here is a question for ya's. my truck a 96 12er, 0 plate full forward, gutted afc, 3k's, scheid lcdv's, coaltrain 5X.014's, sps66 turbo, and a fass holding 30psi. when i make smoke, it is not black it is a dark grey sometimes lighter grey. im not sure what this can be. my timing is set at 17*, it does not clear up when at 50+psi boost, and i can peg my egt's no problem (1600*). im not sure what could be going on here.

Thanks
Cody -

Cumminsdieselboy's Sig:

1996 2500 4x4 ext cab. 0 plate, gutted afc, 3ks, Scheid LCDV's, Coaltrain 5x.014's, Super Phat Shaft 66, FASS 150/90, Snow stage 2 water/meth, single 6" stack(soon to be dual cat stacks), Flex-a-lite fans, DTT transmission. Best 1/4 mile: 14.19 at 99MPH.

doesnt the water meth cause the black smoke to come out more of a gray color?

it could be ur needing a lil more timing, but i dont think thats what it is. -

biged681985's Sig:

1999 dodge 2500
bombs: 12 valve with alot of bugs.

i haven't ran water/meth in a while. i will on sunday, but just normally it wont blow black. if in park and just floor it it blows a huge plume, but like a mix of light and dark grey...confusing enough? -

more timing try 20*

i have stock injectors and im going to bump mine to 17.5 next weekend my pickup does the same thing as yours but i have an H1C with an 18.5cm exhaust housing and i can peg my gauge in no time at all hopefully more timing will clear it up -

12valvetater's Sig:

1997 2500 4x4, 260,000 mi, nv4500, EMS lockout hub conversion, EMS vacum/delete, fully rebuilt engine, o-ringed head and block, 12mm ARP headstuds, 60 lb valve springs, 4k gsk, 4in down pipe to 5in behind the wheel, air dog2 165gph, Valair organic single disk, updated 5th gear nut, pyro and boost, street/towing cam from East Coast Diesel, NO fuel plate

i'd say look into the timing,from the sounds of it you have raw fuel coming out your exaust. -

BAD ASS RAM's Sig:

1997 RAM 2500 12 VALVE.100hp INJECTORS,#100 FUEL PLATE FULL FOREWARD, MODIFIED AND TUNED AFC HOUSING,HX35/40 HYBRID,NO SILENCER RING ,WASTE-GATE PLUGGED.BOOST,AND PYROMETER GAUGES.W/BUILT AUTO TRANNY AND BILLET CONVERTER,TC LOCK UP SWITCH,CHAMBERED DUAL 5"SLASH CUT STACKS,TRACTION BARS AND 17"X9"MOTO METAL WHEELS,WITH 295/75/17 NITTO TERRA GRAPPLERS

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hotcummins's Sig:

12v 5x18s injectors 191 delivery valves 3k springs aroura5000 single i built the all billet tranny and ats 5 disc converter #100 fuel plate fire ringed arp head studs timing 22.0 degrees tabbed kdp quick spool cam and exhaust manifold 5 inch turbo back exhaust w/ 6 inch tip afe intake k&n cold air water meth injection airdog2 165








http://www.dieseldawgs.com/

definately raw fuel -

cumminskid92's Sig:

92 D350 short bed, 2wd, reg cab.
pump maxed, hx35, 5in from trubo to 5in stacks
p pump conversion coming soon

does bumping timming fix dumping raw fuel out exhaust? -

Biggy B's Sig:

95 4x4 cummins built p pump #0 plate full ceramic clutch, 2inch levelers, stacks

someone correct me if im wrong, but i thought when advancing pump timing it fuels harder!!! -

captain_stabbin's Sig:

94cummins, 4"turbo back exhaust, fuel plate,

timing doesnt add fuel it changes at what "time" the fuel is injected into the combustion chamber if you timing is to close to TDC it doesnt have enough time to swirl the fuel mixing it with the air charge before the air temp is high enough to cause the fuel to burn it fully and lots of unburn fuel is blown out the exhaust where it continues to burn and increases exhaust temps -

exactly,too much timing,or too little timing,could result in unburnt fuel. -

More timing with that setup you should be at like 18 maybe 20 -

davo79's Sig:

95 ram 2500 4x4 12v #0 plate custom intake 4k gov 60 pound springs 191dvs new era 370s bd exhaust brake single 6 in stack custom modded 120 gallon fuel tank in the bed

unburnt fuel=Black..white=water..blue=oil..grey=fuel w/water..water meth usually makes it lighter..how does changing the timing affect how black the smoke is? i would just figure it would change how much black smoke..more or less fuel burned?? -

97dirtydozen's Sig:

97 cummins, goerend trans, ats exhaust manifold, k&n intake, intake manifold, rebuilt pump, 370 marines, #0 plate, 5" turbo back, 16* timing advance, 6" dick cepek, traction bars..autometer pyro boost and trans guages..265,XXX miles STRONG!

to a point its black but if your timing is far enough off itll blow white white is raw fuel it doesnt even smell like smoke if its a little off itll get hot and be grey -

i would say that black is fuel that is not completly burnt,but white is raw unburnt fuel.it'll burn your eyes.and as tater said if it has water in it,it willl have a grey look to it. -