Spark Plug issues

[ReeseLightning]

Happy Halloween everyone !

Bought new spark plugs and after a few adjustments there is a sputter at higher rpms (3.5k and higher) in 3rd gear. Does this indicate too large of a gap ?

 

[ShawnB]

Which engine and what did you gap them at?

Sent from my VS980 4G using Tapatalk

 

[ReeseLightning]

1.4 T, tried gapping to .028 with a coin style gap gauge, bought a more accurate one ill use on the plugs tomorrow.

 

[ShawnB]

I have my factory plugs at .028. But, i think most plugs like .025-.026.. Might try tightening your gap up just a tad.

Sent from my VS980 4G using Tapatalk

 

[ReeseLightning]

Tighter gap will prevent higher rpm sputtering?

 

[ReeseLightning]

Flashed back to stock to prevent higher rpm's until i get her to a garage in order to get the clutch installed

 

[rdss]

Moved to the appropriate section.

 

[Sneakerfix]

Which plugs did you get? 6282 ngk? Make sure springs are not off set

 

[ReeseLightning]

Autolite Xp (Xtreme Performance) Iridium Enhanced Fine Wire Spark Plug XP39323 regapped to .030 on stock tune without misfires, reflashed budget tune to see what happens

 

[ReeseLightning]

Any ideas as to why @4k there isn't s shutter in stock mode however, when switched to tuned mode there is a shutter at 4k rpm?

 

[Sneakerfix]

Any ideas as to why @4k there isn't s shutter in stock mode however, when switched to tuned mode there is a shutter at 4k rpm?

Your gap is to large bring it down to 27. I only use copper plugs on turbo cars they don't last long but are 10bucks a pack.

 

[ReeseLightning]

Regapped to .027 still shuttering at 4k

 

[Sneakerfix]

How do your plugs look? Any vac leaks?

 

[ReeseLightning]

They're brand new I bought new ones and installed them, they have a whiteish powder on the tips and idk what you mean by vac leaks, my ultra gauge does not show any signs of loss of vacuum during boost

 

[Sneakerfix]

Solid white or ash white? What's the heat range on the plugs? If the plugs are good doesn't matter if they Are new I've had brand new plug sa day old go bad. But if all is good you have a vacuum leak somewhere which will be seen on the plugs as white

 

[ReeseLightning]

Had a misfire code throw finally P0301; One of the boots was broken off the coil pack (idk if this was me or under the previous owner. Anyway bought a new coilpack and overnighted it FedEx. Hope this is the issue so I can go back to enjoying her to the fullest

 

[Chevy2012sonic]

Had a misfire code throw finally P0301; One of the boots was broken off the coil pack (idk if this was me or under the previous owner. Anyway bought a new coilpack and overnighted it FedEx. Hope this is the issue so I can go back to enjoying her to the fullest

I actually had the same problem with mine. But it would only miss fire under certain rpm's but that also ended up being the coil


2012 chevy sonic

 

[ReeseLightning]

All fixed, it was the coil pack, be careful when removing the boots !!