Spark plugs supposed to look like this? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

onesicklambo · 12-13-2007, 09:09 PM

my car started a bunch of times..then all of a sudden didnt start. WTF I pulled the plugs to check for spark and they look like this.

RUnning really rich??? They have been in for aprox 15miles which is all my motor has gone. I steel wooled the black stuff off and still wont start! There is spark from all coil packs. Is there any other diagnostics? TPS @ .5v. When I turn the CAS is there suppose to be a noise like injectors pumping? Help

: btw they looked like they were very oily..maybe it was just gas?

duffman1278 · 12-13-2007, 09:18 PM

is that a 510 that I see???? Looks niiice

AsleepAltima · 12-13-2007, 09:21 PM

for whatever reason, youre running very rich.
do you have the pressure on the regulator set correctly?
is this a recent thing?

onesicklambo · 12-13-2007, 09:25 PM

I havent got it tuned yet...its always been stumbling at idle etc. I havent touched my sard FPR ...should I???

Rusted_PS13 · 12-13-2007, 09:35 PM

Most likely it was just gas if you just kept trying to start it, it wouldn't hurt to change the plugs

onesicklambo · 12-13-2007, 10:40 PM

they looked JUST like the bottom pic;

"Dry and wet fouling
Fouling, either dry (top - matt black, sooty) or wet (bottom - gloss black, sticky),Carbon deposits build up when the plug fails to fire correctly and burn them off. Air/fuel mixture too rich, choke stuck on, electrical problem, extended periods of low speed driving, plug heat range too cold. All should be investigated"

so...prob because I have not got tune or set the timing? Could this "WET FOUL" be causing the motor not to fire?

kevtrinh · 12-13-2007, 10:44 PM

check fuel pressure... should be around 38 psi stock with the vacuum plugged in

onesicklambo · 12-13-2007, 10:50 PM

^ my defi gauge reads ~3 I think its in BARS? so It would be around 43psi? I looked at the sard regulator..I dont think it can be adjusted? I am going to get ne wplugs...fingers crossed it fires.

Rusted_PS13 · 12-13-2007, 11:05 PM

Sard regulator can be adjusted (loosen the lower nut 13 i think and than adjust it from the smaller one 10) , fouled plugs can cause it to not start, what kind of plugs are you running? BKR7E? what is it gapped at?

HalveBlue · 12-13-2007, 11:54 PM

Fouled plags can cause your engine not to catch.

But you need to figure out why your plugs are fouling up to begin with.

Things to check: Injector O-rings, Fuel rail, piston rings, head gasket.

It doesn't have to be fuel that fouled your plugs. In rare cases oil and coolant may be the culprit.

Lastly, make sure you let the cylinders dry out. Remove all the sparkplugs and let the gasoline evaporate/leak down. This can take anywhere from a few minutes to a couple of hours. Use an air hose (if available) to dry out the cylinders more quickly.

Good Luck!

Chrischeezer · 12-14-2007, 05:10 AM

lets see that car plz!!???

what type of fuel system do u have? what size injectors?
do all the plugs look the exact same?

onesicklambo · 12-14-2007, 08:40 PM

Quote:

Originally Posted by Chrischeezer

lets see that car plz!!???

what type of fuel system do u have? what size injectors?
do all the plugs look the exact same?

Walbro 255, fuel cell, RC 750cc,SARD FPR, SARD fuelrail, AN's and SS.
Well tried again tonight..cranked and fired for a SECOND, very rough.
So I took em all out AGAIN.. gapped .030 all are black and wet except for the last cylinder. Geeze...leaky injector??? But THREE!? adjusted the fuel pressure to ~40psi. I hate sr's. guess im gonna have to take it to a shop I give up

i dont get..it started fine and ran 20times.. then all of a sudden it started to idel REALLY rough, died and wont start again. anyone in NORCAL wanna look at it? Ill pay

per chrisscheezer request

and my stupidd motor that wont start

*S13Boosts* · 12-15-2007, 02:28 AM

510..

mesglength

Koopa Troopa · 12-14-2007, 05:40 AM

Just turn the crew on the top to the left a quarter turn until the idle changes.. That should help it run a little leaner.

brewster240 · 12-15-2007, 02:33 AM

wheres the convertible aerostar?

nicku · 12-15-2007, 08:31 AM

it might possiblely be the timing, too...my car has the same problem....we didnt think it would be the timing...but it ended up to be the timing was way off

AsleepAltima · 12-17-2007, 05:54 PM

beautiful car man, very nice setup.
hows it running now?

serturbo · 12-18-2007, 12:52 AM

I second that beautiful car statement.

