Priming Diesel Pump

[csj]

hello follow up on my car . finally got engine to turn over on key immobiliser problem . next question is how do i prime the pump {99 tdi } been stood a long time while puting engine in . turn over but no fuel can be seen in clear pipe . does just cranking it over prime the lines and pump ......?

[chrispb123456]

Hi

in theory it should do but in practice rarely, with the aid of hand primer pump or an old lift pump which you can temporarily place in the feed pipe from the tank to the fuel filter.

That will allow you to pump diesel from the tank through the filter and the injection pump.

[csj]

thanks for reply . any idea where to get one from dont wanna spend a lot of money

[chrispb123456]

hi again

the hand primer that should be easily available from a scrappy would be from a p reg peugeot 306 1.9 diesel or citroen zx 1.9 diesel or any old mechanical lift pump.

You may have to get some tubing to adapt the hand primer to fit your car, but once you have got it you will find it very usefull when you change fuel filter, saves all the endless cranking of the starter, have ignition on when priming this will ensure stop solenoid is in run position.

[csj]

thanks will have a go tomorrow . fingers crossed

[csj]

hello again . put lift prime pump on car and got the car to run but had to use the pump to prime the diesel into the engine pump , why will it not draw diesel from the filter on its own without the need for help ? with the prime pump i can get fuel from tank to filter . filter to car but not through the diesel pump . really baffling me know . help me please . if had hair id be pulling it out

[chrispb123456]

Hi again

Could be drawing in air, check pipe connections on filter and inlet connection on injection pump, you could try temporarily bypassing the fuel filter, also can you feel the injection pump sucking if you disconnect inlet pipe and put a finger on the pump connection while someone cranks engine?

[csj]

Hi again

Could be drawing in air, check pipe connections on filter and inlet connection on injection pump, you could try temporarily bypassing the fuel filter, also can you feel the injection pump sucking if you disconnect inlet pipe and put a finger on the pump connection while someone cranks engine?

will have a look tom . injector pipe weeps a bit of diesel , is there supposed to be a seal on top? [pipe that sits on top of injector }