Smoke on hard acceleration
Senior User
Joined: Aug 2012
Posts: 218
Likes: 0
From: Ft. Worth
Smoke Analysis
Smoke analysis
<DL><DT>White smoke: <DD>Caused by unburned fuel passing through the engine. Some white smoke is normal on cold start-ups.
Excessive white smoke could be an indication of inoperative glow plugs, loose injectors, low compression from worn rings or bent connecting rods, or coolant leak into the cylinders. <DT>Black smoke: <DD>Caused by excessive fuel for the amount of air drawn into the cylinders. Some black smoke on hard accel or at higher altitudes is normal.
Excessive black smoke could result from restricted intake or exhaust, inoperative leaking or weak turbo (if equiped), intake manifold gasket leaks (turbo), leaking or worn injectors, fuel return or supply restriction, advanced injecion pump timing or defective injection pump. <DT>Blue or blue/white smoke: <DD>Caused by insufficient fuel or oil consumption. Normal when engine is cold or idling for extended periods.
Excessive smoke could be caused by air in the fuel, contaminated fuel, loose or plugged injectors, thermostat stuck open, oil consumption, plugged crankcase depression regulator valve, retarded injection pump timing, or defective injection pump.</DD></DL>
<DL><DT>White smoke: <DD>Caused by unburned fuel passing through the engine. Some white smoke is normal on cold start-ups.
Excessive white smoke could be an indication of inoperative glow plugs, loose injectors, low compression from worn rings or bent connecting rods, or coolant leak into the cylinders. <DT>Black smoke: <DD>Caused by excessive fuel for the amount of air drawn into the cylinders. Some black smoke on hard accel or at higher altitudes is normal.
Excessive black smoke could result from restricted intake or exhaust, inoperative leaking or weak turbo (if equiped), intake manifold gasket leaks (turbo), leaking or worn injectors, fuel return or supply restriction, advanced injecion pump timing or defective injection pump. <DT>Blue or blue/white smoke: <DD>Caused by insufficient fuel or oil consumption. Normal when engine is cold or idling for extended periods.
Excessive smoke could be caused by air in the fuel, contaminated fuel, loose or plugged injectors, thermostat stuck open, oil consumption, plugged crankcase depression regulator valve, retarded injection pump timing, or defective injection pump.</DD></DL>
Postmaster
Joined: Nov 2008
Posts: 2,851
Likes: 3
From: Buckley, WA
had to LOL at this
here is what the smoke looked like before my IP and injectors got replaced. it cleared it all up.....well except for some black smoke now
91 ford idi diesel straight pipe - YouTube
Postmaster
Joined: Nov 2008
Posts: 2,851
Likes: 3
From: Buckley, WA
start cheap tho, fill fuel filter with ATF let sit in IP over night, advance timing a bit then try it...saved me some coin with the 93 (had same symptoms, but much more blue/white smoke while driving)
Thread Starter
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Senior User
Joined: Feb 2011
Posts: 143
Likes: 0
I'm still a little confused on the timing advancing. Losen the 3 bolts and turn a center bolt 1/16'' at a time? I wish I could find a good video on this. It seems I can only fine the fuel screw videos. Im sure if I could do that suspension lift kit and steering gear box by myself I should be able to do this >.>
Postmaster
Joined: Nov 2008
Posts: 2,851
Likes: 3
From: Buckley, WA
3 9/16" nuts that hold IP on, loosen those (kinda a PITA with a regular wrench, but doable) then there should be a 3/4" tab on the IP that you can use a wrench to adjust it (advance towards passenger side) then tighten it back up. pretty easy
Thread Starter
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Senior User
Joined: Feb 2011
Posts: 143
Likes: 0
So the 3 nuts on the back that are out in the open to be loosened. Where is the tab on the IP and how much should be adjusted at a time?
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