T4 westy

[Richard McCann]

Hi all new to the group
I have just brought a 1991 t4 westfalia as a project to do up and keep but I'm a bit stumped on a few things could anyone help me please

 

[sidepod]

Hi all new to the group
I have just brought a 1991 t4 westfalia as a project to do up and keep but I'm a bit stumped on a few things could anyone help me please

What would you like to know?

 

[Richard McCann]

What would you like to know?

Hi my t4 will start when I connect an electric pump going from a Jerry can to the injector pump and sounds okay when I do so , but if I disconnect the electric pump and connect it to the filter ( new one filter , comes straight from the tank then ) she will eventually splutter and stop ,
Would you have any suggestions ??
Is their some sort off vacuum pump anywhere that will pull the fuel through to the injector pump or is the pump needing a rebuild

 

[2into1]

Sidepod and a couple of others will no doubt try and help you with mechanical issues, but this forum is better on the camping equipment side. Vwt4forum might be worth an ask too.

 

[WelshGas]

Hi my t4 will start when I connect an electric pump going from a Jerry can to the injector pump and sounds okay when I do so , but if I disconnect the electric pump and connect it to the filter ( new one filter , comes straight from the tank then ) she will eventually splutter and stop ,
Would you have any suggestions ??
Is their some sort off vacuum pump anywhere that will pull the fuel through to the injector pump or is the pump needing a rebuild

There are 2 fuel pumps.
Low pressure pump in fuel tank and the Injection pump in the engine bay.

Do a T4 2.5 TDI have an electronic fuel pump to feed the injection pump ?

Hi all Do a VW transporter T4 2.5 TDI have an electronic fuel pump to feed the injection pump ? And If yes is it placed in the tank or where ?? Regards Ole

www.vwaudiforum.co.uk

 

[sidepod]

Yeah sounds like the lift pump is not working. Could be the pump itself or the power to it. Not something I’ve ever looked at but it should be pretty straightforward.

 

[Richard McCann]

There are 2 fuel pumps.
Low pressure pump in fuel tank and the Injection pump in the engine bay.

Do a T4 2.5 TDI have an electronic fuel pump to feed the injection pump ?

Hi all Do a VW transporter T4 2.5 TDI have an electronic fuel pump to feed the injection pump ? And If yes is it placed in the tank or where ?? Regards Ole

www.vwaudiforum.co.uk

It's 1991 my westy is looked at sender unit in tank and no wires for a pump

Yeah sounds like the lift pump is not working. Could be the pump itself or the power to it. Not something I’ve ever looked at but it should be pretty straightforward.

 

[Richard McCann]

Hi guys this is couple pictures of the sender unit in the tank their are only 2 wires which are for the sender itself , no additional wires for a pump of any sort but what is confusing me is that I can physically pump it up and down I tried to upload a video but I can't find it lol

 

[WelshGas]

Hi guys this is couple pictures of the sender unit in the tank their are only 2 wires which are for the sender itself , no additional wires for a pump of any sort but what is confusing me is that I can physically pump it up and down I tried to upload a video but I can't find it lol

I don't have a T4 so unable to help further. You might get more info on the T4 Forum.

New Posts

www.vwt4forum.co.uk

 

[Richard McCann]

What would you like to know?

What would you like to know?

Hi my t4 will start when I connect an electric pump going from a Jerry can to the injector pump and sounds okay when I do so , but if I disconnect the electric pump and connect it to the filter ( new one filter , comes straight from the tank then ) she will eventually splutter and stop ,

 

[sidepod]

I’ve just had a wander through the Bently official VW service manual for this MY and I can’t see a lift pump anywhere. Nothing in the tank assy or wiring scheme. This suggests the HP injector pump pulls vacuum on the tank via the filter?

So I guess it’s just a case of working through the system. Remove the fuel lines between tank and filter and blow through to make sure they’re clean.

Fit a new filter and T piece on top of the filter.

Make sure the tank vent pipe is clear. You may have an airlock?