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Old 10-12-2006, 02:50 PM
wabenze wabenze is offline
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Join Date: Aug 2000
Posts: 67
Thank you all for your help. I replaced all the delivery valve seals. The fuel leak has stopped. The car starts and runs well.

When I switch off the car, almost instantly I see the fuel in the line from the fuel heater to the pre-filter bieng displaced by air. Also, during idle, I find air bubbles in the line from the fuel shut off valve to the lift pump. This get worse during high RPM.

1. Is the above situation normal?
2. Where and how do I look for the air leak? All the O-rings have been replaced (new).
3. I cannot locate the restricter which is supposed to be located in the return line near the fuel filter housing.

Note - the car has not been driven on less than 1/2 tank of diesel since these issues have been identified.

Please help
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