Dodge - Grandcaravan :: 2002 - Blows Black Smoke - 16 Mpg?


Jun 14, 2011

I have a 2002 Dodge Grand Caravan and I am having an issue with it running a touch rich and not getting the gas mileage it should. Here we go, in March the van started to start hard and blow black smoke out of the exhaust. After a 120 mile drive back home, one morning it would not start. I pulled to a mechanic who went out and started it without a problem, he said it was flooded out and probably needed to change plugs and wires. I took it home and changed the wires and plugs. Much to my surprise, no change. The van started hard and then ran really rough with no power for a while and was polluting the air with black smoke. The average mileage was around 12 mpg. I went to the next step and changed the coil pack. No change. Finally took it in and the mechanic changed the O2 sensor and the cat converter. The can runs better but still gets around 16 mpg and still blows a small amount of black smoke. Oh yeah, the air filter is clear and there are no trouble codes either. I am thinking it could be a something with the fuel delivery system maybe?

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Ford 6.0L Power Stroke Diesel :: 2005 F250 Won't Start Just Cranks And Blows Black Smoke

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Things that I've done: Changed fuel filters, Motorcraft (new orings). At first the pump was pumping large bubbles through the line up into the upper fuel filter, but after sitting it appears that it is not pumping bubbles anymore, and I cycled the Key more than 10 times. Did the bubble test while upper filter was removed. Unplugged ICP sensor. Pulled EGR, installed new one. Pulled oil filter and made sure that oil is pumping.

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