Bad smoking and missing in engine
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Bad smoking and missing in engine
Hello i got a 93 7.3 and driving it down the road it started acting like it had a miss in the engine got home and noticed that it is smoking quite a bit more than it usally does. I smelled the exhast and dont smell sweet or like antifreeze so i dont think its a head gasket problem. Im wondering if i have a injecter pump or injecter problem any input would really help me out. THANKS.
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It was 30deg. outside,I filled the fuel at the end of last week it ran fine until now. The ip has about 20 or 30,000 miles on it, I am unsure about the injectors. I dont use any fuel treatment. Is there anyway to test the ip and the injectors?
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
They need to be tested at a diesel injection service.
Actually you can buils a testor for the injectors, but special equipment to test the IP.
I would start with a heavy dose of Diesel Kleen.
Change the fuel filter and fill teh new one with Diesel Kleen.
Then split another bottle between the tanks and drive it for a while.
30 degrees is cold enough for wax crystals to form in the fuel system.
Actually you can buils a testor for the injectors, but special equipment to test the IP.
I would start with a heavy dose of Diesel Kleen.
Change the fuel filter and fill teh new one with Diesel Kleen.
Then split another bottle between the tanks and drive it for a while.
30 degrees is cold enough for wax crystals to form in the fuel system.
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Were can you get some diesel kleen at not sure if i have herd of that before. If change the filter and refill it will it still have a bunch of air to bleed out if so how do you get the air out? Also what are wax crystals you are taling about?
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
Diesel Kleen is available at Wal Mart and most auto parts stores.
When you refill the filter, you should get rid of most of the air.
The engine should start just fine, keep the RPM up a little and it should be able to take care of the rest of the air.
Diesel fuel contains paraffin wax.
When temps drop, the wax crystals form in the fuel and can stop up the fuel filter and lines.
Gelling fuel is the term that describes this.
To combat gelling, as weather gets colder oil companies start blending #1 diesel with #2 to lower the gel point.
But every once in a while, temps get colder faster than normal or much colder than normal, and the fuel is not blended correctly for the actual temp.
The result is gelled diesel fuel, and trucks sitting everywhere with wax stopping up the fuel systems.
I was bitten by this back in the 80's while driving cross country in a semi.
Big cold front dropped the temps in Kansas well below normal weeks before it should have been that cold.
With 200 gallon fuel tanks, the paraffin looked like icebergs in the fuel tanks.
When you refill the filter, you should get rid of most of the air.
The engine should start just fine, keep the RPM up a little and it should be able to take care of the rest of the air.
Diesel fuel contains paraffin wax.
When temps drop, the wax crystals form in the fuel and can stop up the fuel filter and lines.
Gelling fuel is the term that describes this.
To combat gelling, as weather gets colder oil companies start blending #1 diesel with #2 to lower the gel point.
But every once in a while, temps get colder faster than normal or much colder than normal, and the fuel is not blended correctly for the actual temp.
The result is gelled diesel fuel, and trucks sitting everywhere with wax stopping up the fuel systems.
I was bitten by this back in the 80's while driving cross country in a semi.
Big cold front dropped the temps in Kansas well below normal weeks before it should have been that cold.
With 200 gallon fuel tanks, the paraffin looked like icebergs in the fuel tanks.
Cargo Master
Joined: Feb 2008
Posts: 3,409
Likes: 1
From: back in SE Iowa
is it true that oil companies add anti gel to the fuel in the winter.i heard that here a while back and was curious about that
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Ok i was driving today at about 55 mph and started missing again and everytime it had a miss it puff out smoke from the exhaust you could also accelerate and let let off and it would smoke like crazy. Could this be a injector problem or somthing else.
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