Fuel return line, Help
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1arrowdown (08-29-2014)
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Hey Chris, that's not so! You been misinformed! Unlike some other cars, the X Type 2.0, 2.5 and 3.0 liter petrol versions don't have a fuel return line. Jaguar describe the system as follows
The electronic returnless fuel system utilized has the following advantages:
reduced fuel tank vapor.
requires less electrical power.
does not require a fuel return line.
The intelligence of this system is contained within the engine control module (ECM). The ECM determines the required fuel flow and communicates this information to the fuel pump controller. The fuel pump controller has the fuel pump driver functions fully integrated into the microprocessor. The ECM calculates the frequency and determines the current required by the fuel pump to maintain the correct fuel pressure at the fuel injectors.The fuel tank is of a saddle design which incorporates two sender units. The right-hand side houses the fuel pump module. The left-hand side houses the transfer pump module.
The electronic returnless fuel system utilized has the following advantages:
reduced fuel tank vapor.
requires less electrical power.
does not require a fuel return line.
The intelligence of this system is contained within the engine control module (ECM). The ECM determines the required fuel flow and communicates this information to the fuel pump controller. The fuel pump controller has the fuel pump driver functions fully integrated into the microprocessor. The ECM calculates the frequency and determines the current required by the fuel pump to maintain the correct fuel pressure at the fuel injectors.The fuel tank is of a saddle design which incorporates two sender units. The right-hand side houses the fuel pump module. The left-hand side houses the transfer pump module.
Last edited by astromorg; 08-29-2014 at 03:49 PM.
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1arrowdown (08-30-2014)
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Rodney, which manual are you using? JTIS - the Jaguar publication - is very clear in its pictures and descriptions for all model years of petrol engines that there is a single supply line leading to the fuel filter and the pressure is controlled electronically by the ECU modulating the power to the fuel pump. I changed the fuel filter on my X Type a couple of weeks ago and can confirm there is no T piece before or after it.
There are other pipes from the fuel tank associated with the evaporative emission control system
There are other pipes from the fuel tank associated with the evaporative emission control system
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