Question---SMOKE

[shorty]

When I am cursing at 60 to 70 mph and floorboard it black smoke comes from the exhaust. The truck does not use a drop of oil and changed every 3-4K miles. Plugs have 50K and no fouling. Wondering if the mixture is a little rich. :dontknow: Runs fine and no problems just smoke. Big puff then a little till I back off the gas. Any help would be appreciated.

 

[SRT2SLOW]

It's way rich.

 

[tdamon30]

I would say that's normal. Or at least mine did that when it was an automatic.

 

[VENOMOUS1 RACING]

WOT is safe rich which can be tuned leaner. We'll wideband it next time to see where she's at Shorty. It would ONLY be at WOT, the other 99% of your driving is 14.7:1 stoich

 

[VENOMOUS1 RACING]

When I am cursing at 60 to 70 mph and floorboard it black smoke comes from the exhaust. The truck does not use a drop of oil and changed every 3-4K miles. Plugs have 50K and no fouling. Wondering if the mixture is a little rich. :dontknow: Runs fine and no problems just smoke. Big puff then a little till I back off the gas. Any help would be appreciated.

Prolly wouldn't do if you weren't cursing at 60-70mph? :dontknow:

 

[shorty]

Prolly wouldn't do if you weren't cursing at 60-70mph? :dontknow:

Hmm, will try it at other speeds. Just she don't like slower than 70. :dontknow:

 

[500H V10]

When I am cursing at 60 to 70 mph and floorboard it black smoke comes from the exhaust. The truck does not use a drop of oil and changed every 3-4K miles. Plugs have 50K and no fouling. Wondering if the mixture is a little rich. :dontknow: Runs fine and no problems just smoke. Big puff then a little till I back off the gas. Any help would be appreciated.

Black Smoke is Fuel.
Gray/Blue Smoke is Oil.

 

[10-1=9]

10 cylinders, 505 cubic inch, 3" exh (no cats?), wide open air intake, performance tune & some piston carbon from all the times you weren't beating it = yea, you will get some stuff out the exhaust! Checking the tune on a dyno would be first on my list.

 

[10-1=9]

After looking at the carbon on my old pistons I will be useing fuel injection cleaner religiously from now on.

 

[NVR2OLD]

I would say that's normal. Or at least mine did that when it was an automatic.

It's not normal for a RC or QC. Running to rich will ruin the O2 senor's.

 

[ZCx]

After looking at the carbon on my old pistons I will be useing fuel injection cleaner religiously from now on.

Amsoil fuel inj./fuel system is the best IMVHO:rock:

 

[Slitherbeast]

Is it throwing any error codes? Seem it should if it is that rich

 

[shorty]

Is it throwing any error codes? Seem it should if it is that rich

No sir, no codes at all. Will try at different speeds is a day of so. It is gray so must be fuel. Relief.

 

[VENOMOUS1 RACING]

Guys it's nowhere near the extreme situation it sounds. Not plug fouling type situation. That would be and Idle/cruise type richness which he has no issue. He sees a light plume of black/grey ish smoke at WOT which indicates a slightly rich Mixture in that area of load.

 

[amtrucker22]

My last truck would blow some smoke. This was at roughly 60k miles.

Dodge Ram SRT-10 Viper Truck Dyno - YouTube

 

[10-1=9]

My old motor did the same thing all the time @ WOT

 

[shorty]

Guys it's nowhere near the extreme situation it sounds. Not plug fouling type situation. That would be and Idle/cruise type richness which he has no issue. He sees a light plume of black/grey ish smoke at WOT which indicates a slightly rich Mixture in that area of load.

Do I understand you to say that it is tuned for my type of driving and a little rich at WOT, which is not that often? Leaning down for no smoke at WOT may make is a little lean for my every day driving?

Sounds like I need to keep it where it is and leave a little soot on the windshield of the guys I blow by on the passes.

 

[Slitherbeast]

Do I understand you to say that it is tuned for my type of driving and a little rich at WOT, which is not that often? Leaning down for no smoke at WOT may make is a little lean for my every day driving?

Sounds like I need to keep it where it is and leave a little soot on the windshield of the guys I blow by on the passes.

Sounds like fun!!! especially for the convertible mustangs!!