Fuel

Jo · Unread post by Jo » 29 May 2005, 18:00

My 1.9TD starts straight away with a full tank, but then takes increasingly longer as the fuel level decreases. The system is obviously de-pressuring as the amount of the diesel lowers. Any ideas?

dnsey · Unread post by **dnsey** » 29 May 2005, 18:52

Blocked vent pulling down a vacuum?

Unread post by **Peter.N.** » 29 May 2005, 19:28

Air leak in fuel supply circuit, fuel filter needs changing or as above.

JohnT · Unread post by **JohnT** » 29 May 2005, 23:00

For a vacuum problem in the tank, as with a blocked vent, you should hear a suction noise when removing the filler cap after a long journey or when you experience this problem when re filling the tank.

Jo · Unread post by Jo » 02 Jun 2005, 16:28

Thanks for the advice. As there is no sound of air filling a vacuum when re-filling the tank and no apparent leaks, could it be a faulty valve (assuming there is one) in the hand primer pump, causing the fuel, after reaching a certain level, to return to the tank?

RobL · Unread post by **RobL** » 02 Jun 2005, 18:13

Hi Jo, I'm a new member like yourself (First post after a month of lurking and learning A HELL OF A LOT-thanks guys)
I have just got a second Xantia 1.9TD and it had a similar problem, sometimes it took well over 45s to start, even when hot. It turned out to be the clip missing from the pipe on the feed side of the hand pump - allowing air to get in which means all the fuel in the pipe runs back into the tank. Just a thought.