The problem is when in HOT conditions and I am in 4wd on a trail the fuel starts “percolating” and then I need to basically loosen the fuel line and pump the fuel out of the line until it starts flowing smooth. When I release the fuel line then the fuel sprays out of the fuel rail. Extremely dangerous I know but don’t know of any other solution out in the bush. I have also previously removed the return line from the fuel rail and turned the vehicle on but NO fuel comes out.
A: Now I have been told that the fuel pump is the problem. Not enough fuel pumping through per hour and pressure too little. It is a Siemens internal pump.
B: I have also been told that the pump is perfect but that the fuel pressure regulator is the problem. It is not opening so the fuel does not return to the tank thus putting strain on the pump and fuel in the line starts percolating.
What say you?
I need to sort this out by next week and don't want to change both regulator and pump if not necessary. Please help.
![Beg :beg:](./images/smilies/beg.gif)