Fuel tank rollover valve
The FSM shows it as non servicable - but then again they say the same about balljoints and control arm bushings. I think I am going to try to drop the tank this weekend and see if I can find out for sure if there is a leak. Maybe some epoxy around the area? Kind of nervous about junkyard tanks - they could have issues too. But the more I think about what's going on with my truck - the more this seems to be my issue.
- Fuel Pressure drop after sitting for a while
- Evap leak
- Low mpg
- Fuel Pressure drop after sitting for a while
- Evap leak
- Low mpg
According to the FSM the fuel pressure drop to 0 is normal on a cold vehicle. Once you turn the key the system pressurizes.
The evap leak, could be cracked lines.
Low MPG, any codes? How are your 02 sensors? How many miles?
I am thinking that if there is a leak with the gas tank that it may be the pump may be sucking air when it is sending fuel to the injectors
I have replaced just about every hose on the evap system
I am getting about 10mpg - O2 sensors are both new.
110,000 miles
I have replaced just about every hose on the evap system
I am getting about 10mpg - O2 sensors are both new.
110,000 miles
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P0456 small evap leak
Also, I forgot to mention I have a strong gas smell in the tank area
Also, I forgot to mention I have a strong gas smell in the tank area
I have the 456 code. I have for 2 years now. I know on the older dakotas you could remove the roll over valve. Im sure you can on these too. Worst thats gonna happen is your gonna break it. I dont know if you take the fuel pump out can you reach it? That might help you in removing it.







