cylinder 3 spark!? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Driftapparel.com · 04-16-2008, 03:38 PM

Wow this is crazy! Anyone know what it could be?

So when I am drifting or just spinning messing around if I boost too much (it seems) my cylinder 3 spark plug gets smashed and I loose the cylinder until I pull it out and re-gap it. It's all pitted too as if something is hitting it. The wierd thing is that it is only the 3rd spark plug back!

Any input would be greatly appreciated

Thanks
-Brett

AllMotorS13 · 04-16-2008, 05:14 PM

well...something's probably hitting it, haha. what type of plug are you using? anything under a free rev, or is it just under a load? how much boost?

Driftapparel.com · 04-16-2008, 05:48 PM

I am using the stock NGK spark plugs ill post the code tonight after I get home. I was using wrong spark plugs before and it was doing it all over the rpm range now that I have the right ones in its only under boost. Stock S13 redtop SR20 boost.

Thanks alot

AllMotorS13 · 04-16-2008, 05:53 PM

i believe they should be bkr6e for a relatively stock SR. not sure why it would only mess up #3. have you tried actually looking through the spark plug hole into the cylinder?

HalveBlue · 04-16-2008, 10:50 PM

Check the top of the piston for any marks that would indicate the piston hitting the spark plug. Also check the threads for the spark plug hole for any damage.

Perhaps the piston rod isn't seated correctly on the crankshaft? Bad bearing? Loose con rod bolt?

04-16-2008, 03:38 PM	#1
Driftapparel.com Leaky Injector Join Date: Jan 2008 Location: Palm Springs Age: 44 Posts: 94 Trader Rating: (0) Feedback Score: 0 reviews	cylinder 3 spark!? Wow this is crazy! Anyone know what it could be? So when I am drifting or just spinning messing around if I boost too much (it seems) my cylinder 3 spark plug gets smashed and I loose the cylinder until I pull it out and re-gap it. It's all pitted too as if something is hitting it. The wierd thing is that it is only the 3rd spark plug back! Any input would be greatly appreciated Thanks -Brett __________________

04-16-2008, 05:14 PM	#2
AllMotorS13 Join Date: Nov 2006 Location: South Carolina Age: 41 Posts: 24 Trader Rating: (0) Feedback Score: 0 reviews	well...something's probably hitting it, haha. what type of plug are you using? anything under a free rev, or is it just under a load? how much boost? __________________ 89' Two Tone - All Original

04-16-2008, 05:53 PM	#4
AllMotorS13 Join Date: Nov 2006 Location: South Carolina Age: 41 Posts: 24 Trader Rating: (0) Feedback Score: 0 reviews	i believe they should be bkr6e for a relatively stock SR. not sure why it would only mess up #3. have you tried actually looking through the spark plug hole into the cylinder? __________________ 89' Two Tone - All Original

04-16-2008, 05:48 PM	#3
Driftapparel.com Leaky Injector Join Date: Jan 2008 Location: Palm Springs Age: 44 Posts: 94 Trader Rating: (0) Feedback Score: 0 reviews	I am using the stock NGK spark plugs ill post the code tonight after I get home. I was using wrong spark plugs before and it was doing it all over the rpm range now that I have the right ones in its only under boost. Stock S13 redtop SR20 boost. Thanks alot __________________

04-16-2008, 10:50 PM	#5
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	Check the top of the piston for any marks that would indicate the piston hitting the spark plug. Also check the threads for the spark plug hole for any damage. Perhaps the piston rod isn't seated correctly on the crankshaft? Bad bearing? Loose con rod bolt?