spark plug problem - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

91CRXsiR · 02-04-2003, 08:19 PM

my 3rd spark plug is eh... sparking? like sparks flying everywhere.. what could be the problem? the car is really shaky..

im not w/ the car right now by brother is.. so i hope its nothing major

240racer · 02-04-2003, 08:30 PM

I had that problem on my '89 motor too. It was because the exhaust flange gaskets were leaking and hot exhaust was blowing on the plug boots which burned them off and then they gapped to the manifold. You probably need to replace your gaskets which kinda sucks and your spark plug wires. I temporarly fixed the problem by wraping the wires in electrical tape and heat shielding, but the voltage is really high and can gap through most anything. The gasckets are cheap and it's only 8 bolts, but it's heavy and hard to work with. I also had the heat shield removed so that might have made a difference.

91CRXsiR · 02-04-2003, 09:50 PM

so my exhaust flange has a leak and is leaking onto my plug boot,

so i need a new exhaust flange gasket? where is this exhaust flange? i have no clue

and new plugs?

**mrmephistopheles** · 02-05-2003, 12:28 AM

You need new plug wires definitely, and if your problem is the same as 240racer, you need to replace the exhaust manifold gasket. (goes between the head and the exhaust manifold)

Kevin

kandyflip445 · 02-05-2003, 01:02 AM

Yeah. Change your plug wires and try to figure out what ruined them. It could be what 240racer said or a number of other things. Look for exhaust leaks around there. Make sure that the wires aren't touching anything that could ruin them. Like something hot, moving, etc.

91CRXsiR · 02-05-2003, 02:49 PM

well i did what he said , i tapped up the plug that seems to help it for now..

how much are plug wires and what kind should i get ? and where?

damn .. i was saving money to fix my trueno.. arg@!!! its like she "knows"

anyways.. yea... my car has 160K 89 SOHC ... w/ NGK plugs

91CRXsiR · 02-05-2003, 03:48 PM

PDM sell some wires for like $30.00 are these any good? price seems cool to me.

kandyflip445 · 02-05-2003, 04:45 PM

They seem like good wires. They might increase Electro Magnetic Interference (EMI) though because they say that they have better current flow. Spark plug wires have a VERY high impedance to reduce the EMI. If it does increase EMI then you could expect a turbo like sound in your stereo...

. I've never tried that brand on any car though so if it were me I would go for it. What's 30 bucks right. Especially if they help improve performance without the EMI. If you don't want to take the risk just go to a parts store and buy plug wires from them.

91CRXsiR · 02-06-2003, 01:26 AM

well i did hear some weird noises from my stereo, but it wasnt a turbo sound it was more of a siren?..

anyways.. the only thing about PDM is i have to wait for shipping and im guessing this is something i want to solve asap

02-04-2003, 08:19 PM	#1
91CRXsiR Nissanaholic! Join Date: Oct 2001 Location: City of Industry, CA [626] Age: 41 Posts: 2,092 Trader Rating: (1) Feedback Score: 1 reviews	spark plug problem my 3rd spark plug is eh... sparking? like sparks flying everywhere.. what could be the problem? the car is really shaky.. im not w/ the car right now by brother is.. so i hope its nothing major

02-04-2003, 08:30 PM	#2
240racer Zilvia Junkie Join Date: Nov 2001 Location: Minneapolis, MN Age: 45 Posts: 574 Trader Rating: (0) Feedback Score: 0 reviews	I had that problem on my '89 motor too. It was because the exhaust flange gaskets were leaking and hot exhaust was blowing on the plug boots which burned them off and then they gapped to the manifold. You probably need to replace your gaskets which kinda sucks and your spark plug wires. I temporarly fixed the problem by wraping the wires in electrical tape and heat shielding, but the voltage is really high and can gap through most anything. The gasckets are cheap and it's only 8 bolts, but it's heavy and hard to work with. I also had the heat shield removed so that might have made a difference. __________________ Adam '89 coupe KA24DE+T 14.1 @ 104 MPH '88 Celica All-Trac turbo stock, but no more ecu codes!!

02-05-2003, 04:45 PM	#8
kandyflip445 Post Whore! Join Date: Sep 2002 Location: Arden, NC Age: 39 Posts: 4,460 Trader Rating: (1) Rides Gallery: kandyflip445 Feedback Score: 1 reviews	They seem like good wires. They might increase Electro Magnetic Interference (EMI) though because they say that they have better current flow. Spark plug wires have a VERY high impedance to reduce the EMI. If it does increase EMI then you could expect a turbo like sound in your stereo.... I've never tried that brand on any car though so if it were me I would go for it. What's 30 bucks right. Especially if they help improve performance without the EMI. If you don't want to take the risk just go to a parts store and buy plug wires from them.

02-04-2003, 09:50 PM	#3
91CRXsiR Nissanaholic! Join Date: Oct 2001 Location: City of Industry, CA [626] Age: 41 Posts: 2,092 Trader Rating: (1) Feedback Score: 1 reviews	so my exhaust flange has a leak and is leaking onto my plug boot, so i need a new exhaust flange gasket? where is this exhaust flange? i have no clue and new plugs?

02-05-2003, 12:28 AM	#4
mrmephistopheles Magnanimous Justice Distribution Service Join Date: Mar 2002 Location: BFE Age: 22 Posts: 14,369 Trader Rating: (9) Rides Gallery: mrmephistopheles Feedback Score: 9 reviews	You need new plug wires definitely, and if your problem is the same as 240racer, you need to replace the exhaust manifold gasket. (goes between the head and the exhaust manifold) Kevin

02-05-2003, 01:02 AM	#5
kandyflip445 Post Whore! Join Date: Sep 2002 Location: Arden, NC Age: 39 Posts: 4,460 Trader Rating: (1) Rides Gallery: kandyflip445 Feedback Score: 1 reviews	Yeah. Change your plug wires and try to figure out what ruined them. It could be what 240racer said or a number of other things. Look for exhaust leaks around there. Make sure that the wires aren't touching anything that could ruin them. Like something hot, moving, etc.

02-05-2003, 02:49 PM	#6
91CRXsiR Nissanaholic! Join Date: Oct 2001 Location: City of Industry, CA [626] Age: 41 Posts: 2,092 Trader Rating: (1) Feedback Score: 1 reviews	well i did what he said , i tapped up the plug that seems to help it for now.. how much are plug wires and what kind should i get ? and where? damn .. i was saving money to fix my trueno.. arg@!!! its like she "knows" anyways.. yea... my car has 160K 89 SOHC ... w/ NGK plugs

02-05-2003, 03:48 PM	#7
91CRXsiR Nissanaholic! Join Date: Oct 2001 Location: City of Industry, CA [626] Age: 41 Posts: 2,092 Trader Rating: (1) Feedback Score: 1 reviews	PDM sell some wires for like $30.00 are these any good? price seems cool to me.

02-06-2003, 01:26 AM	#9
91CRXsiR Nissanaholic! Join Date: Oct 2001 Location: City of Industry, CA [626] Age: 41 Posts: 2,092 Trader Rating: (1) Feedback Score: 1 reviews	well i did hear some weird noises from my stereo, but it wasnt a turbo sound it was more of a siren?.. anyways.. the only thing about PDM is i have to wait for shipping and im guessing this is something i want to solve asap