Cold start concerns
My 92 dodge cummins will start in the cold but it dumps out blue smoke and the emgine sounds rough and rocks back and forth for the forst few mins then quits is this normal? Also while the trucks smokon bad i can turn it off and back on amd the smoke isnt nearly as bad, it doesnt smoke blue at alp when im moving
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Nope, ain't normal. When you start it, it should say running. If its cold, plug it in to keep it warm. Diesels fire off combustion pressure and heat. A cold diesel runs rough. It shou ld smooth out after about 35 seconds or so....and ready to roll in a few minutes when enough residual heat is in the motor.
Now, if your saying it smokes and then clears up, yes, normal. We need some more info. Is your pump turned up? How many miles the motor got on it? How long do you warn it up for? You start it cold in cold weather or do you have her plugged in? Does she put out a light blue haze while she's idling after she gets up to operating temp? All these things will have a basis on our answers.... |
Thats not what i meant the engine doesnt quit the rough smoke and idle quits the truck stays running and it has a turned up pump and 250ooo kms
---AutoMerged DoublePost--- I want to know hpw much blue smoke should there be and how rough is thw idle normally ---AutoMerged DoublePost--- like my truck pours a blue and white smoke like a major amount untill it starts to warm up im just concerned about the amount of smoke it literatly makes a cloud |
Maybe it's getting a little bit of air in the fuel but if there really cold they will run rough. Also are your grid heaters working or do you let the wait to start light go out then fire it up? Your in Canada I see where abouts? Mine runs rough for a few seconds n I gotta sometimes feather the throttle but it's more a p-pump thing. But where i'm at I can't plug it in.
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Im in slave lake alberta and i always wait for the grid hearter light and im not sure if its working how would i check?
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Well, you should turn on your key, you should be able to count to 5 slowly....Thousand1, Thousand2......so on, then you should hear a thud on your drives side fender, ( Heater relays), then you should start it.
Hook up a multi-tester to your grid heaters. When its cold they should have power once the ignition is on. Then after the thud, should have no voltage. If you do have voltage, place your hand by the intake horn. This area will get hot fast, be warned. Have someone cycle the switch, move your hand before it gets too hot. If its hot, your heaters are working. If not, and you have voltage, your heaters have taken a dump. If no voltage, go back to your heater relay. Make sure its getting voltage when you turn the key on. If there is no voltage coming out when its cold, the relay is bad..... ---AutoMerged DoublePost--- When its really really cold here, I cycle my ign. switch 2 or 3 times to give it some warmth before startup.... |
If its pluggin it will the grid heater still cycle
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Originally Posted by 1stgencumminsdenis
(Post 980313)
If its pluggin it will the grid heater still cycle
yes |
like my truck pours a blue and white smoke like a major amount untill it starts to warm up im just concerned about the amount of smoke it literatly makes a cloud
1989 - 1993 Dodge Diesel Diagnostics on PDF Cold Advance Operation; The KSB unit on the injection pump uses a temperature sensor in the intake manifold to advance the pump to engine timing when the engine is cold, which reduces blue/white smoke.
Slow to shut off
Miss/Rough run
Smoke, Blue/White
Smoke, Black
Supply Pump
Turbocharger
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