[diesel_mercedes] Two Problems. Air in the lines & bad tank sender.

 

I have a TD(Touring Diesel) I felt around the output of the tank and can't feel
any bolts for a tank filter/screen. Took off the fuel line and not a drip. Out
of fuel with indicating half a tank. There is a big Allen bolt on the bottom of
the tank. What is that for. I'm assuming I have to tear out part of the back
of the wagon to access the sender.

Next problem. I see foaming fuel and air in the line to the injector. I also
see foaming fuel in the filter. I recently put new o rings on the secondary
fuel filter shaft. Is there a torque rating for this bolt? I had a loose banjo
bolt on top of the filter that caused trouble. Fixed. I have new return lines
but I notice shiny fluid on the #1 injector. The return lines are clean with no
fuel on them. Can an injector leak air? I'm on return & the system won't purge
the air fast enough for the car to run smooth. I do run veggie oil and use a
looped system. I switched to return to purge air but it's not happening fast
enough for the car to run smooth. I guess I could put the system under pressure
somehow and see the leak. Maybe I'll take a bicycle inner tube apart and make a
way to use compressed air to do it. Lawrence Rhodes..

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