Black Smoke at idle and nailing the gas
- Thread starter Matto
- Start date
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know your smoke colors
Sometimes its hard to tell, but make sure you know your smoke colors.
Blue smoke is indicative of burning oil. This could be due to a leaky turbo, or leaky valve seals or even bad pistons rings. In ICed GNs blue smoke is common because of the oil getting into the intercooler due to the crankcase vent tube on the passenger side valve cover.
White smoke is usually just condensation in the pipes burning off, or it means you're running really clean. But it could also mean your burning up your coolant due to a bad headgasket.
Black smoke means your using too much fuel for one reason or another. I noticed you said you have a walbro 340 and a adj fuel pressure regulator. what FP are you running at idle? until you have a scantool or at least a FP guage, id reccomend using the stock bosch regulator or the bosch 237 regulator, becuase they give u a fixed rate, while with the adjustable one, you just have to play it by ear.
i hope this was useful. And if you already knew this, maybe it will help someone else!
Sometimes its hard to tell, but make sure you know your smoke colors.
Blue smoke is indicative of burning oil. This could be due to a leaky turbo, or leaky valve seals or even bad pistons rings. In ICed GNs blue smoke is common because of the oil getting into the intercooler due to the crankcase vent tube on the passenger side valve cover.
White smoke is usually just condensation in the pipes burning off, or it means you're running really clean. But it could also mean your burning up your coolant due to a bad headgasket.
Black smoke means your using too much fuel for one reason or another. I noticed you said you have a walbro 340 and a adj fuel pressure regulator. what FP are you running at idle? until you have a scantool or at least a FP guage, id reccomend using the stock bosch regulator or the bosch 237 regulator, becuase they give u a fixed rate, while with the adjustable one, you just have to play it by ear.
i hope this was useful. And if you already knew this, maybe it will help someone else!
Well, I was messing with ECMs when it got where it is now, the exhaust pipe has always been black as if running rich.
Will the computer have to readjust?? my MAF sensor is very loud now, it used to flutter and then go away, but now it constantly hisses.
Any help would be appreciated
Matt Wenning
Will the computer have to readjust?? my MAF sensor is very loud now, it used to flutter and then go away, but now it constantly hisses.
Any help would be appreciated
Matt Wenning
I cleaned my throttle body up, hoping that it would help, but now it is idleing high, damn cant win.
Will I need a chip for it to read correctly??, just having problems and stuff.
P.S. does the 87 MAF use the same plug as the 85 MAF, it fit so I plugged it in, but I dont know if its reading correctly
Will I need a chip for it to read correctly??, just having problems and stuff.
P.S. does the 87 MAF use the same plug as the 85 MAF, it fit so I plugged it in, but I dont know if its reading correctly
dont use an 87 MAf unless you have an 87 ECM. And you have a chip, its just the stock chip I'm sure. lower the fp, and it should stop smoking, but dont lower it enough to where you lose power. When does it blow smoke? when you get on it? or when you start it? or all the time?
