil.Car runs great
despite this problem.Fuel pressure is 32psi vac on, 42psi vac off.
Mods are 1991 convertible 350, superram, edelbrock performer heads, crane cams 2033 camshaft, 1.6 rockers, 24lbs injectors, Tpis chip
[Modified by 91superram, 2:46 PM 3/25/2003]
Drifting
Joined: Jul 2002
Posts: 1,273
Likes: 0
From: Olathe, KS USA
Re: Spark Plug Color? (91superram)
The plug insulater should be a tan color. The black on them could be from shuting down the engine at idle. Try warming up the engine, do some sprited driving :D then shut down the engine @ 1/2 to 3/4 throttle, allow engine to cool, then check the plugs. If any are wet you may have a leaky injector.
The wet plug may point to the leaky injector.
Fuel pressure looks ok.
Good Luck :seeya :flag
The wet plug may point to the leaky injector.
Fuel pressure looks ok.
Good Luck :seeya :flag
Thread Starter
Instructor
Joined: Mar 2003
Posts: 239
Likes: 0
From: Toronto Ontario
Re: Spark Plug Color? (C4Crazy787)
Thanks C4Crazy787
You may have a point since its happening to 3 of the 8 plugs.
The injectors are all new but it may be the seal that is causing the problem.
You may have a point since its happening to 3 of the 8 plugs.
The injectors are all new but it may be the seal that is causing the problem.
Thread Starter
Instructor
Joined: Mar 2003
Posts: 239
Likes: 0
From: Toronto Ontario
Re: Spark Plug Color? (Strick)
I dont think its the 02 sensor because it is only happening to 3 of the 8 plugs
but the funny thing is only half the plug is brown to black in color. May it be that I am using the wrong heat range on the plug (NGK FR5)
[Modified by 91superram, 7:09 PM 3/25/2003]
but the funny thing is only half the plug is brown to black in color. May it be that I am using the wrong heat range on the plug (NGK FR5)
[Modified by 91superram, 7:09 PM 3/25/2003]
Drifting
Joined: Jul 2002
Posts: 1,273
Likes: 0
From: Olathe, KS USA
Re: Spark Plug Color? (91superram)
Just a thought, you did'nt say what kind of injector's you have. I have heard
of some folk's having trouble with the new Accel injector's right out of the box.
:seeya :flag
of some folk's having trouble with the new Accel injector's right out of the box.
:seeya :flag
