Smokes bad when cold
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Yep 5 mths ago to semi synthetic.And i posted 3000km but its more like 4000km I should do a change again.Do I have to use synthetic oil again I heard you should not change back after you switch to synthetic?
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That is when its parked idling.If I drive it warms up and smoke goes away.I have a idle control module but it wont let me idle @ 1200 until it warms up? I agree they are a big motor and need to be run to warm up but the smoke is excessive.
Lead Driver
Joined: Aug 2006
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From: Gambrills
sorry for the delay....
km? where are you from? it doesn't sound like alot of miles ... I dunno if age will deteriorate the anti foaming agents in it or not. Did it smoke before the oil change? If the oil is low/bad it can be a smucker to start specially in the cold.
km? where are you from? it doesn't sound like alot of miles ... I dunno if age will deteriorate the anti foaming agents in it or not. Did it smoke before the oil change? If the oil is low/bad it can be a smucker to start specially in the cold.
Lead Driver
Joined: Aug 2006
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From: Gambrills
Tips - Idea - Hints
Smoke Analysis
White smoke:
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--head gasket or injector well sleeves.
Black smoke:
Caused by excessive fuel for the amount of air drawn into the cylinders. Some black smoke on hard accelerate or at higher altitudes is normal. Excessive black smoke could result from restricted intake or exhaust, inoperative leaking or weak turbo, intake hose(s) leaks, leaking or worn injectors, fuel return or supply restriction, stuck Exhaust Back Pressure Regulator valve or solenoid. Also PCM inputs such as BARO MAP ICP or EBP sensors.
Blue or blue/white smoke:
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, worn or leaking injector o-rings, thermostat stuck open, oil consumption, or plugged crankcase depression regulator valve. Also PCM inputs such as MAP or ICP sensors.
Smoke Analysis
White smoke:
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--head gasket or injector well sleeves.
Black smoke:
Caused by excessive fuel for the amount of air drawn into the cylinders. Some black smoke on hard accelerate or at higher altitudes is normal. Excessive black smoke could result from restricted intake or exhaust, inoperative leaking or weak turbo, intake hose(s) leaks, leaking or worn injectors, fuel return or supply restriction, stuck Exhaust Back Pressure Regulator valve or solenoid. Also PCM inputs such as BARO MAP ICP or EBP sensors.
Blue or blue/white smoke:
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, worn or leaking injector o-rings, thermostat stuck open, oil consumption, or plugged crankcase depression regulator valve. Also PCM inputs such as MAP or ICP sensors.
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The truck is from Southern alberta,Hi winds and dusty and cold as a witches titty in the winter.The truck has original stock air intake system thats sealed good.252000 km.And it smoked before the oil change?I just bought a 1985 f250 4x4 supercab yesturday and it dont smoke at all but it has only 196000km on it,stole it for $600 it was a camper truck used only a couple times a year,rusted bad but mechanicaly sound new clutch,batterys,u joints.
Hotshot
Joined: Dec 2006
Posts: 14,069
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From: Melbourne, Ky
My first guess would be the injector o-rings. That said, should you decide to replace them, with the miles you've got, I would consider replacing the injectors too. I know, it's a big difference in price, but if you pull the injectors, may as well replace them.
Also, switching to synthetic could cause some excessive smoke so I've been told. The additives do a real good job at cleaning the engine which could allow the oil to make it into the combustion chamber. This is temporary though.
My first guess is the o-rings though.
Also, switching to synthetic could cause some excessive smoke so I've been told. The additives do a real good job at cleaning the engine which could allow the oil to make it into the combustion chamber. This is temporary though.
My first guess is the o-rings though.
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Mine has 252000km on it.I know a good garage that I will take it to and get them to check it out.Ya she is stock as far as know.So far from everyones help its narrowed down between 4-5 issues.I just hope it isnt rings.
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