Thread: Why does my spark plug keep fouling out?

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  1. #1 Why does my spark plug keep fouling out? 
    GT Level Member taman86's Avatar
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    last time i pulled my plugs about a couple months ago, i noticed one of the ground electrodes was kinda sticky and smelled kinda funny, yes i smelled my spark plug. i mean it smelled funny cuz it didnt smell like the others lol. any thoughts?
    Last edited by taman86; 03-24-2011 at 12:41 AM.
    01 T/A WS6-SOLD
    97 grand prix gtp- flowmaster mufflers, short ram intake, SD headers (no cat), EGR delete, 160* stat, solid motor mount, AL 606's, ported TB, new coils,lifetime warranty plug wires
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  2. #2 Re: Why is my Spark Plug Sticky? 
    GT Level Member torq455's Avatar
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    How many miles? Pictures would be helpful. Otherwise, it maybe a little oil.
    2002 GTP: K&N, 3.2 pulley, flipped mounts. ZZP SS headers, 180 stat, NGK TR6's, MSD wires, Reptile ported TB, ported S/C, ported LIM, Intense Stage II heads with larger Manley severe duty SS valves, Yella Terra 1.9 full roller rockers, LS6 springs, Racetronix fuel pump re-wire, Oil pressure "kit", JMB FWI. Mustang dynoed at 240 WHP, 272 WTQ.
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  3. #3 Re: Why is my Spark Plug Sticky? 
    GT Level Member taman86's Avatar
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    well the plugs were practically brand new but the motor has about 148,000 miles, and the plug looked a little black compared to the others
    01 T/A WS6-SOLD
    97 grand prix gtp- flowmaster mufflers, short ram intake, SD headers (no cat), EGR delete, 160* stat, solid motor mount, AL 606's, ported TB, new coils,lifetime warranty plug wires
    BoostnBlackGTP>"Wbody's r cheap to do up and fix but break down alot lol"
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  4. #4 Re: Why is my Spark Plug Sticky? 
    SE Level Member kentpappy's Avatar
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    My finger is a little sticky, want to smell it?
    2000 ZX12r (Big bore kit, Cam, 6" Extension )
    1999 Escort ZX2 (DD)
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  5. #5 Re: Why is my Spark Plug Sticky? 
    GTX Level Member cerick08GP's Avatar
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    leaking valve seal on that cylinder

    Ten years of continuous driving excitement and counting!
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  6. #6 Re: Why is my Spark Plug Sticky? 
    GT Level Member taman86's Avatar
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    ah interesting
    01 T/A WS6-SOLD
    97 grand prix gtp- flowmaster mufflers, short ram intake, SD headers (no cat), EGR delete, 160* stat, solid motor mount, AL 606's, ported TB, new coils,lifetime warranty plug wires
    BoostnBlackGTP>"Wbody's r cheap to do up and fix but break down alot lol"
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  7. #7 Re: Why is my Spark Plug Sticky? 
    GTX Level Member GOTIT4CHEAP16's Avatar
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    Quote Originally Posted by kentpappy View Post
    My finger is a little sticky, want to smell it?
    Gen V, 3.0, Stage 2 heads, XP Cam, SD Headers, N*, LQ4, ZZP Stage 2 Gen 3 Intercooler, CAI, AL 104's Gapped to .055, #130 Springs, 42.5lb Injectors, ZZP Tune.

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  8. #8 Re: Why is my Spark Plug Sticky? 
    GT Level Member torq455's Avatar
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    What great advise!
    2002 GTP: K&N, 3.2 pulley, flipped mounts. ZZP SS headers, 180 stat, NGK TR6's, MSD wires, Reptile ported TB, ported S/C, ported LIM, Intense Stage II heads with larger Manley severe duty SS valves, Yella Terra 1.9 full roller rockers, LS6 springs, Racetronix fuel pump re-wire, Oil pressure "kit", JMB FWI. Mustang dynoed at 240 WHP, 272 WTQ.
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  9. #9 Re: Why is my Spark Plug Sticky? 
    I live here. SlowNA06's Avatar
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  10. #10 Re: Why is my Spark Plug Sticky? 
    GT Level Member taman86's Avatar
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    ah, well i havnt done a leak down test yet but maybe ill find a set of low milage heads and swap em out
    01 T/A WS6-SOLD
    97 grand prix gtp- flowmaster mufflers, short ram intake, SD headers (no cat), EGR delete, 160* stat, solid motor mount, AL 606's, ported TB, new coils,lifetime warranty plug wires
    BoostnBlackGTP>"Wbody's r cheap to do up and fix but break down alot lol"
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  11. #11 Re: Why is my Spark Plug Sticky? 
    GT Level Member taman86's Avatar
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    I'm bringing this back from the dead. I was talking to some guys last nite about my car running like crap and my spark plug being very fouled out and coated in a black deposit. At first I was thinking it was an oil leak of soomesort like someone mentioned above a bad valve seal or bad piston rings. Well this morning I went and started the car for the first time in four days and fired right up. I let it idle for a few minutes and turned it off, pulled the plug. So mind you I swapped the plug last friday with one from another cylinder, drove it saturday and havnt ran it till today. When I pulled the plug it wasn't black but it was wet not sticky and smelled real bad like gas. I'm prolly gunna still swap the valve seals but I'm leaning more towards the injector being stuck open. So I'm gunna get some new o rings and some seafoam and swap the injector with another one and see if the missfire moves to another cylinder. If it does problem solved and ill run the seafoam through it and see if it helps. If not well then it is an oil leak. I also did a compression test here are the numbers:

