No fuel to injectors with manual priming pump

[nextural]

Hi all,

Got a 2001 Mk6, 2.4 litre, TDDI which is suffering from a lack of fuel.

I'm not getting fuel to my injectors even with a manual priming pump and manually cranking it, It's as if the fuel can't get beyond the pump.

When manually turning the crank with a wrench and pumping with a manual priming pump I don't get any fuel to the injectors. I've tried pumping directly into the fuel pump inlet pipe and I know there's no air in the system because the pump bulb goes hard. As per Haynes manual, I've tried turning the crank 180 degrees, and in 5 degree increments, but at no point does fuel come out of the injectors like the manual says it should.

Strangely, when turning the engine with the key I get fuel to injector 1 only.

Any ideas?

Engine was running fine on idle but cutting out under load - fuel supply issue.
Changed the injectors but no difference.
Found the tank inlet on the fuel filter head was blocked so replaced the fuel filter head and fuel filter.
Using a manual priming pump I get fuel running fine from the tank, through the filter and to the pump but it doesn't seem to get any further.

Cheers,

Michael

[v8dave]

There are two different pumps on these depending on power output.

VP30 and VP44

Worth checking which you've got.

Does seem like it might be a mechanical failure in the pump from what you've described.
Remove the round access plate on the timing cover and check whether the timing chain is turning the pump.
Even if it turns at the drive end they can break internally so that the distribution section stops.

[karl]

if its a vp44 pump the advanced piston is stuck

from fuel contamination