Question about 1986 Volvo 760
There is fuel going to the rail, but there is no fuel going into the plugs. Also the injectors are firing. What is the solution to the problem?
At the end of the fuel rail, attached to the front of the engine, is the FUEL PRESSURE REGULATOR. check to make sure that the vacuum hose attached to it is TIGHT. If this regulator is not functioning---replace it.
You may have to do a fuel pressure test to ascertain the correct pump pressure and function of your high pressure undercarriage pump. At lower than OEM pressure, the injectors will not open, even with fuel flowing through the rail.
Posted on Mar 26, 2009
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