spark plug question for a 4g63

[eclipsers97boy]

what is the purpose of going with a colder plug? Also my car is boosting 14psi from a FP T28 and minorly backfiring. just replaced the plugs with new ones 10k ago. will loweringor highering the temp on the plug help?

 

[Defiant]

Colder plug ranges are used when there are issues with high loads. You shouldn't need them at 14 pounds of boost.
Are you running NGK BPR6ES plugs at .028"?

 

[BullseyeGSX]

That backfiring sounds like a fuel problem

 

[Jeff99GS]

what is the purpose of going with a colder plug? Also my car is boosting 14psi from a FP T28 and minorly backfiring. just replaced the plugs with new ones 10k ago. will lowering or highering the temp on the plug help?

A spark plug has to reach a certain temp in order to stay clean. At that temp it will burn off any harmful deposits/carbon. Since your car is not running high boost, I would run a NGK BPR-6ES copper core plug as Defiant suggested. A colder plug in your car will NOT reach sufficient temps to keep itself clean. Resulting in a fouled out dirty plug.

If you were running HIGHER boost levels it is a good idea to get a cooler plug to help prevent Pre-ignition. Which can be caused by a super hot plug igniting the fuel mixture early, due to HIGH compression/boost and a red hot spark plug tip. So By cooling the plug down you lessen the chance of doing damage to the engine.

Is there such a word as HIGHERING hahahaha.

Don't forget to change or check the wires!

 

[daren_p]

What type of plugs are you running? ie are you running the recommend "cheepo" copper plugs as mentioned above or are your running a "fancy" (ie platinum, ie crap for our cars) plug? If your running platinum, it very common to have miss fire issues.

 

[eclipsers97boy]

pulled 1 plug its ngk bkr6e11, very dirty gonna change them soon. thanx for the explanation.