NEED HELP PLEASE!!! with my sr20det spits and spuders. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Str8silvias14 · 05-12-2009, 01:07 PM

well i bought the car from a friend and it was running great like a freaking champ. but then i had the bright idea of doing a tune up on it and i replaced the oil filter, oil, and spark plugs. I went wrong when i changed the the plugs from heat range 7 to heat range 5. thats when it started to spit and sounded like it back fired. i changed the plugs to heat range 9 to see if it would get rid of the problem and it didnt so i put in the originals heat range 7 and it just minimized it but its still there.

can anyone help???

rc1honda · 05-12-2009, 02:08 PM

Checkl the plug gapping. You said you put the orginals back in but who knows. i think you want it at .30 for the 7.

luvsr20 · 05-12-2009, 06:37 PM

depending on how much boost you are making (13psi- above), you may want to have the gap .028

*fliprayzin240sx* · 05-13-2009, 10:39 AM

Why the fuck would you run 9 heat range spark plugs? Rule of thumb...6 for stock, 7 more slightly modded, 1 higher heat range for every 100 hp you make. For you to run 9s, you better be making over 450.

Go look for some BCPR73S-11s, double check the gaps at .028-.030.

Str8silvias14 · 05-13-2009, 07:28 PM

the reason i changed it to 9s were cuz a friend that had the same problem told me it worked for him....
my boost is at like no higher than 8 psi
i cant gap the plugs cuz there ngk iridiums.
what i think it is also is it might be my coil packs sense they look really bad...

*fliprayzin240sx* · 05-14-2009, 02:13 PM

You can gap iridiums, just be careful not to nick the tips...so again, stock setup, stock boost, 9s will make it run like shit. BCPR7ES-11s, $1.25 per sparkplug...fuck all that noise with iridium shit, cheap enough for you to order a box of them for the price of 1 iridium plug.

Str8silvias14 · 05-14-2009, 09:18 PM

im trying to find that spark plug i cant find it. your exact part number im putting everywhere and no one seems to reconize it.

slociv · 05-15-2009, 07:23 AM

try bkr6e or bkr6e-11 and regap

05-12-2009, 01:07 PM	#1
Str8silvias14 Join Date: Jan 2009 Location: Oceanside, CA Age: 21 Posts: 24 Trader Rating: (0)	NEED HELP PLEASE!!! with my sr20det spits and spuders. well i bought the car from a friend and it was running great like a freaking champ. but then i had the bright idea of doing a tune up on it and i replaced the oil filter, oil, and spark plugs. I went wrong when i changed the the plugs from heat range 7 to heat range 5. thats when it started to spit and sounded like it back fired. i changed the plugs to heat range 9 to see if it would get rid of the problem and it didnt so i put in the originals heat range 7 and it just minimized it but its still there. can anyone help???

05-13-2009, 10:39 AM	#4
fliprayzin240sx SLINKY + ESCULATOR = Fun Times Join Date: Aug 2002 Location: Ass Crack of Japan Posts: 8,413 Trader Rating: (5) Rides Gallery: fliprayzin240sx	Why the fuck would you run 9 heat range spark plugs? Rule of thumb...6 for stock, 7 more slightly modded, 1 higher heat range for every 100 hp you make. For you to run 9s, you better be making over 450. Go look for some BCPR73S-11s, double check the gaps at .028-.030. __________________

05-14-2009, 02:13 PM	#6
fliprayzin240sx SLINKY + ESCULATOR = Fun Times Join Date: Aug 2002 Location: Ass Crack of Japan Posts: 8,413 Trader Rating: (5) Rides Gallery: fliprayzin240sx	You can gap iridiums, just be careful not to nick the tips...so again, stock setup, stock boost, 9s will make it run like shit. BCPR7ES-11s, $1.25 per sparkplug...fuck all that noise with iridium shit, cheap enough for you to order a box of them for the price of 1 iridium plug. __________________

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

05-12-2009, 02:08 PM	#2
rc1honda Zilvia Member Join Date: Aug 2008 Location: Chicago Age: 27 Posts: 215 Trader Rating: (5)	Checkl the plug gapping. You said you put the orginals back in but who knows. i think you want it at .30 for the 7.

05-12-2009, 06:37 PM	#3
luvsr20 Zilvia Junkie Join Date: Jan 2004 Location: Illinois Age: 25 Posts: 302 Trader Rating: (1)	depending on how much boost you are making (13psi- above), you may want to have the gap .028

05-13-2009, 07:28 PM	#5
Str8silvias14 Join Date: Jan 2009 Location: Oceanside, CA Age: 21 Posts: 24 Trader Rating: (0)	the reason i changed it to 9s were cuz a friend that had the same problem told me it worked for him.... my boost is at like no higher than 8 psi i cant gap the plugs cuz there ngk iridiums. what i think it is also is it might be my coil packs sense they look really bad...

05-14-2009, 09:18 PM	#7
Str8silvias14 Join Date: Jan 2009 Location: Oceanside, CA Age: 21 Posts: 24 Trader Rating: (0)	im trying to find that spark plug i cant find it. your exact part number im putting everywhere and no one seems to reconize it.

05-15-2009, 07:23 AM	#8
slociv Join Date: Apr 2005 Location: ky Age: 27 Posts: 14 Trader Rating: (0)	try bkr6e or bkr6e-11 and regap

Sponsored Links