What type of engine management? Sounds like you really need to get a good base tune on it.

It could be leaky injectors or orings. Let everything dry out and then turn the pump on. Don't start the engine. Check if fuel is getting into the cylinders.

onesicklambo · 12-19-2007, 12:56 AM

thanks guys..car still hasnt started yet. All i have right now is a ENTHAPY flash. I have not even touched the timing..ive messed with the CAS but thats it.\ i am gettin a SAFC NEO and gonna get it tuned

12-13-2007, 09:09 PM	#1
onesicklambo Leaky Injector Join Date: Sep 2006 Location: norcal Age: 38 Posts: 110 Trader Rating: (0) Feedback Score: 0 reviews	Spark plugs supposed to look like this? my car started a bunch of times..then all of a sudden didnt start. WTF I pulled the plugs to check for spark and they look like this. RUnning really rich??? They have been in for aprox 15miles which is all my motor has gone. I steel wooled the black stuff off and still wont start! There is spark from all coil packs. Is there any other diagnostics? TPS @ .5v. When I turn the CAS is there suppose to be a noise like injectors pumping? Help: btw they looked like they were very oily..maybe it was just gas?

12-14-2007, 05:10 AM	#11
Chrischeezer Zilvia FREAK! Join Date: Jul 2005 Location: earth Age: 41 Posts: 1,406 Trader Rating: (2) Feedback Score: 2 reviews	lets see that car plz!!??? what type of fuel system do u have? what size injectors? do all the plugs look the exact same? __________________

12-14-2007, 05:40 AM	#14
Koopa Troopa Post Whore! Join Date: Sep 2006 Location: 北谷著, 沖縄県、日本 Posts: 2,565 Trader Rating: (3) Feedback Score: 3 reviews	Just turn the crew on the top to the left a quarter turn until the idle changes.. That should help it run a little leaner. __________________ Buy my Stillway shifter!

12-13-2007, 09:18 PM	#2
duffman1278 Post Whore! Join Date: Apr 2007 Location: Covina Age: 37 Posts: 2,844 Trader Rating: (8) Rides Gallery: duffman1278 Feedback Score: 8 reviews	is that a 510 that I see???? Looks niiice

12-13-2007, 09:21 PM	#3
AsleepAltima Zilvia Addict Join Date: Aug 2006 Location: Ontario, Ca Age: 52 Posts: 667 Trader Rating: (8) Feedback Score: 8 reviews	for whatever reason, youre running very rich. do you have the pressure on the regulator set correctly? is this a recent thing?

12-13-2007, 09:25 PM	#4
onesicklambo Leaky Injector Join Date: Sep 2006 Location: norcal Age: 38 Posts: 110 Trader Rating: (0) Feedback Score: 0 reviews	I havent got it tuned yet...its always been stumbling at idle etc. I havent touched my sard FPR ...should I???

12-13-2007, 09:35 PM	#5
Rusted_PS13 Zilvia Member Join Date: May 2005 Location: Erath, Louisiana Posts: 161 Trader Rating: (0) Feedback Score: 0 reviews	Most likely it was just gas if you just kept trying to start it, it wouldn't hurt to change the plugs

12-13-2007, 10:40 PM	#6
onesicklambo Leaky Injector Join Date: Sep 2006 Location: norcal Age: 38 Posts: 110 Trader Rating: (0) Feedback Score: 0 reviews	they looked JUST like the bottom pic; "Dry and wet fouling Fouling, either dry (top - matt black, sooty) or wet (bottom - gloss black, sticky),Carbon deposits build up when the plug fails to fire correctly and burn them off. Air/fuel mixture too rich, choke stuck on, electrical problem, extended periods of low speed driving, plug heat range too cold. All should be investigated" so...prob because I have not got tune or set the timing? Could this "WET FOUL" be causing the motor not to fire?

