ok i built a obd0 ls-vtec in my ef hatch Pct's gsr head, and i started it up last nite after finish the build last nite, and for some reason its running as if the firring order is off an timming is off, but the firing order is correct and the timming is dead on.I dont know what else to look for.only on the #4 cyl. its acting like *** i put the plug wire on and it pops like the firing order is wrong and if i slowly pull the plug wire away from the plug it kinda runs normal.when i open the throttle body it pings alittle, lmk your opinion, thanx.

 

Need more info. What ecu?

 

pic's..?

 

im going to take the **** back apart.i'll let u know, oh running chipped pr3

 

i had a simimlar problem, seemed like it was only running on three cylinders, i triple check everything, bought all new injectors, resistor pack, etc.....

All along it was a bad ecu...have someone to swap with?

Good luck

 

check the valve lash again. A valve lash could be too tite.

 

well i replaced the rings, silver stone plugs, and its running good, but this kid sold me a chopped ls Dist, and im detenating under load, i took my buddies Dist off his obdo ls-vtec an my car ran sooo good, time to ream this kids ***.

 

welp, another problem, fake jdm pistons where hitting the head found some new Pct's Oem picking them up today for 100 bucks

 

Get these plugs from Advance...

NGK Stock no 4554, its an NGK Racing 8 V Power.

 

i got some silverstones the burn colder. going to cheack on my pistons at the machine shop!!wooo hooo