What's wrong with this??

**rokkuchan** · 08-05-2009 02:08 AM

Hi guys,

just doing some checks so took apart the coilpacks and checked my spark plugs... and note my car only has done (54,000kms).

I was told that with if tip is gray and those burning marks means my car is running lean?? Car does feel laggy sometimes... could it be wrong air/fuel mixture? Does everyone else looks similar? Is this normal?

But today i have bought all of this and plan to do a full service myself... Might reset the ECU when i put new plugs in and see what happens...

**95civic** · 08-05-2009 02:49 AM

My dealing with plugs through racing...

I have only read plugs from the electro end havent had any experience with the terminal end. Ideally the area surrounding the current conductor should be a tan/cream colour and there should be a consistant gap between the conductors on all plugs. When it starts to turn a white colour you are running too lean or too hot, and on the other end of the scale, obvously if it is wet and black you are running too rich.

**aaronng** · 08-05-2009 04:04 AM

That brown coloured ring on the white insulator part is normal, as long as it doesn't cover the whole white section. That's just the staining from corona discharge.

**rokkuchan** · 08-05-2009 12:35 PM

so what can i do when it is running lean? I dont have any modifications to the engine...

**Type S Tony** · 08-05-2009 12:40 PM

Clean your injectors and maybe try filling up at different servos!

**rokkuchan** · 09-05-2009 07:16 PM

Hey guys,

just FYI,

I've added some nulon fuel additives for fuel injector cleaning.

-did spark plugs change
-did oil and oil filter change
-did transmission oil change
-did differential oil change
-did radiator flush and refill
-cleaned throttle body
-did ECU reset

DRIVE IS SO IMPROVED!!!! Smoother gear changes, acceleration from 1-4000rpm seems so much better than b4 (had sort of flat spots b4), less noise coming from the back! But i find the whining gear noise more audible than b4.