    #1- 145
    #3- 145
    #5- 142
    #2- 132
    #4- 133
    #6- 145

    For some reason #2 and 4 are the lowest numbers. To refresh the car has 145000 miles and the missfire is on cylinder number 4. I don't think those are bed numbers for such high miles. So what do you guys think?
    01 T/A WS6-SOLD
    97 grand prix gtp- flowmaster mufflers, short ram intake, SD headers (no cat), EGR delete, 160* stat, solid motor mount, AL 606's, ported TB, new coils,lifetime warranty plug wires
    BoostnBlackGTP>"Wbody's r cheap to do up and fix but break down alot lol"
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  12. #12 Re: Why is my Spark Plug Sticky? 
     

  13. #13 Re: Why is my Spark Plug Sticky? 
    GPFs Sexy Ginger. SilvaMan61's Avatar
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    i keep chuckling at the threads title
    SMGPFC Member #9
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  14. #14 Re: Why is my Spark Plug Sticky? 
    GT Level Member MBruneaux's Avatar
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    They make a cream to clear that up........
    2001 Grand Prix GTP - Daily Driver12" front brake upgrade ('05 Monte), Raptor tune, Open cone, Front and rear strut tower braces, SS brake hoses, BMR trailing arms, ZZP 3" catted downpipe, Dorman front sway bar, GMPP rear sway bar, solid trans and engine mount, flipped dog bones and Borla exhaust.
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  15. #15 Re: Why is my Spark Plug Sticky? 
    GT Level Member taman86's Avatar
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    hahaha ok, im changing the title to be a more serious of a discussion
    01 T/A WS6-SOLD
    97 grand prix gtp- flowmaster mufflers, short ram intake, SD headers (no cat), EGR delete, 160* stat, solid motor mount, AL 606's, ported TB, new coils,lifetime warranty plug wires
    BoostnBlackGTP>"Wbody's r cheap to do up and fix but break down alot lol"
    Reply With Quote  
     

  16. #16 Re: Why does my spark plug keep fouling out? 
    GT Level Member taman86's Avatar
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    so far ive read of 2 maybe 3 other ppl having missfires on cylinder 4, coincidence?
    01 T/A WS6-SOLD
    97 grand prix gtp- flowmaster mufflers, short ram intake, SD headers (no cat), EGR delete, 160* stat, solid motor mount, AL 606's, ported TB, new coils,lifetime warranty plug wires
    BoostnBlackGTP>"Wbody's r cheap to do up and fix but break down alot lol"
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  17. #17 Re: Why does my spark plug keep fouling out? 
    DUI BABY Bio248's Avatar
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    when is it misfiring?

    if it is at idle: that's normal. these cars just run rough at idle because of their old technology.
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  18. #18 Re: Why does my spark plug keep fouling out? 
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    and dumb firing order.
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  19. #19 Re: Why does my spark plug keep fouling out? 
    GT Level Member taman86's Avatar
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    no it missfires when accelerating and since its been running rough it starts rough and takes about 3-5 seconds to level out after start up usually.
    01 T/A WS6-SOLD
    97 grand prix gtp- flowmaster mufflers, short ram intake, SD headers (no cat), EGR delete, 160* stat, solid motor mount, AL 606's, ported TB, new coils,lifetime warranty plug wires
    BoostnBlackGTP>"Wbody's r cheap to do up and fix but break down alot lol"
    Reply With Quote  
     

  20. #20 Re: Why does my spark plug keep fouling out? 
    GT Level Member taman86's Avatar
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    k, well i pulled the wires off and put the number 4 plug in the number 4 cylinder wire and had my gf crank the car and it fired weak. put the same plug in the number 2 wires and it fired weak. put the number 2 plug in the number 2 wire and it fired strong and same for number 4 and it also fired strong. so i cleaned up the number 4 plug and put it all back together and started the car and it started rough like, didnt drive it but i imagine it would be doing the same symptoms. so that tells me that it isnt the wires or the coils and prolly not the plugs either cuz they are just a few months old and less then a 1000 miles on em, that one was prolly just dirty. sooooooo.........injector then? still need to get o-rings first to swap around the injectors to see if it missfires on another cylinder. uuuuughhhhhhhhhhhhhhhh
    01 T/A WS6-SOLD
    97 grand prix gtp- flowmaster mufflers, short ram intake, SD headers (no cat), EGR delete, 160* stat, solid motor mount, AL 606's, ported TB, new coils,lifetime warranty plug wires
    BoostnBlackGTP>"Wbody's r cheap to do up and fix but break down alot lol"
    Reply With Quote  
     

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