personally an easy swap to see if its gas related, james try swapping to a different brand of gas....sometimes bad quality gas can cause knock due to bad additives in gas...what plugs you running and what gap?

 

Hi Dastallion, i truly agree as ive changed back Esso and it do help alot...
My plug gapped at 0.020

After my fine tune, everything is fine now...

 

fine tune or reduction in timing?
i'm glad you've worked it out

 

Mike, im so glad that you are around whenever i need help...

I'll be putting in new BC valvesprings, retainers, GSC lifters and GT3076R turbo...

Hope everything will work out fine and if not, i need RSMike to the rescue...hahahaha

 

your plug gap is at .020 man thats a really tight gap, try opening up your gap to .022 or .024 to close a gap can affect your performance...

 

Omg, i didnt know that! Will do that tmr...

 

have you tested that i the dyno?
James i wouldn't worry about it.
As long as it's not missing

 

no i dont currently own a dyno but its a proven fact, read this article: http://www.ehow.com/about_6072203_ga...-critical.html
Go to the section titled "Proper Spark Plug Gap" maybe it would teach you to second guess me. haha
but thats what i was taught in automotive trade school, too close of a gap will cause it too run rich since the af compressed mix wont ignite properly, too wide and it might not fire.

 

Thanks Guys as both gotta point...After gapped 0.02 my mis-fire gone.

 

boom! your welcome, thatll be a couple beers thank you haha

 

If you are in my country than it will be a couple of Barrel for you Dastallion....hahahahaha

 

***Ninja edit***
OEM tech manual say .020-.024.

 

BOOM lol

 

thats good 956 guy, but its like torque specs, they dont have an exact number, but an around about torque, i usually start in the middle then double check...

 

Sort of what happened to me, I took the spark plug out when i set it to top dead center when i boost leak checked it and i accidently hit the plug and messed up the gap lol.