12-13-2007, 10:44 PM	#7
kevtrinh Zilvia Junkie Join Date: May 2006 Location: Richmond,VA Posts: 370 Trader Rating: (0) Feedback Score: 0 reviews	check fuel pressure... should be around 38 psi stock with the vacuum plugged in

12-13-2007, 10:50 PM	#8
onesicklambo Leaky Injector Join Date: Sep 2006 Location: norcal Age: 38 Posts: 110 Trader Rating: (0) Feedback Score: 0 reviews	^ my defi gauge reads ~3 I think its in BARS? so It would be around 43psi? I looked at the sard regulator..I dont think it can be adjusted? I am going to get ne wplugs...fingers crossed it fires.

12-13-2007, 11:05 PM	#9
Rusted_PS13 Zilvia Member Join Date: May 2005 Location: Erath, Louisiana Posts: 161 Trader Rating: (0) Feedback Score: 0 reviews	Sard regulator can be adjusted (loosen the lower nut 13 i think and than adjust it from the smaller one 10) , fouled plugs can cause it to not start, what kind of plugs are you running? BKR7E? what is it gapped at?

12-13-2007, 11:54 PM	#10
HalveBlue Zilvia FREAK! Join Date: Mar 2004 Location: I'm somewhere where I don't know where I am! Posts: 1,549 Trader Rating: (0) Feedback Score: 0 reviews	Fouled plags can cause your engine not to catch. But you need to figure out why your plugs are fouling up to begin with. Things to check: Injector O-rings, Fuel rail, piston rings, head gasket. It doesn't have to be fuel that fouled your plugs. In rare cases oil and coolant may be the culprit. Lastly, make sure you let the cylinders dry out. Remove all the sparkplugs and let the gasoline evaporate/leak down. This can take anywhere from a few minutes to a couple of hours. Use an air hose (if available) to dry out the cylinders more quickly. Good Luck!

12-15-2007, 02:28 AM	#13
S13Boosts Premium Member Join Date: Oct 2006 Location: VEGAS Posts: 5,292 Trader Rating: (12) Feedback Score: 12 reviews	510.. mesglength

12-15-2007, 02:33 AM	#15
brewster240 Zilvia FREAK! Join Date: Dec 2006 Location: tampa bay, fl Age: 42 Posts: 1,042 Trader Rating: (2) Feedback Score: 2 reviews	wheres the convertible aerostar?

12-15-2007, 08:31 AM	#16
nicku Zilvia Junkie Join Date: Aug 2007 Location: St. Cloud, MN Age: 40 Posts: 545 Trader Rating: (0) Feedback Score: 0 reviews	it might possiblely be the timing, too...my car has the same problem....we didnt think it would be the timing...but it ended up to be the timing was way off

12-17-2007, 05:54 PM	#17
AsleepAltima Zilvia Addict Join Date: Aug 2006 Location: Ontario, Ca Age: 52 Posts: 667 Trader Rating: (8) Feedback Score: 8 reviews	beautiful car man, very nice setup. hows it running now?

12-18-2007, 12:52 AM	#18
serturbo Leaky Injector Join Date: Feb 2007 Location: Hawaii Age: 50 Posts: 56 Trader Rating: (0) Feedback Score: 0 reviews	I second that beautiful car statement. What type of engine management? Sounds like you really need to get a good base tune on it. It could be leaky injectors or orings. Let everything dry out and then turn the pump on. Don't start the engine. Check if fuel is getting into the cylinders.

12-19-2007, 12:56 AM	#19
onesicklambo Leaky Injector Join Date: Sep 2006 Location: norcal Age: 38 Posts: 110 Trader Rating: (0) Feedback Score: 0 reviews	thanks guys..car still hasnt started yet. All i have right now is a ENTHAPY flash. I have not even touched the timing..ive messed with the CAS but thats it.\ i am gettin a SAFC NEO and gonna get it tuned