Attention: TDR Forum Junkies I could not for the life of me figure out why my gas mileage went to crap-in-a-handbasket. Yes, I had put on larger tires (one size larger) and still have not recalibrated, but 100 miles less a tank? Then I noticed a small puddle of what I thought was sludge under the truck. It is right next to the crank case breather tube. When I got down to inspect it I realized it was fuel, and it was everywhere.
I cranked up the engine and had my son rev it to 2K and watched under the wheel well with a flashlight. It was coming from the fuel rail. It was not a fast gush like I would expect but a steady drip. It turned out to be the coupling behind the nipple that connects the brass fuel line on injector 6. We had to take off the fuel line to injector 6, then take off the nipple, then take off the coupling and clean it off. We put it all back together and no leak!. I had no idea junk could get pushed into the threads to the point of causing a leak, but based on the pressures it is not all that surprising. I immediately got 4 MPG better fuel economy. Thank goodness. After the money I spent on upgrades my wife was ready to kill me because of the LOST mileage.
If anyone out there knows of other fuel system gotchas please post and let me know about them.
gnjsmall
2005 2500 4X4: Banks scoop, cool air, ATS Arc Air, monster exhaust, MBRP cat, ATS transmission 105K miles
I cranked up the engine and had my son rev it to 2K and watched under the wheel well with a flashlight. It was coming from the fuel rail. It was not a fast gush like I would expect but a steady drip. It turned out to be the coupling behind the nipple that connects the brass fuel line on injector 6. We had to take off the fuel line to injector 6, then take off the nipple, then take off the coupling and clean it off. We put it all back together and no leak!. I had no idea junk could get pushed into the threads to the point of causing a leak, but based on the pressures it is not all that surprising. I immediately got 4 MPG better fuel economy. Thank goodness. After the money I spent on upgrades my wife was ready to kill me because of the LOST mileage.
If anyone out there knows of other fuel system gotchas please post and let me know about them.
gnjsmall
2005 2500 4X4: Banks scoop, cool air, ATS Arc Air, monster exhaust, MBRP cat, ATS transmission 105K miles
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