Whats wrong with my Car!? Wisemen Please Read Pictures Included

[illeagle_talon]

Lately my car has been stuttering and stumbling and for a long time I thought it was just a boost leak but it would only do it occasionaly and I don't know how to do a leak test on the intake tract. Anyway I did some searching and it seems that this boost "stuttering" is actually common and it's usually because of bad plug wires or poorly gapped plugs. I'm using NGK BPR7ES plugs and Accel wires so I know its not shitty quality products. I pulled the plugs and found that there was whitish grey buildup on the plugs and didn't know if this is a sign of detonation or what. This stuttering feels a lot like a boost leak IMO and I'm completely stumped. I've tried everything I know. Someone please help!

 

[TurboJunky]

looks like carbon deposits, usually a sign it's running rich. notice any smoke coming out of the exhaust?

are you using the right temp plugs?

any fuel system mods?

 

[illeagle_talon]

Yeah I do have a rewired Walboro 255. It definetly does shoot black smoke out the back if I launch and stuff. I really want to get my car tuned so it'll stop shooting smoke and smelling like a go kart.

 

[TurboJunky]

you're just running uber rich, methinks.

 

[Generation1JeY]

rewired 255 fuel pump with stock fpr and injectors with no safc? i think ur problems lies right there....

 

[44pirate]

AFPR

 

[illeagle_talon]

Hey thanks a lot guys for all the replies. Tonight I just ordered my AFPR from full throttle speed and a 100 psi fuel pressure gauge. Hopefully that will help cure some of the problem and not too far from now I'll get my GM MAF and logger setup so I'll be able to tune.Thanks again!