Questions...Need answers!!

[SVTman75]

I put the NGK TR5 plugs in and they are gapped at 38. I also added a Wix fuel filter. Problem is that the truck is idling rough and it all stutters a little. Under WOT it's fine and i can't feel anything.

Foul plug?
Injector cleaner?

Suggestions?

 

[Scuba-Matt]

What mods do you have ?
TR6 is the plug most guys use not TR5

 

[SVTman75]

Hardly no mods. Stock boost. Drop in air filter and cat back.

TR5's are for the guys whom have no mods - minimal mods.
TR6's are for all the rest whom have modded the piss out of it.

 

[Ryan]

check all your hoses and what not under the hood maybe? loose coil pack maybe?

 

[2004SVTLightnin]

Almost positive its something with the plugs

 

[BlownBayou]

Josh,

Check to see if that coil pack might have worked loose...I doubt it but it is a start. I am leaning towards a possible foul out due to the sealant put on the heli coil insert. Might have gotten on the plug somehow. Sorry I missed you yesterday.......BUSY AS HELL!!!!! I would get another TR-5 and try that. If that does not work.....You might have to regap your plugs to .039....These trucks are THAT sensitive.

Later bro

 

[BlownBayou]

BTW....How is she felling at WOT now Blower is whining a little louder ehh????

Later

 

[Lightning28307]

You best bet is to take it some where and have it tuned! I think that you are just to rich with new fuel pump, generally comes more fuel rather than being lean I think that you maybe fatter than hell or call JDM/JLP/LFP/AMAZON they will tell you what is wrong? Those guys know a little better than us as well

 

[SVTman75]

Todd, i might make it that way on Tuesday or so. I will call and see what all ya got going on. It's been a very busy week for me as well dealing with all the family. I'll shoot ya a ring.

 

[BlownBayou]

Josh,

I remember you telling me that your O2 sensor is bad......I would say 99.9% of your problems are from that......Get that thing changed out.

Later

 

[SVTman75]

Also, out today in the sunlight, i notice that there is black all over my exhaust tips. So yeah, the truck is running pig rich.

 

[ralphy1798]

Hardly no mods. Stock boost. Drop in air filter and cat back.

TR5's are for the guys whom have no mods - minimal mods.
TR6's are for all the rest whom have modded the piss out of it.

Dude!

I had the same issue when mine was basically stock. I went to the TR6s and it smoother it out. They wont hurt anything, try it!

Jeff

 

[LIGHTNING LARRY]

Also, out today in the sunlight, i notice that there is black all over my exhaust tips. So yeah, the truck is running pig rich.

Def. sounds like your O2 sensor is phucked up as stated above.

 

[CHIZ]

do it right the first time and get denso IT22's. it'll run perfect.

later
chiz