black smoke?
- Thread starter NecroWolf
- Start date
Maxtor
New member
Re: black smoke?
Black smoke = rich. Do you have the stock FPR? You need to verify what fuel pressure you are running off the Schrader valve on the fuel rail. It has been a long time, but I think stock fuel pressure (static) is high 30's low 40's. Not sure what the Pitbull chip recommends.
What do your plugs look like? Do you have one or more that look really black? Do you have Datamaster? What are your O2 levels at WOT?
Black smoke = rich. Do you have the stock FPR? You need to verify what fuel pressure you are running off the Schrader valve on the fuel rail. It has been a long time, but I think stock fuel pressure (static) is high 30's low 40's. Not sure what the Pitbull chip recommends.
What do your plugs look like? Do you have one or more that look really black? Do you have Datamaster? What are your O2 levels at WOT?
QUICK STORM
B.A.M.F. BMW Tech
Re: black smoke?
you can test for a stuck open injector by pulling all your plugs and checking to see which one is fouled the most. or to test the entire fuel system, throw a fuel pressure gauge on the rail and check for loss of pressure. only things that hold psi in the fuel system are injectors, FPR, and fuel pump check valve. i would assume if fuel pressure is lost after shutting off the key, there would be a leak somewhere.
i suggest you go to an adjustable FPR. hope this helps.
you can test for a stuck open injector by pulling all your plugs and checking to see which one is fouled the most. or to test the entire fuel system, throw a fuel pressure gauge on the rail and check for loss of pressure. only things that hold psi in the fuel system are injectors, FPR, and fuel pump check valve. i would assume if fuel pressure is lost after shutting off the key, there would be a leak somewhere.
i suggest you go to an adjustable FPR. hope this helps.
QUICK STORM
B.A.M.F. BMW Tech
Re: black smoke?
you can also pull all the injectors out and check for flow with pressurized air and a bucket of water, this also requires pulling the fuel rail out too in case your confused.
you can also pull all the injectors out and check for flow with pressurized air and a bucket of water, this also requires pulling the fuel rail out too in case your confused.
NecroWolf
lost marbles member
Re: black smoke?
must be the drugs. hadn't thought of that one. i'm pretty sure i'm losing fuel pressure, if the truck sits long it takes a bit to crank up and puffs quite a bit of smoke on start up everytime, and it's too much to be valve seals, unless i don't have any valve seals
TyphoonB said:
must be the drugs. hadn't thought of that one. i'm pretty sure i'm losing fuel pressure, if the truck sits long it takes a bit to crank up and puffs quite a bit of smoke on start up everytime, and it's too much to be valve seals, unless i don't have any valve seals
'JustDreamin'
Dream: 6LV8 Turbo Bravada
Re: black smoke?
What color is the smoke on startup? White / blueish smoke on startup would be oil smoke (from valve seals or maybe piston rings). Black smoke is a pig rich condition.
'Dreamin'
What color is the smoke on startup? White / blueish smoke on startup would be oil smoke (from valve seals or maybe piston rings). Black smoke is a pig rich condition.
'Dreamin'
Flyin Ryan
hated cuz he drives fords
Re: black smoke?
Pitbull chips have been known to be overly rich to be on the safer side of things
Pitbull chips have been known to be overly rich to be on the safer side of things
'JustDreamin'
Dream: 6LV8 Turbo Bravada
Re: black smoke?
Bluish white is oil smoke. Yes, worn valve guides can cause that too....Along with a few other things, including PCV system malfunctioning and pulling oil into the intake (but valve guides & seals is the classic reason).
Straight white smoke is often water / antifreeze smoke, typically caused by cracks, bad gaskets, or the like. Doesn't sound like that's the case for you (luckily)
'Dreamin'
Bluish white is oil smoke. Yes, worn valve guides can cause that too....Along with a few other things, including PCV system malfunctioning and pulling oil into the intake (but valve guides & seals is the classic reason).
Straight white smoke is often water / antifreeze smoke, typically caused by cracks, bad gaskets, or the like. Doesn't sound like that's the case for you (luckily)
'Dreamin'
HotRudyRod
New member
Re: black smoke?
Nah it might no be the drugs, lol. I had the same problem, it was the turbo's shaft seals. I would start the truck and get a bigass white cloud and then whe i would mash the gas i could see a big black cloud and after a while of drivin my tail gate would be covered with dust (baked oil). Once i got a new turbo it was all gone.
NecroWolf said:
Nah it might no be the drugs, lol. I had the same problem, it was the turbo's shaft seals. I would start the truck and get a bigass white cloud and then whe i would mash the gas i could see a big black cloud and after a while of drivin my tail gate would be covered with dust (baked oil). Once i got a new turbo it was all gone.